jro_apps/redmine Commit - r13614:37aa01674039

Added Issue#attributes_editable?...

Jean-Philippe Lang -

r13614:37aa01674039

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r13614:37aa01674039

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app/controllers/issues_controller.rb 0 -2

              # Redmine - project management software
              # Copyright (C) 2006-2015  Jean-Philippe Lang
              #
              # This program is free software; you can redistribute it and/or
              # modify it under the terms of the GNU General Public License
              # as published by the Free Software Foundation; either version 2
              # of the License, or (at your option) any later version.
              #
              # This program is distributed in the hope that it will be useful,
              # but WITHOUT ANY WARRANTY; without even the implied warranty of
              # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
              # GNU General Public License for more details.
              #
              # You should have received a copy of the GNU General Public License
              # along with this program; if not, write to the Free Software
              # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
              class IssuesController < ApplicationController
                menu_item :new_issue, :only => [:new, :create]
                default_search_scope :issues
                before_filter :find_issue, :only => [:show, :edit, :update]
                before_filter :find_issues, :only => [:bulk_edit, :bulk_update, :destroy]
                before_filter :find_project, :only => [:new, :create, :update_form]
                before_filter :authorize, :except => [:index]
                before_filter :find_optional_project, :only => [:index]
                before_filter :build_new_issue_from_params, :only => [:new, :create, :update_form]
                accept_rss_auth :index, :show
                accept_api_auth :index, :show, :create, :update, :destroy
                rescue_from Query::StatementInvalid, :with => :query_statement_invalid
                helper :journals
                helper :projects
                include ProjectsHelper
                helper :custom_fields
                include CustomFieldsHelper
                helper :issue_relations
                include IssueRelationsHelper
                helper :watchers
                include WatchersHelper
                helper :attachments
                include AttachmentsHelper
                helper :queries
                include QueriesHelper
                helper :repositories
                include RepositoriesHelper
                helper :sort
                include SortHelper
                include IssuesHelper
                helper :timelog
                def index
                  retrieve_query
                  sort_init(@query.sort_criteria.empty? ? [['id', 'desc']] : @query.sort_criteria)
                  sort_update(@query.sortable_columns)
                  @query.sort_criteria = sort_criteria.to_a
                  if @query.valid?
                    case params[:format]
                    when 'csv', 'pdf'
                      @limit = Setting.issues_export_limit.to_i
                      if params[:columns] == 'all'
                        @query.column_names = @query.available_inline_columns.map(&:name)
                      end
                    when 'atom'
                      @limit = Setting.feeds_limit.to_i
                    when 'xml', 'json'
                      @offset, @limit = api_offset_and_limit
                      @query.column_names = %w(author)
                    else
                      @limit = per_page_option
                    end
                    @issue_count = @query.issue_count
                    @issue_pages = Paginator.new @issue_count, @limit, params['page']
                    @offset ||= @issue_pages.offset
                    @issues = @query.issues(:include => [:assigned_to, :tracker, :priority, :category, :fixed_version],
                                            :order => sort_clause,
                                            :offset => @offset,
                                            :limit => @limit)
                    @issue_count_by_group = @query.issue_count_by_group
                    respond_to do |format|
                      format.html { render :template => 'issues/index', :layout => !request.xhr? }
                      format.api  {
                        Issue.load_visible_relations(@issues) if include_in_api_response?('relations')
                      }
                      format.atom { render_feed(@issues, :title => "#{@project || Setting.app_title}: #{l(:label_issue_plural)}") }
                      format.csv  { send_data(query_to_csv(@issues, @query, params), :type => 'text/csv; header=present', :filename => 'issues.csv') }
                      format.pdf  { send_file_headers! :type => 'application/pdf', :filename => 'issues.pdf' }
                    end
                  else
                    respond_to do |format|
                      format.html { render(:template => 'issues/index', :layout => !request.xhr?) }
                      format.any(:atom, :csv, :pdf) { render(:nothing => true) }
                      format.api { render_validation_errors(@query) }
                    end
                  end
                rescue ActiveRecord::RecordNotFound
                  render_404
                end
                def show
                  @journals = @issue.journals.includes(:user, :details).
                                  references(:user, :details).
                                  reorder("#{Journal.table_name}.id ASC").to_a
                  @journals.each_with_index {|j,i| j.indice = i+1}
                  @journals.reject!(&:private_notes?) unless User.current.allowed_to?(:view_private_notes, @issue.project)
                  Journal.preload_journals_details_custom_fields(@journals)
                  @journals.select! {|journal| journal.notes? || journal.visible_details.any?}
                  @journals.reverse! if User.current.wants_comments_in_reverse_order?
                  @changesets = @issue.changesets.visible.to_a
                  @changesets.reverse! if User.current.wants_comments_in_reverse_order?
                  @relations = @issue.relations.select {|r| r.other_issue(@issue) && r.other_issue(@issue).visible? }
                  @allowed_statuses = @issue.new_statuses_allowed_to(User.current)
-                 @edit_allowed = User.current.allowed_to?(:edit_issues, @project)
                  @priorities = IssuePriority.active
                  @time_entry = TimeEntry.new(:issue => @issue, :project => @issue.project)
                  @relation = IssueRelation.new
                  respond_to do |format|
                    format.html {
                      retrieve_previous_and_next_issue_ids
                      render :template => 'issues/show'
                    }
                    format.api
                    format.atom { render :template => 'journals/index', :layout => false, :content_type => 'application/atom+xml' }
                    format.pdf  {
                      send_file_headers! :type => 'application/pdf', :filename => "#{@project.identifier}-#{@issue.id}.pdf"
                    }
                  end
                end
                # Add a new issue
                # The new issue will be created from an existing one if copy_from parameter is given
                def new
                  respond_to do |format|
                    format.html { render :action => 'new', :layout => !request.xhr? }
                  end
                end
                def create
                  unless User.current.allowed_to?(:add_issues, @issue.project)
                    raise ::Unauthorized
                  end
                  call_hook(:controller_issues_new_before_save, { :params => params, :issue => @issue })
                  @issue.save_attachments(params[:attachments] || (params[:issue] && params[:issue][:uploads]))
                  if @issue.save
                    call_hook(:controller_issues_new_after_save, { :params => params, :issue => @issue})
                    respond_to do |format|
                      format.html {
                        render_attachment_warning_if_needed(@issue)
                        flash[:notice] = l(:notice_issue_successful_create, :id => view_context.link_to("##{@issue.id}", issue_path(@issue), :title => @issue.subject))
                        if params[:continue]
                          attrs = {:tracker_id => @issue.tracker, :parent_issue_id => @issue.parent_issue_id}.reject {|k,v| v.nil?}
                          redirect_to new_project_issue_path(@issue.project, :issue => attrs)
                        else
                          redirect_to issue_path(@issue)
                        end
                      }
                      format.api  { render :action => 'show', :status => :created, :location => issue_url(@issue) }
                    end
                    return
                  else
                    respond_to do |format|
                      format.html { render :action => 'new' }
                      format.api  { render_validation_errors(@issue) }
                    end
                  end
                end
                def edit
                  return unless update_issue_from_params
                  respond_to do |format|
                    format.html { }
                    format.xml  { }
                  end
                end
                def update
                  return unless update_issue_from_params
                  @issue.save_attachments(params[:attachments] || (params[:issue] && params[:issue][:uploads]))
                  saved = false
                  begin
                    saved = save_issue_with_child_records
                  rescue ActiveRecord::StaleObjectError
                    @conflict = true
                    if params[:last_journal_id]
                      @conflict_journals = @issue.journals_after(params[:last_journal_id]).to_a
                      @conflict_journals.reject!(&:private_notes?) unless User.current.allowed_to?(:view_private_notes, @issue.project)
                    end
                  end
                  if saved
                    render_attachment_warning_if_needed(@issue)
                    flash[:notice] = l(:notice_successful_update) unless @issue.current_journal.new_record?
                    respond_to do |format|
                      format.html { redirect_back_or_default issue_path(@issue) }
                      format.api  { render_api_ok }
                    end
                  else
                    respond_to do |format|
                      format.html { render :action => 'edit' }
                      format.api  { render_validation_errors(@issue) }
                    end
                  end
                end
                # Updates the issue form when changing the project, status or tracker
                # on issue creation/update
                def update_form
                end
                # Bulk edit/copy a set of issues
                def bulk_edit
                  @issues.sort!
                  @copy = params[:copy].present?
                  @notes = params[:notes]
                  if @copy
                    unless User.current.allowed_to?(:copy_issues, @projects)
                      raise ::Unauthorized
                    end
                  end
                  @allowed_projects = Issue.allowed_target_projects
                  if params[:issue]
                    @target_project = @allowed_projects.detect {|p| p.id.to_s == params[:issue][:project_id].to_s}
                    if @target_project
                      target_projects = [@target_project]
                    end
                  end
                  target_projects ||= @projects
                  if @copy
                    # Copied issues will get their default statuses
                    @available_statuses = []
                  else
                    @available_statuses = @issues.map(&:new_statuses_allowed_to).reduce(:&)
                  end
                  @custom_fields = target_projects.map{|p|p.all_issue_custom_fields.visible}.reduce(:&)
                  @assignables = target_projects.map(&:assignable_users).reduce(:&)
                  @trackers = target_projects.map(&:trackers).reduce(:&)
                  @versions = target_projects.map {|p| p.shared_versions.open}.reduce(:&)
                  @categories = target_projects.map {|p| p.issue_categories}.reduce(:&)
                  if @copy
                    @attachments_present = @issues.detect {|i| i.attachments.any?}.present?
                    @subtasks_present = @issues.detect {|i| !i.leaf?}.present?
                  end
                  @safe_attributes = @issues.map(&:safe_attribute_names).reduce(:&)
                  @issue_params = params[:issue] || {}
                  @issue_params[:custom_field_values] ||= {}
                end
                def bulk_update
                  @issues.sort!
                  @copy = params[:copy].present?
                  attributes = parse_params_for_bulk_issue_attributes(params)
                  if @copy
                    unless User.current.allowed_to?(:copy_issues, @projects)
                      raise ::Unauthorized
                    end
                    target_projects = @projects
                    if attributes['project_id'].present?
                      target_projects = Project.where(:id => attributes['project_id']).to_a
                    end
                    unless User.current.allowed_to?(:add_issues, target_projects)
                      raise ::Unauthorized
                    end
                  end
                  unsaved_issues = []
                  saved_issues = []
                  if @copy && params[:copy_subtasks].present?
                    # Descendant issues will be copied with the parent task
                    # Don't copy them twice
                    @issues.reject! {|issue| @issues.detect {|other| issue.is_descendant_of?(other)}}
                  end
                  @issues.each do |orig_issue|
                    orig_issue.reload
                    if @copy
                      issue = orig_issue.copy({},
                        :attachments => params[:copy_attachments].present?,
                        :subtasks => params[:copy_subtasks].present?,
                        :link => link_copy?(params[:link_copy])
                      )
                    else
                      issue = orig_issue
                    end
                    journal = issue.init_journal(User.current, params[:notes])
                    issue.safe_attributes = attributes
                    call_hook(:controller_issues_bulk_edit_before_save, { :params => params, :issue => issue })
                    if issue.save
                      saved_issues << issue
                    else
                      unsaved_issues << orig_issue
                    end
                  end
                  if unsaved_issues.empty?
                    flash[:notice] = l(:notice_successful_update) unless saved_issues.empty?
                    if params[:follow]
                      if @issues.size == 1 && saved_issues.size == 1
                        redirect_to issue_path(saved_issues.first)
                      elsif saved_issues.map(&:project).uniq.size == 1
                        redirect_to project_issues_path(saved_issues.map(&:project).first)
                      end
                    else
                      redirect_back_or_default _project_issues_path(@project)
                    end
                  else
                    @saved_issues = @issues
                    @unsaved_issues = unsaved_issues
                    @issues = Issue.visible.where(:id => @unsaved_issues.map(&:id)).to_a
                    bulk_edit
                    render :action => 'bulk_edit'
                  end
                end
                def destroy
                  @hours = TimeEntry.where(:issue_id => @issues.map(&:id)).sum(:hours).to_f
                  if @hours > 0
                    case params[:todo]
                    when 'destroy'
                      # nothing to do
                    when 'nullify'
                      TimeEntry.where(['issue_id IN (?)', @issues]).update_all('issue_id = NULL')
                    when 'reassign'
                      reassign_to = @project.issues.find_by_id(params[:reassign_to_id])
                      if reassign_to.nil?
                        flash.now[:error] = l(:error_issue_not_found_in_project)
                        return
                      else
                        TimeEntry.where(['issue_id IN (?)', @issues]).
                          update_all("issue_id = #{reassign_to.id}")
                      end
                    else
                      # display the destroy form if it's a user request
                      return unless api_request?
                    end
                  end
                  @issues.each do |issue|
                    begin
                      issue.reload.destroy
                    rescue ::ActiveRecord::RecordNotFound # raised by #reload if issue no longer exists
                      # nothing to do, issue was already deleted (eg. by a parent)
                    end
                  end
                  respond_to do |format|
                    format.html { redirect_back_or_default _project_issues_path(@project) }
                    format.api  { render_api_ok }
                  end
                end
                private
                def find_project
                  project_id = params[:project_id] || (params[:issue] && params[:issue][:project_id])
                  @project = Project.find(project_id)
                rescue ActiveRecord::RecordNotFound
                  render_404
                end
                def retrieve_previous_and_next_issue_ids
                  retrieve_query_from_session
                  if @query
                    sort_init(@query.sort_criteria.empty? ? [['id', 'desc']] : @query.sort_criteria)
                    sort_update(@query.sortable_columns, 'issues_index_sort')
                    limit = 500
                    issue_ids = @query.issue_ids(:order => sort_clause, :limit => (limit + 1), :include => [:assigned_to, :tracker, :priority, :category, :fixed_version])
                    if (idx = issue_ids.index(@issue.id)) && idx < limit
                      if issue_ids.size < 500
                        @issue_position = idx + 1
                        @issue_count = issue_ids.size
                      end
                      @prev_issue_id = issue_ids[idx - 1] if idx > 0
                      @next_issue_id = issue_ids[idx + 1] if idx < (issue_ids.size - 1)
                    end
                  end
                end
                # Used by #edit and #update to set some common instance variables
                # from the params
                # TODO: Refactor, not everything in here is needed by #edit
                def update_issue_from_params
-                 @edit_allowed = User.current.allowed_to?(:edit_issues, @project)
                  @time_entry = TimeEntry.new(:issue => @issue, :project => @issue.project)
                  if params[:time_entry]
                    @time_entry.attributes = params[:time_entry]
                  end
                  @issue.init_journal(User.current)
                  issue_attributes = params[:issue]
                  if issue_attributes && params[:conflict_resolution]
                    case params[:conflict_resolution]
                    when 'overwrite'
                      issue_attributes = issue_attributes.dup
                      issue_attributes.delete(:lock_version)
                    when 'add_notes'
                      issue_attributes = issue_attributes.slice(:notes)
                    when 'cancel'
                      redirect_to issue_path(@issue)
                      return false
                    end
                  end
                  @issue.safe_attributes = issue_attributes
                  @priorities = IssuePriority.active
                  @allowed_statuses = @issue.new_statuses_allowed_to(User.current)
                  true
                end
                # TODO: Refactor, lots of extra code in here
                # TODO: Changing tracker on an existing issue should not trigger this
                def build_new_issue_from_params
                  if params[:id].blank?
                    @issue = Issue.new
                    if params[:copy_from]
                      begin
                        @issue.init_journal(User.current)
                        @copy_from = Issue.visible.find(params[:copy_from])
                        unless User.current.allowed_to?(:copy_issues, @copy_from.project)
                          raise ::Unauthorized
                        end
                        @link_copy = link_copy?(params[:link_copy]) || request.get?
                        @copy_attachments = params[:copy_attachments].present? || request.get?
                        @copy_subtasks = params[:copy_subtasks].present? || request.get?
                        @issue.copy_from(@copy_from, :attachments => @copy_attachments, :subtasks => @copy_subtasks, :link => @link_copy)
                      rescue ActiveRecord::RecordNotFound
                        render_404
                        return
                      end
                    end
                    @issue.project = @project
                    @issue.author ||= User.current
                    @issue.start_date ||= Date.today if Setting.default_issue_start_date_to_creation_date?
                  else
                    @issue = @project.issues.visible.find(params[:id])
                  end
                  if attrs = params[:issue].deep_dup
                    if params[:was_default_status] == attrs[:status_id]
                      attrs.delete(:status_id)
                    end
                    @issue.safe_attributes = attrs
                  end
                  @issue.tracker ||= @project.trackers.first
                  if @issue.tracker.nil?
                    render_error l(:error_no_tracker_in_project)
                    return false
                  end
                  if @issue.status.nil?
                    render_error l(:error_no_default_issue_status)
                    return false
                  end
                  @priorities = IssuePriority.active
                  @allowed_statuses = @issue.new_statuses_allowed_to(User.current, @issue.new_record?)
                end
                def parse_params_for_bulk_issue_attributes(params)
                  attributes = (params[:issue] || {}).reject {|k,v| v.blank?}
                  attributes.keys.each {|k| attributes[k] = '' if attributes[k] == 'none'}
                  if custom = attributes[:custom_field_values]
                    custom.reject! {|k,v| v.blank?}
                    custom.keys.each do |k|
                      if custom[k].is_a?(Array)
                        custom[k] << '' if custom[k].delete('__none__')
                      else
                        custom[k] = '' if custom[k] == '__none__'
                      end
                    end
                  end
                  attributes
                end
                # Saves @issue and a time_entry from the parameters
                def save_issue_with_child_records
                  Issue.transaction do
                    if params[:time_entry] && (params[:time_entry][:hours].present? || params[:time_entry][:comments].present?) && User.current.allowed_to?(:log_time, @issue.project)
                      time_entry = @time_entry || TimeEntry.new
                      time_entry.project = @issue.project
                      time_entry.issue = @issue
                      time_entry.user = User.current
                      time_entry.spent_on = User.current.today
                      time_entry.attributes = params[:time_entry]
                      @issue.time_entries << time_entry
                    end
                    call_hook(:controller_issues_edit_before_save, { :params => params, :issue => @issue, :time_entry => time_entry, :journal => @issue.current_journal})
                    if @issue.save
                      call_hook(:controller_issues_edit_after_save, { :params => params, :issue => @issue, :time_entry => time_entry, :journal => @issue.current_journal})
                    else
                      raise ActiveRecord::Rollback
                    end
                  end
                end
                def link_copy?(param)
                  case Setting.link_copied_issue
                  when 'yes'
                    true
                  when 'no'
                    false
                  when 'ask'
                    param == '1'
                  end
                end
              end

app/models/issue.rb +6 -1

              # Redmine - project management software
              # Copyright (C) 2006-2015  Jean-Philippe Lang
              #
              # This program is free software; you can redistribute it and/or
              # modify it under the terms of the GNU General Public License
              # as published by the Free Software Foundation; either version 2
              # of the License, or (at your option) any later version.
              #
              # This program is distributed in the hope that it will be useful,
              # but WITHOUT ANY WARRANTY; without even the implied warranty of
              # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
              # GNU General Public License for more details.
              #
              # You should have received a copy of the GNU General Public License
              # along with this program; if not, write to the Free Software
              # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
              class Issue < ActiveRecord::Base
                include Redmine::SafeAttributes
                include Redmine::Utils::DateCalculation
                include Redmine::I18n
                before_save :set_parent_id
                include Redmine::NestedSet::IssueNestedSet
                belongs_to :project
                belongs_to :tracker
                belongs_to :status, :class_name => 'IssueStatus'
                belongs_to :author, :class_name => 'User'
                belongs_to :assigned_to, :class_name => 'Principal'
                belongs_to :fixed_version, :class_name => 'Version'
                belongs_to :priority, :class_name => 'IssuePriority'
                belongs_to :category, :class_name => 'IssueCategory'
                has_many :journals, :as => :journalized, :dependent => :destroy, :inverse_of => :journalized
                has_many :visible_journals,
                  lambda {where(["(#{Journal.table_name}.private_notes = ? OR (#{Project.allowed_to_condition(User.current, :view_private_notes)}))", false])},
                  :class_name => 'Journal',
                  :as => :journalized
                has_many :time_entries, :dependent => :destroy
                has_and_belongs_to_many :changesets, lambda {order("#{Changeset.table_name}.committed_on ASC, #{Changeset.table_name}.id ASC")}
                has_many :relations_from, :class_name => 'IssueRelation', :foreign_key => 'issue_from_id', :dependent => :delete_all
                has_many :relations_to, :class_name => 'IssueRelation', :foreign_key => 'issue_to_id', :dependent => :delete_all
                acts_as_attachable :after_add => :attachment_added, :after_remove => :attachment_removed
                acts_as_customizable
                acts_as_watchable
                acts_as_searchable :columns => ['subject', "#{table_name}.description"],
                                   :preload => [:project, :status, :tracker],
                                   :scope => lambda {|options| options[:open_issues] ? self.open : self.all}
                acts_as_event :title => Proc.new {|o| "#{o.tracker.name} ##{o.id} (#{o.status}): #{o.subject}"},
                              :url => Proc.new {|o| {:controller => 'issues', :action => 'show', :id => o.id}},
                              :type => Proc.new {|o| 'issue' + (o.closed? ? ' closed' : '') }
                acts_as_activity_provider :scope => preload(:project, :author, :tracker),
                                          :author_key => :author_id
                DONE_RATIO_OPTIONS = %w(issue_field issue_status)
                attr_reader :current_journal
                delegate :notes, :notes=, :private_notes, :private_notes=, :to => :current_journal, :allow_nil => true
                validates_presence_of :subject, :project, :tracker
                validates_presence_of :priority, :if => Proc.new {|issue| issue.new_record? || issue.priority_id_changed?}
                validates_presence_of :status, :if => Proc.new {|issue| issue.new_record? || issue.status_id_changed?}
                validates_presence_of :author, :if => Proc.new {|issue| issue.new_record? || issue.author_id_changed?}
                validates_length_of :subject, :maximum => 255
                validates_inclusion_of :done_ratio, :in => 0..100
                validates :estimated_hours, :numericality => {:greater_than_or_equal_to => 0, :allow_nil => true, :message => :invalid}
                validates :start_date, :date => true
                validates :due_date, :date => true
                validate :validate_issue, :validate_required_fields
                attr_protected :id
                scope :visible, lambda {|*args|
                  joins(:project).
                  where(Issue.visible_condition(args.shift || User.current, *args))
                }
                scope :open, lambda {|*args|
                  is_closed = args.size > 0 ? !args.first : false
                  joins(:status).
                  where("#{IssueStatus.table_name}.is_closed = ?", is_closed)
                }
                scope :recently_updated, lambda { order("#{Issue.table_name}.updated_on DESC") }
                scope :on_active_project, lambda {
                  joins(:project).
                  where("#{Project.table_name}.status = ?", Project::STATUS_ACTIVE)
                }
                scope :fixed_version, lambda {|versions|
                  ids = [versions].flatten.compact.map {|v| v.is_a?(Version) ? v.id : v}
                  ids.any? ? where(:fixed_version_id => ids) : where('1=0')
                }
                before_create :default_assign
                before_save :close_duplicates, :update_done_ratio_from_issue_status,
                            :force_updated_on_change, :update_closed_on, :set_assigned_to_was
                after_save {|issue| issue.send :after_project_change if !issue.id_changed? && issue.project_id_changed?}
                after_save :reschedule_following_issues, :update_nested_set_attributes,
                           :update_parent_attributes, :create_journal
                # Should be after_create but would be called before previous after_save callbacks
                after_save :after_create_from_copy
                after_destroy :update_parent_attributes
                after_create :send_notification
                # Keep it at the end of after_save callbacks
                after_save :clear_assigned_to_was
                # Returns a SQL conditions string used to find all issues visible by the specified user
                def self.visible_condition(user, options={})
                  Project.allowed_to_condition(user, :view_issues, options) do |role, user|
                    if user.id && user.logged?
                      case role.issues_visibility
                      when 'all'
                        nil
                      when 'default'
                        user_ids = [user.id] + user.groups.map(&:id).compact
                        "(#{table_name}.is_private = #{connection.quoted_false} OR #{table_name}.author_id = #{user.id} OR #{table_name}.assigned_to_id IN (#{user_ids.join(',')}))"
                      when 'own'
                        user_ids = [user.id] + user.groups.map(&:id).compact
                        "(#{table_name}.author_id = #{user.id} OR #{table_name}.assigned_to_id IN (#{user_ids.join(',')}))"
                      else
                        '1=0'
                      end
                    else
                      "(#{table_name}.is_private = #{connection.quoted_false})"
                    end
                  end
                end
                # Returns true if usr or current user is allowed to view the issue
                def visible?(usr=nil)
                  (usr || User.current).allowed_to?(:view_issues, self.project) do |role, user|
                    if user.logged?
                      case role.issues_visibility
                      when 'all'
                        true
                      when 'default'
                        !self.is_private? || (self.author == user || user.is_or_belongs_to?(assigned_to))
                      when 'own'
                        self.author == user || user.is_or_belongs_to?(assigned_to)
                      else
                        false
                      end
                    else
                      !self.is_private?
                    end
                  end
                end
                # Returns true if user or current user is allowed to edit or add a note to the issue
                def editable?(user=User.current)
-                 user.allowed_to?(:edit_issues, project) || user.allowed_to?(:add_issue_notes, project)
+                 attributes_editable?(user) || user.allowed_to?(:add_issue_notes, project)
+               end
+               # Returns true if user or current user is allowed to edit the issue
+               def attributes_editable?(user=User.current)
+                 user.allowed_to?(:edit_issues, project)
                end
                def initialize(attributes=nil, *args)
                  super
                  if new_record?
                    # set default values for new records only
                    self.priority ||= IssuePriority.default
                    self.watcher_user_ids = []
                  end
                end
                def create_or_update
                  super
                ensure
                  @status_was = nil
                end
                private :create_or_update
                # AR#Persistence#destroy would raise and RecordNotFound exception
                # if the issue was already deleted or updated (non matching lock_version).
                # This is a problem when bulk deleting issues or deleting a project
                # (because an issue may already be deleted if its parent was deleted
                # first).
                # The issue is reloaded by the nested_set before being deleted so
                # the lock_version condition should not be an issue but we handle it.
                def destroy
                  super
                rescue ActiveRecord::StaleObjectError, ActiveRecord::RecordNotFound
                  # Stale or already deleted
                  begin
                    reload
                  rescue ActiveRecord::RecordNotFound
                    # The issue was actually already deleted
                    @destroyed = true
                    return freeze
                  end
                  # The issue was stale, retry to destroy
                  super
                end
                alias :base_reload :reload
                def reload(*args)
                  @workflow_rule_by_attribute = nil
                  @assignable_versions = nil
                  @relations = nil
                  @spent_hours = nil
                  base_reload(*args)
                end
                # Overrides Redmine::Acts::Customizable::InstanceMethods#available_custom_fields
                def available_custom_fields
                  (project && tracker) ? (project.all_issue_custom_fields & tracker.custom_fields) : []
                end
                def visible_custom_field_values(user=nil)
                  user_real = user || User.current
                  custom_field_values.select do |value|
                    value.custom_field.visible_by?(project, user_real)
                  end
                end
                # Copies attributes from another issue, arg can be an id or an Issue
                def copy_from(arg, options={})
                  issue = arg.is_a?(Issue) ? arg : Issue.visible.find(arg)
                  self.attributes = issue.attributes.dup.except("id", "root_id", "parent_id", "lft", "rgt", "created_on", "updated_on")
                  self.custom_field_values = issue.custom_field_values.inject({}) {|h,v| h[v.custom_field_id] = v.value; h}
                  self.status = issue.status
                  self.author = User.current
                  unless options[:attachments] == false
                    self.attachments = issue.attachments.map do |attachement|
                      attachement.copy(:container => self)
                    end
                  end
                  @copied_from = issue
                  @copy_options = options
                  self
                end
                # Returns an unsaved copy of the issue
                def copy(attributes=nil, copy_options={})
                  copy = self.class.new.copy_from(self, copy_options)
                  copy.attributes = attributes if attributes
                  copy
                end
                # Returns true if the issue is a copy
                def copy?
                  @copied_from.present?
                end
                def status_id=(status_id)
                  if status_id.to_s != self.status_id.to_s
                    self.status = (status_id.present? ? IssueStatus.find_by_id(status_id) : nil)
                  end
                  self.status_id
                end
                # Sets the status.
                def status=(status)
                  if status != self.status
                    @workflow_rule_by_attribute = nil
                  end
                  association(:status).writer(status)
                end
                def priority_id=(pid)
                  self.priority = nil
                  write_attribute(:priority_id, pid)
                end
                def category_id=(cid)
                  self.category = nil
                  write_attribute(:category_id, cid)
                end
                def fixed_version_id=(vid)
                  self.fixed_version = nil
                  write_attribute(:fixed_version_id, vid)
                end
                def tracker_id=(tracker_id)
                  if tracker_id.to_s != self.tracker_id.to_s
                    self.tracker = (tracker_id.present? ? Tracker.find_by_id(tracker_id) : nil)
                  end
                  self.tracker_id
                end
                # Sets the tracker.
                # This will set the status to the default status of the new tracker if:
                # * the status was the default for the previous tracker
                # * or if the status was not part of the new tracker statuses
                # * or the status was nil
                def tracker=(tracker)
                  if tracker != self.tracker
                    if status == default_status
                      self.status = nil
                    elsif status && tracker && !tracker.issue_status_ids.include?(status.id)
                      self.status = nil
                    end
                    @custom_field_values = nil
                    @workflow_rule_by_attribute = nil
                  end
                  association(:tracker).writer(tracker)
                  self.status ||= default_status
                  self.tracker
                end
                def project_id=(project_id)
                  if project_id.to_s != self.project_id.to_s
                    self.project = (project_id.present? ? Project.find_by_id(project_id) : nil)
                  end
                  self.project_id
                end
                # Sets the project.
                # Unless keep_tracker argument is set to true, this will change the tracker
                # to the first tracker of the new project if the previous tracker is not part
                # of the new project trackers.
                # This will clear the fixed_version is it's no longer valid for the new project.
                # This will clear the parent issue if it's no longer valid for the new project.
                # This will set the category to the category with the same name in the new
                # project if it exists, or clear it if it doesn't.
                def project=(project, keep_tracker=false)
                  project_was = self.project
                  association(:project).writer(project)
                  if project_was && project && project_was != project
                    @assignable_versions = nil
                    unless keep_tracker || project.trackers.include?(tracker)
                      self.tracker = project.trackers.first
                    end
                    # Reassign to the category with same name if any
                    if category
                      self.category = project.issue_categories.find_by_name(category.name)
                    end
                    # Keep the fixed_version if it's still valid in the new_project
                    if fixed_version && fixed_version.project != project && !project.shared_versions.include?(fixed_version)
                      self.fixed_version = nil
                    end
                    # Clear the parent task if it's no longer valid
                    unless valid_parent_project?
                      self.parent_issue_id = nil
                    end
                    @custom_field_values = nil
                    @workflow_rule_by_attribute = nil
                  end
                  self.project
                end
                def description=(arg)
                  if arg.is_a?(String)
                    arg = arg.gsub(/(\r\n|\n|\r)/, "\r\n")
                  end
                  write_attribute(:description, arg)
                end
                # Overrides assign_attributes so that project and tracker get assigned first
                def assign_attributes_with_project_and_tracker_first(new_attributes, *args)
                  return if new_attributes.nil?
                  attrs = new_attributes.dup
                  attrs.stringify_keys!
                  %w(project project_id tracker tracker_id).each do |attr|
                    if attrs.has_key?(attr)
                      send "#{attr}=", attrs.delete(attr)
                    end
                  end
                  send :assign_attributes_without_project_and_tracker_first, attrs, *args
                end
                # Do not redefine alias chain on reload (see #4838)
                alias_method_chain(:assign_attributes, :project_and_tracker_first) unless method_defined?(:assign_attributes_without_project_and_tracker_first)
                def attributes=(new_attributes)
                  assign_attributes new_attributes
                end
                def estimated_hours=(h)
                  write_attribute :estimated_hours, (h.is_a?(String) ? h.to_hours : h)
                end
                safe_attributes 'project_id',
                  :if => lambda {|issue, user|
                    if issue.new_record?
                      issue.copy?
                    else
                      user.allowed_to?(:edit_issues, issue.project)
                    end
                  }
                safe_attributes 'tracker_id',
                  'status_id',
                  'category_id',
                  'assigned_to_id',
                  'priority_id',
                  'fixed_version_id',
                  'subject',
                  'description',
                  'start_date',
                  'due_date',
                  'done_ratio',
                  'estimated_hours',
                  'custom_field_values',
                  'custom_fields',
                  'lock_version',
                  'notes',
                  :if => lambda {|issue, user| issue.new_record? || user.allowed_to?(:edit_issues, issue.project) }
                safe_attributes 'notes',
                  :if => lambda {|issue, user| user.allowed_to?(:add_issue_notes, issue.project)}
                safe_attributes 'private_notes',
                  :if => lambda {|issue, user| !issue.new_record? && user.allowed_to?(:set_notes_private, issue.project)}
                safe_attributes 'watcher_user_ids',
                  :if => lambda {|issue, user| issue.new_record? && user.allowed_to?(:add_issue_watchers, issue.project)}
                safe_attributes 'is_private',
                  :if => lambda {|issue, user|
                    user.allowed_to?(:set_issues_private, issue.project) ||
                      (issue.author_id == user.id && user.allowed_to?(:set_own_issues_private, issue.project))
                  }
                safe_attributes 'parent_issue_id',
                  :if => lambda {|issue, user| (issue.new_record? || user.allowed_to?(:edit_issues, issue.project)) &&
                    user.allowed_to?(:manage_subtasks, issue.project)}
                def safe_attribute_names(user=nil)
                  names = super
                  names -= disabled_core_fields
                  names -= read_only_attribute_names(user)
                  if new_record? && copy?
                    names |= %w(project_id)
                  end
                  names
                end
                # Safely sets attributes
                # Should be called from controllers instead of #attributes=
                # attr_accessible is too rough because we still want things like
                # Issue.new(:project => foo) to work
                def safe_attributes=(attrs, user=User.current)
                  return unless attrs.is_a?(Hash)
                  attrs = attrs.deep_dup
                  # Project and Tracker must be set before since new_statuses_allowed_to depends on it.
                  if (p = attrs.delete('project_id')) && safe_attribute?('project_id')
                    if allowed_target_projects(user).where(:id => p.to_i).exists?
                      self.project_id = p
                    end
                  end
                  if (t = attrs.delete('tracker_id')) && safe_attribute?('tracker_id')
                    self.tracker_id = t
                  end
                  if (s = attrs.delete('status_id')) && safe_attribute?('status_id')
                    if new_statuses_allowed_to(user).collect(&:id).include?(s.to_i)
                      self.status_id = s
                    end
                  end
                  attrs = delete_unsafe_attributes(attrs, user)
                  return if attrs.empty?
                  unless leaf?
                    attrs.reject! {|k,v| %w(priority_id done_ratio start_date due_date estimated_hours).include?(k)}
                  end
                  if attrs['parent_issue_id'].present?
                    s = attrs['parent_issue_id'].to_s
                    unless (m = s.match(%r{\A#?(\d+)\z})) && (m[1] == parent_id.to_s || Issue.visible(user).exists?(m[1]))
                      @invalid_parent_issue_id = attrs.delete('parent_issue_id')
                    end
                  end
                  if attrs['custom_field_values'].present?
                    editable_custom_field_ids = editable_custom_field_values(user).map {|v| v.custom_field_id.to_s}
                    attrs['custom_field_values'].select! {|k, v| editable_custom_field_ids.include?(k.to_s)}
                  end
                  if attrs['custom_fields'].present?
                    editable_custom_field_ids = editable_custom_field_values(user).map {|v| v.custom_field_id.to_s}
                    attrs['custom_fields'].select! {|c| editable_custom_field_ids.include?(c['id'].to_s)}
                  end
                  # mass-assignment security bypass
                  assign_attributes attrs, :without_protection => true
                end
                def disabled_core_fields
                  tracker ? tracker.disabled_core_fields : []
                end
                # Returns the custom_field_values that can be edited by the given user
                def editable_custom_field_values(user=nil)
                  visible_custom_field_values(user).reject do |value|
                    read_only_attribute_names(user).include?(value.custom_field_id.to_s)
                  end
                end
                # Returns the custom fields that can be edited by the given user
                def editable_custom_fields(user=nil)
                  editable_custom_field_values(user).map(&:custom_field).uniq
                end
                # Returns the names of attributes that are read-only for user or the current user
                # For users with multiple roles, the read-only fields are the intersection of
                # read-only fields of each role
                # The result is an array of strings where sustom fields are represented with their ids
                #
                # Examples:
                #   issue.read_only_attribute_names # => ['due_date', '2']
                #   issue.read_only_attribute_names(user) # => []
                def read_only_attribute_names(user=nil)
                  workflow_rule_by_attribute(user).reject {|attr, rule| rule != 'readonly'}.keys
                end
                # Returns the names of required attributes for user or the current user
                # For users with multiple roles, the required fields are the intersection of
                # required fields of each role
                # The result is an array of strings where sustom fields are represented with their ids
                #
                # Examples:
                #   issue.required_attribute_names # => ['due_date', '2']
                #   issue.required_attribute_names(user) # => []
                def required_attribute_names(user=nil)
                  workflow_rule_by_attribute(user).reject {|attr, rule| rule != 'required'}.keys
                end
                # Returns true if the attribute is required for user
                def required_attribute?(name, user=nil)
                  required_attribute_names(user).include?(name.to_s)
                end
                # Returns a hash of the workflow rule by attribute for the given user
                #
                # Examples:
                #   issue.workflow_rule_by_attribute # => {'due_date' => 'required', 'start_date' => 'readonly'}
                def workflow_rule_by_attribute(user=nil)
                  return @workflow_rule_by_attribute if @workflow_rule_by_attribute && user.nil?
                  user_real = user || User.current
                  roles = user_real.admin ? Role.all.to_a : user_real.roles_for_project(project)
                  roles = roles.select(&:consider_workflow?)
                  return {} if roles.empty?
                  result = {}
                  workflow_permissions = WorkflowPermission.where(:tracker_id => tracker_id, :old_status_id => status_id, :role_id => roles.map(&:id)).to_a
                  if workflow_permissions.any?
                    workflow_rules = workflow_permissions.inject({}) do |h, wp|
                      h[wp.field_name] ||= []
                      h[wp.field_name] << wp.rule
                      h
                    end
                    workflow_rules.each do |attr, rules|
                      next if rules.size < roles.size
                      uniq_rules = rules.uniq
                      if uniq_rules.size == 1
                        result[attr] = uniq_rules.first
                      else
                        result[attr] = 'required'
                      end
                    end
                  end
                  @workflow_rule_by_attribute = result if user.nil?
                  result
                end
                private :workflow_rule_by_attribute
                def done_ratio
                  if Issue.use_status_for_done_ratio? && status && status.default_done_ratio
                    status.default_done_ratio
                  else
                    read_attribute(:done_ratio)
                  end
                end
                def self.use_status_for_done_ratio?
                  Setting.issue_done_ratio == 'issue_status'
                end
                def self.use_field_for_done_ratio?
                  Setting.issue_done_ratio == 'issue_field'
                end
                def validate_issue
                  if due_date && start_date && (start_date_changed? || due_date_changed?) && due_date < start_date
                    errors.add :due_date, :greater_than_start_date
                  end
                  if start_date && start_date_changed? && soonest_start && start_date < soonest_start
                    errors.add :start_date, :earlier_than_minimum_start_date, :date => format_date(soonest_start)
                  end
                  if fixed_version
                    if !assignable_versions.include?(fixed_version)
                      errors.add :fixed_version_id, :inclusion
                    elsif reopening? && fixed_version.closed?
                      errors.add :base, I18n.t(:error_can_not_reopen_issue_on_closed_version)
                    end
                  end
                  # Checks that the issue can not be added/moved to a disabled tracker
                  if project && (tracker_id_changed? || project_id_changed?)
                    unless project.trackers.include?(tracker)
                      errors.add :tracker_id, :inclusion
                    end
                  end
                  # Checks parent issue assignment
                  if @invalid_parent_issue_id.present?
                    errors.add :parent_issue_id, :invalid
                  elsif @parent_issue
                    if !valid_parent_project?(@parent_issue)
                      errors.add :parent_issue_id, :invalid
                    elsif (@parent_issue != parent) && (all_dependent_issues.include?(@parent_issue) || @parent_issue.all_dependent_issues.include?(self))
                      errors.add :parent_issue_id, :invalid
                    elsif !new_record?
                      # moving an existing issue
                      if move_possible?(@parent_issue)
                        # move accepted
                      else
                        errors.add :parent_issue_id, :invalid
                      end
                    end
                  end
                end
                # Validates the issue against additional workflow requirements
                def validate_required_fields
                  user = new_record? ? author : current_journal.try(:user)
                  required_attribute_names(user).each do |attribute|
                    if attribute =~ /^\d+$/
                      attribute = attribute.to_i
                      v = custom_field_values.detect {|v| v.custom_field_id == attribute }
                      if v && v.value.blank?
                        errors.add :base, v.custom_field.name + ' ' + l('activerecord.errors.messages.blank')
                      end
                    else
                      if respond_to?(attribute) && send(attribute).blank? && !disabled_core_fields.include?(attribute)
                        errors.add attribute, :blank
                      end
                    end
                  end
                end
                # Set the done_ratio using the status if that setting is set.  This will keep the done_ratios
                # even if the user turns off the setting later
                def update_done_ratio_from_issue_status
                  if Issue.use_status_for_done_ratio? && status && status.default_done_ratio
                    self.done_ratio = status.default_done_ratio
                  end
                end
                def init_journal(user, notes = "")
                  @current_journal ||= Journal.new(:journalized => self, :user => user, :notes => notes)
                end
                # Returns the current journal or nil if it's not initialized
                def current_journal
                  @current_journal
                end
                # Returns the names of attributes that are journalized when updating the issue
                def journalized_attribute_names
                  Issue.column_names - %w(id root_id lft rgt lock_version created_on updated_on closed_on)
                end
                # Returns the id of the last journal or nil
                def last_journal_id
                  if new_record?
                    nil
                  else
                    journals.maximum(:id)
                  end
                end
                # Returns a scope for journals that have an id greater than journal_id
                def journals_after(journal_id)
                  scope = journals.reorder("#{Journal.table_name}.id ASC")
                  if journal_id.present?
                    scope = scope.where("#{Journal.table_name}.id > ?", journal_id.to_i)
                  end
                  scope
                end
                # Returns the initial status of the issue
                # Returns nil for a new issue
                def status_was
                  if status_id_changed?
                    if status_id_was.to_i > 0
                      @status_was ||= IssueStatus.find_by_id(status_id_was)
                    end
                  else
                    @status_was ||= status
                  end
                end
                # Return true if the issue is closed, otherwise false
                def closed?
                  status.present? && status.is_closed?
                end
                # Returns true if the issue was closed when loaded
                def was_closed?
                  status_was.present? && status_was.is_closed?
                end
                # Return true if the issue is being reopened
                def reopening?
                  if new_record?
                    false
                  else
                    status_id_changed? && !closed? && was_closed?
                  end
                end
                alias :reopened? :reopening?
                # Return true if the issue is being closed
                def closing?
                  if new_record?
                    closed?
                  else
                    status_id_changed? && closed? && !was_closed?
                  end
                end
                # Returns true if the issue is overdue
                def overdue?
                  due_date.present? && (due_date < Date.today) && !closed?
                end
                # Is the amount of work done less than it should for the due date
                def behind_schedule?
                  return false if start_date.nil? || due_date.nil?
                  done_date = start_date + ((due_date - start_date + 1) * done_ratio / 100).floor
                  return done_date <= Date.today
                end
                # Does this issue have children?
                def children?
                  !leaf?
                end
                # Users the issue can be assigned to
                def assignable_users
                  users = project.assignable_users.to_a
                  users << author if author
                  users << assigned_to if assigned_to
                  users.uniq.sort
                end
                # Versions that the issue can be assigned to
                def assignable_versions
                  return @assignable_versions if @assignable_versions
                  versions = project.shared_versions.open.to_a
                  if fixed_version
                    if fixed_version_id_changed?
                      # nothing to do
                    elsif project_id_changed?
                      if project.shared_versions.include?(fixed_version)
                        versions << fixed_version
                      end
                    else
                      versions << fixed_version
                    end
                  end
                  @assignable_versions = versions.uniq.sort
                end
                # Returns true if this issue is blocked by another issue that is still open
                def blocked?
                  !relations_to.detect {|ir| ir.relation_type == 'blocks' && !ir.issue_from.closed?}.nil?
                end
                # Returns the default status of the issue based on its tracker
                # Returns nil if tracker is nil
                def default_status
                  tracker.try(:default_status)
                end
                # Returns an array of statuses that user is able to apply
                def new_statuses_allowed_to(user=User.current, include_default=false)
                  if new_record? && @copied_from
                    [default_status, @copied_from.status].compact.uniq.sort
                  else
                    initial_status = nil
                    if new_record?
                      initial_status = default_status
                    elsif tracker_id_changed?
                      if Tracker.where(:id => tracker_id_was, :default_status_id => status_id_was).any?
                        initial_status = default_status
                      elsif tracker.issue_status_ids.include?(status_id_was)
                        initial_status = IssueStatus.find_by_id(status_id_was)
                      else
                        initial_status = default_status
                      end
                    else
                      initial_status = status_was
                    end
                    initial_assigned_to_id = assigned_to_id_changed? ? assigned_to_id_was : assigned_to_id
                    assignee_transitions_allowed = initial_assigned_to_id.present? &&
                      (user.id == initial_assigned_to_id || user.group_ids.include?(initial_assigned_to_id))
                    statuses = []
                    if initial_status
                      statuses += initial_status.find_new_statuses_allowed_to(
                        user.admin ? Role.all.to_a : user.roles_for_project(project),
                        tracker,
                        author == user,
                        assignee_transitions_allowed
                        )
                    end
                    statuses << initial_status unless statuses.empty?
                    statuses << default_status if include_default
                    statuses = statuses.compact.uniq.sort
                    if blocked?
                      statuses.reject!(&:is_closed?)
                    end
                    statuses
                  end
                end
                # Returns the previous assignee if changed
                def assigned_to_was
                  # assigned_to_id_was is reset before after_save callbacks
                  user_id = @previous_assigned_to_id || assigned_to_id_was
                  if user_id && user_id != assigned_to_id
                    @assigned_to_was ||= User.find_by_id(user_id)
                  end
                end
                # Returns the users that should be notified
                def notified_users
                  notified = []
                  # Author and assignee are always notified unless they have been
                  # locked or don't want to be notified
                  notified << author if author
                  if assigned_to
                    notified += (assigned_to.is_a?(Group) ? assigned_to.users : [assigned_to])
                  end
                  if assigned_to_was
                    notified += (assigned_to_was.is_a?(Group) ? assigned_to_was.users : [assigned_to_was])
                  end
                  notified = notified.select {|u| u.active? && u.notify_about?(self)}
                  notified += project.notified_users
                  notified.uniq!
                  # Remove users that can not view the issue
                  notified.reject! {|user| !visible?(user)}
                  notified
                end
                # Returns the email addresses that should be notified
                def recipients
                  notified_users.collect(&:mail)
                end
                def each_notification(users, &block)
                  if users.any?
                    if custom_field_values.detect {|value| !value.custom_field.visible?}
                      users_by_custom_field_visibility = users.group_by do |user|
                        visible_custom_field_values(user).map(&:custom_field_id).sort
                      end
                      users_by_custom_field_visibility.values.each do |users|
                        yield(users)
                      end
                    else
                      yield(users)
                    end
                  end
                end
                # Returns the number of hours spent on this issue
                def spent_hours
                  @spent_hours ||= time_entries.sum(:hours) || 0
                end
                # Returns the total number of hours spent on this issue and its descendants
                #
                # Example:
                #   spent_hours => 0.0
                #   spent_hours => 50.2
                def total_spent_hours
                  @total_spent_hours ||=
                    self_and_descendants.
                      joins("LEFT JOIN #{TimeEntry.table_name} ON #{TimeEntry.table_name}.issue_id = #{Issue.table_name}.id").
                      sum("#{TimeEntry.table_name}.hours").to_f || 0.0
                end
                def relations
                  @relations ||= IssueRelation::Relations.new(self, (relations_from + relations_to).sort)
                end
                # Preloads relations for a collection of issues
                def self.load_relations(issues)
                  if issues.any?
                    relations = IssueRelation.where("issue_from_id IN (:ids) OR issue_to_id IN (:ids)", :ids => issues.map(&:id)).all
                    issues.each do |issue|
                      issue.instance_variable_set "@relations", relations.select {|r| r.issue_from_id == issue.id || r.issue_to_id == issue.id}
                    end
                  end
                end
                # Preloads visible spent time for a collection of issues
                def self.load_visible_spent_hours(issues, user=User.current)
                  if issues.any?
                    hours_by_issue_id = TimeEntry.visible(user).group(:issue_id).sum(:hours)
                    issues.each do |issue|
                      issue.instance_variable_set "@spent_hours", (hours_by_issue_id[issue.id] || 0)
                    end
                  end
                end
                # Preloads visible relations for a collection of issues
                def self.load_visible_relations(issues, user=User.current)
                  if issues.any?
                    issue_ids = issues.map(&:id)
                    # Relations with issue_from in given issues and visible issue_to
                    relations_from = IssueRelation.joins(:issue_to => :project).
                                       where(visible_condition(user)).where(:issue_from_id => issue_ids).to_a
                    # Relations with issue_to in given issues and visible issue_from
                    relations_to = IssueRelation.joins(:issue_from => :project).
                                       where(visible_condition(user)).
                                       where(:issue_to_id => issue_ids).to_a
                    issues.each do |issue|
                      relations =
                        relations_from.select {|relation| relation.issue_from_id == issue.id} +
                        relations_to.select {|relation| relation.issue_to_id == issue.id}
                      issue.instance_variable_set "@relations", IssueRelation::Relations.new(issue, relations.sort)
                    end
                  end
                end
                # Finds an issue relation given its id.
                def find_relation(relation_id)
                  IssueRelation.where("issue_to_id = ? OR issue_from_id = ?", id, id).find(relation_id)
                end
                # Returns all the other issues that depend on the issue
                # The algorithm is a modified breadth first search (bfs)
                def all_dependent_issues(except=[])
                  # The found dependencies
                  dependencies = []
                  # The visited flag for every node (issue) used by the breadth first search
                  eNOT_DISCOVERED         = 0       # The issue is "new" to the algorithm, it has not seen it before.
                  ePROCESS_ALL            = 1       # The issue is added to the queue. Process both children and relations of
                                                    # the issue when it is processed.
                  ePROCESS_RELATIONS_ONLY = 2       # The issue was added to the queue and will be output as dependent issue,
                                                    # but its children will not be added to the queue when it is processed.
                  eRELATIONS_PROCESSED    = 3       # The related issues, the parent issue and the issue itself have been added to
                                                    # the queue, but its children have not been added.
                  ePROCESS_CHILDREN_ONLY  = 4       # The relations and the parent of the issue have been added to the queue, but
                                                    # the children still need to be processed.
                  eALL_PROCESSED          = 5       # The issue and all its children, its parent and its related issues have been
                                                    # added as dependent issues. It needs no further processing.
                  issue_status = Hash.new(eNOT_DISCOVERED)
                  # The queue
                  queue = []
                  # Initialize the bfs, add start node (self) to the queue
                  queue << self
                  issue_status[self] = ePROCESS_ALL
                  while (!queue.empty?) do
                    current_issue = queue.shift
                    current_issue_status = issue_status[current_issue]
                    dependencies << current_issue
                    # Add parent to queue, if not already in it.
                    parent = current_issue.parent
                    parent_status = issue_status[parent]
                    if parent && (parent_status == eNOT_DISCOVERED) && !except.include?(parent)
                      queue << parent
                      issue_status[parent] = ePROCESS_RELATIONS_ONLY
                    end
                    # Add children to queue, but only if they are not already in it and
                    # the children of the current node need to be processed.
                    if (current_issue_status == ePROCESS_CHILDREN_ONLY || current_issue_status == ePROCESS_ALL)
                      current_issue.children.each do |child|
                        next if except.include?(child)
                        if (issue_status[child] == eNOT_DISCOVERED)
                          queue << child
                          issue_status[child] = ePROCESS_ALL
                        elsif (issue_status[child] == eRELATIONS_PROCESSED)
                          queue << child
                          issue_status[child] = ePROCESS_CHILDREN_ONLY
                        elsif (issue_status[child] == ePROCESS_RELATIONS_ONLY)
                          queue << child
                          issue_status[child] = ePROCESS_ALL
                        end
                      end
                    end
                    # Add related issues to the queue, if they are not already in it.
                    current_issue.relations_from.map(&:issue_to).each do |related_issue|
                      next if except.include?(related_issue)
                      if (issue_status[related_issue] == eNOT_DISCOVERED)
                        queue << related_issue
                        issue_status[related_issue] = ePROCESS_ALL
                      elsif (issue_status[related_issue] == eRELATIONS_PROCESSED)
                        queue << related_issue
                        issue_status[related_issue] = ePROCESS_CHILDREN_ONLY
                      elsif (issue_status[related_issue] == ePROCESS_RELATIONS_ONLY)
                        queue << related_issue
                        issue_status[related_issue] = ePROCESS_ALL
                      end
                    end
                    # Set new status for current issue
                    if (current_issue_status == ePROCESS_ALL) || (current_issue_status == ePROCESS_CHILDREN_ONLY)
                      issue_status[current_issue] = eALL_PROCESSED
                    elsif (current_issue_status == ePROCESS_RELATIONS_ONLY)
                      issue_status[current_issue] = eRELATIONS_PROCESSED
                    end
                  end # while
                  # Remove the issues from the "except" parameter from the result array
                  dependencies -= except
                  dependencies.delete(self)
                  dependencies
                end
                # Returns an array of issues that duplicate this one
                def duplicates
                  relations_to.select {|r| r.relation_type == IssueRelation::TYPE_DUPLICATES}.collect {|r| r.issue_from}
                end
                # Returns the due date or the target due date if any
                # Used on gantt chart
                def due_before
                  due_date || (fixed_version ? fixed_version.effective_date : nil)
                end
                # Returns the time scheduled for this issue.
                #
                # Example:
                #   Start Date: 2/26/09, End Date: 3/04/09
                #   duration => 6
                def duration
                  (start_date && due_date) ? due_date - start_date : 0
                end
                # Returns the duration in working days
                def working_duration
                  (start_date && due_date) ? working_days(start_date, due_date) : 0
                end
                def soonest_start(reload=false)
                  @soonest_start = nil if reload
                  @soonest_start ||= (
                      relations_to(reload).collect{|relation| relation.successor_soonest_start} +
                      [(@parent_issue || parent).try(:soonest_start)]
                    ).compact.max
                end
                # Sets start_date on the given date or the next working day
                # and changes due_date to keep the same working duration.
                def reschedule_on(date)
                  wd = working_duration
                  date = next_working_date(date)
                  self.start_date = date
                  self.due_date = add_working_days(date, wd)
                end
                # Reschedules the issue on the given date or the next working day and saves the record.
                # If the issue is a parent task, this is done by rescheduling its subtasks.
                def reschedule_on!(date)
                  return if date.nil?
                  if leaf?
                    if start_date.nil? || start_date != date
                      if start_date && start_date > date
                        # Issue can not be moved earlier than its soonest start date
                        date = [soonest_start(true), date].compact.max
                      end
                      reschedule_on(date)
                      begin
                        save
                      rescue ActiveRecord::StaleObjectError
                        reload
                        reschedule_on(date)
                        save
                      end
                    end
                  else
                    leaves.each do |leaf|
                      if leaf.start_date
                        # Only move subtask if it starts at the same date as the parent
                        # or if it starts before the given date
                        if start_date == leaf.start_date || date > leaf.start_date
                          leaf.reschedule_on!(date)
                        end
                      else
                        leaf.reschedule_on!(date)
                      end
                    end
                  end
                end
                def <=>(issue)
                  if issue.nil?
                    -1
                  elsif root_id != issue.root_id
                    (root_id || 0) <=> (issue.root_id || 0)
                  else
                    (lft || 0) <=> (issue.lft || 0)
                  end
                end
                def to_s
                  "#{tracker} ##{id}: #{subject}"
                end
                # Returns a string of css classes that apply to the issue
                def css_classes(user=User.current)
                  s = "issue tracker-#{tracker_id} status-#{status_id} #{priority.try(:css_classes)}"
                  s << ' closed' if closed?
                  s << ' overdue' if overdue?
                  s << ' child' if child?
                  s << ' parent' unless leaf?
                  s << ' private' if is_private?
                  if user.logged?
                    s << ' created-by-me' if author_id == user.id
                    s << ' assigned-to-me' if assigned_to_id == user.id
                    s << ' assigned-to-my-group' if user.groups.any? {|g| g.id == assigned_to_id}
                  end
                  s
                end
                # Unassigns issues from +version+ if it's no longer shared with issue's project
                def self.update_versions_from_sharing_change(version)
                  # Update issues assigned to the version
                  update_versions(["#{Issue.table_name}.fixed_version_id = ?", version.id])
                end
                # Unassigns issues from versions that are no longer shared
                # after +project+ was moved
                def self.update_versions_from_hierarchy_change(project)
                  moved_project_ids = project.self_and_descendants.reload.collect(&:id)
                  # Update issues of the moved projects and issues assigned to a version of a moved project
                  Issue.update_versions(
                          ["#{Version.table_name}.project_id IN (?) OR #{Issue.table_name}.project_id IN (?)",
                           moved_project_ids, moved_project_ids]
                        )
                end
                def parent_issue_id=(arg)
                  s = arg.to_s.strip.presence
                  if s && (m = s.match(%r{\A#?(\d+)\z})) && (@parent_issue = Issue.find_by_id(m[1]))
                    @invalid_parent_issue_id = nil
                  elsif s.blank?
                    @parent_issue = nil
                    @invalid_parent_issue_id = nil
                  else
                    @parent_issue = nil
                    @invalid_parent_issue_id = arg
                  end
                end
                def parent_issue_id
                  if @invalid_parent_issue_id
                    @invalid_parent_issue_id
                  elsif instance_variable_defined? :@parent_issue
                    @parent_issue.nil? ? nil : @parent_issue.id
                  else
                    parent_id
                  end
                end
                def set_parent_id
                  self.parent_id = parent_issue_id
                end
                # Returns true if issue's project is a valid
                # parent issue project
                def valid_parent_project?(issue=parent)
                  return true if issue.nil? || issue.project_id == project_id
                  case Setting.cross_project_subtasks
                  when 'system'
                    true
                  when 'tree'
                    issue.project.root == project.root
                  when 'hierarchy'
                    issue.project.is_or_is_ancestor_of?(project) || issue.project.is_descendant_of?(project)
                  when 'descendants'
                    issue.project.is_or_is_ancestor_of?(project)
                  else
                    false
                  end
                end
                # Returns an issue scope based on project and scope
                def self.cross_project_scope(project, scope=nil)
                  if project.nil?
                    return Issue
                  end
                  case scope
                  when 'all', 'system'
                    Issue
                  when 'tree'
                    Issue.joins(:project).where("(#{Project.table_name}.lft >= :lft AND #{Project.table_name}.rgt <= :rgt)",
                                                :lft => project.root.lft, :rgt => project.root.rgt)
                  when 'hierarchy'
                    Issue.joins(:project).where("(#{Project.table_name}.lft >= :lft AND #{Project.table_name}.rgt <= :rgt) OR (#{Project.table_name}.lft < :lft AND #{Project.table_name}.rgt > :rgt)",
                                                :lft => project.lft, :rgt => project.rgt)
                  when 'descendants'
                    Issue.joins(:project).where("(#{Project.table_name}.lft >= :lft AND #{Project.table_name}.rgt <= :rgt)",
                                                :lft => project.lft, :rgt => project.rgt)
                  else
                    Issue.where(:project_id => project.id)
                  end
                end
                def self.by_tracker(project)
                  count_and_group_by(:project => project, :association => :tracker)
                end
                def self.by_version(project)
                  count_and_group_by(:project => project, :association => :fixed_version)
                end
                def self.by_priority(project)
                  count_and_group_by(:project => project, :association => :priority)
                end
                def self.by_category(project)
                  count_and_group_by(:project => project, :association => :category)
                end
                def self.by_assigned_to(project)
                  count_and_group_by(:project => project, :association => :assigned_to)
                end
                def self.by_author(project)
                  count_and_group_by(:project => project, :association => :author)
                end
                def self.by_subproject(project)
                  r = count_and_group_by(:project => project, :with_subprojects => true, :association => :project)
                  r.reject {|r| r["project_id"] == project.id.to_s}
                end
                # Query generator for selecting groups of issue counts for a project
                # based on specific criteria
                #
                # Options
                # * project - Project to search in.
                # * with_subprojects - Includes subprojects issues if set to true.
                # * association - Symbol. Association for grouping.
                def self.count_and_group_by(options)
                  assoc = reflect_on_association(options[:association])
                  select_field = assoc.foreign_key
                  Issue.
                    visible(User.current, :project => options[:project], :with_subprojects => options[:with_subprojects]).
                    joins(:status, assoc.name).
                    group(:status_id, :is_closed, select_field).
                    count.
                    map do |columns, total|
                      status_id, is_closed, field_value = columns
                      is_closed = ['t', 'true', '1'].include?(is_closed.to_s)
                      {
                        "status_id" => status_id.to_s,
                        "closed" => is_closed,
                        select_field => field_value.to_s,
                        "total" => total.to_s
                      }
                    end
                end
                # Returns a scope of projects that user can assign the issue to
                def allowed_target_projects(user=User.current)
                  current_project = new_record? ? nil : project
                  self.class.allowed_target_projects(user, current_project)
                end
                # Returns a scope of projects that user can assign issues to
                # If current_project is given, it will be included in the scope
                def self.allowed_target_projects(user=User.current, current_project=nil)
                  condition = Project.allowed_to_condition(user, :add_issues)
                  if current_project
                    condition = ["(#{condition}) OR #{Project.table_name}.id = ?", current_project.id]
                  end
                  Project.where(condition)
                end
                private
                def after_project_change
                  # Update project_id on related time entries
                  TimeEntry.where({:issue_id => id}).update_all(["project_id = ?", project_id])
                  # Delete issue relations
                  unless Setting.cross_project_issue_relations?
                    relations_from.clear
                    relations_to.clear
                  end
                  # Move subtasks that were in the same project
                  children.each do |child|
                    next unless child.project_id == project_id_was
                    # Change project and keep project
                    child.send :project=, project, true
                    unless child.save
                      raise ActiveRecord::Rollback
                    end
                  end
                end
                # Callback for after the creation of an issue by copy
                # * adds a "copied to" relation with the copied issue
                # * copies subtasks from the copied issue
                def after_create_from_copy
                  return unless copy? && !@after_create_from_copy_handled
                  if (@copied_from.project_id == project_id || Setting.cross_project_issue_relations?) && @copy_options[:link] != false
                    if @current_journal
                      @copied_from.init_journal(@current_journal.user)
                    end
                    relation = IssueRelation.new(:issue_from => @copied_from, :issue_to => self, :relation_type => IssueRelation::TYPE_COPIED_TO)
                    unless relation.save
                      logger.error "Could not create relation while copying ##{@copied_from.id} to ##{id} due to validation errors: #{relation.errors.full_messages.join(', ')}" if logger
                    end
                  end
                  unless @copied_from.leaf? || @copy_options[:subtasks] == false
                    copy_options = (@copy_options || {}).merge(:subtasks => false)
                    copied_issue_ids = {@copied_from.id => self.id}
                    @copied_from.reload.descendants.reorder("#{Issue.table_name}.lft").each do |child|
                      # Do not copy self when copying an issue as a descendant of the copied issue
                      next if child == self
                      # Do not copy subtasks of issues that were not copied
                      next unless copied_issue_ids[child.parent_id]
                      # Do not copy subtasks that are not visible to avoid potential disclosure of private data
                      unless child.visible?
                        logger.error "Subtask ##{child.id} was not copied during ##{@copied_from.id} copy because it is not visible to the current user" if logger
                        next
                      end
                      copy = Issue.new.copy_from(child, copy_options)
                      if @current_journal
                        copy.init_journal(@current_journal.user)
                      end
                      copy.author = author
                      copy.project = project
                      copy.parent_issue_id = copied_issue_ids[child.parent_id]
                      unless copy.save
                        logger.error "Could not copy subtask ##{child.id} while copying ##{@copied_from.id} to ##{id} due to validation errors: #{copy.errors.full_messages.join(', ')}" if logger
                        next
                      end
                      copied_issue_ids[child.id] = copy.id
                    end
                  end
                  @after_create_from_copy_handled = true
                end
                def update_nested_set_attributes
                  if parent_id_changed?
                    update_nested_set_attributes_on_parent_change
                  end
                  remove_instance_variable(:@parent_issue) if instance_variable_defined?(:@parent_issue)
                end
                # Updates the nested set for when an existing issue is moved
                def update_nested_set_attributes_on_parent_change
                  former_parent_id = parent_id_was
                  # delete invalid relations of all descendants
                  self_and_descendants.each do |issue|
                    issue.relations.each do |relation|
                      relation.destroy unless relation.valid?
                    end
                  end
                  # update former parent
                  recalculate_attributes_for(former_parent_id) if former_parent_id
                end
                def update_parent_attributes
                  if parent_id
                    recalculate_attributes_for(parent_id)
                    association(:parent).reset
                  end
                end
                def recalculate_attributes_for(issue_id)
                  if issue_id && p = Issue.find_by_id(issue_id)
                    # priority = highest priority of children
                    if priority_position = p.children.joins(:priority).maximum("#{IssuePriority.table_name}.position")
                      p.priority = IssuePriority.find_by_position(priority_position)
                    end
                    # start/due dates = lowest/highest dates of children
                    p.start_date = p.children.minimum(:start_date)
                    p.due_date = p.children.maximum(:due_date)
                    if p.start_date && p.due_date && p.due_date < p.start_date
                      p.start_date, p.due_date = p.due_date, p.start_date
                    end
                    # done ratio = weighted average ratio of leaves
                    unless Issue.use_status_for_done_ratio? && p.status && p.status.default_done_ratio
                      leaves_count = p.leaves.count
                      if leaves_count > 0
                        average = p.leaves.where("estimated_hours > 0").average(:estimated_hours).to_f
                        if average == 0
                          average = 1
                        end
                        done = p.leaves.joins(:status).
                          sum("COALESCE(CASE WHEN estimated_hours > 0 THEN estimated_hours ELSE NULL END, #{average}) " +
                              "* (CASE WHEN is_closed = #{self.class.connection.quoted_true} THEN 100 ELSE COALESCE(done_ratio, 0) END)").to_f
                        progress = done / (average * leaves_count)
                        p.done_ratio = progress.round
                      end
                    end
                    # estimate = sum of leaves estimates
                    p.estimated_hours = p.leaves.sum(:estimated_hours).to_f
                    p.estimated_hours = nil if p.estimated_hours == 0.0
                    # ancestors will be recursively updated
                    p.save(:validate => false)
                  end
                end
                # Update issues so their versions are not pointing to a
                # fixed_version that is not shared with the issue's project
                def self.update_versions(conditions=nil)
                  # Only need to update issues with a fixed_version from
                  # a different project and that is not systemwide shared
                  Issue.joins(:project, :fixed_version).
                    where("#{Issue.table_name}.fixed_version_id IS NOT NULL" +
                      " AND #{Issue.table_name}.project_id <> #{Version.table_name}.project_id" +
                      " AND #{Version.table_name}.sharing <> 'system'").
                    where(conditions).each do |issue|
                    next if issue.project.nil? || issue.fixed_version.nil?
                    unless issue.project.shared_versions.include?(issue.fixed_version)
                      issue.init_journal(User.current)
                      issue.fixed_version = nil
                      issue.save
                    end
                  end
                end
                # Callback on file attachment
                def attachment_added(attachment)
                  if current_journal && !attachment.new_record?
                    current_journal.journalize_attachment(attachment, :added)
                  end
                end
                # Callback on attachment deletion
                def attachment_removed(attachment)
                  if current_journal && !attachment.new_record?
                    current_journal.journalize_attachment(attachment, :removed)
                    current_journal.save
                  end
                end
                # Called after a relation is added
                def relation_added(relation)
                  if current_journal
                    current_journal.journalize_relation(relation, :added)
                    current_journal.save
                  end
                end
                # Called after a relation is removed
                def relation_removed(relation)
                  if current_journal
                    current_journal.journalize_relation(relation, :removed)
                    current_journal.save
                  end
                end
                # Default assignment based on category
                def default_assign
                  if assigned_to.nil? && category && category.assigned_to
                    self.assigned_to = category.assigned_to
                  end
                end
                # Updates start/due dates of following issues
                def reschedule_following_issues
                  if start_date_changed? || due_date_changed?
                    relations_from.each do |relation|
                      relation.set_issue_to_dates
                    end
                  end
                end
                # Closes duplicates if the issue is being closed
                def close_duplicates
                  if closing?
                    duplicates.each do |duplicate|
                      # Reload is needed in case the duplicate was updated by a previous duplicate
                      duplicate.reload
                      # Don't re-close it if it's already closed
                      next if duplicate.closed?
                      # Same user and notes
                      if @current_journal
                        duplicate.init_journal(@current_journal.user, @current_journal.notes)
                      end
                      duplicate.update_attribute :status, self.status
                    end
                  end
                end
                # Make sure updated_on is updated when adding a note and set updated_on now
                # so we can set closed_on with the same value on closing
                def force_updated_on_change
                  if @current_journal || changed?
                    self.updated_on = current_time_from_proper_timezone
                    if new_record?
                      self.created_on = updated_on
                    end
                  end
                end
                # Callback for setting closed_on when the issue is closed.
                # The closed_on attribute stores the time of the last closing
                # and is preserved when the issue is reopened.
                def update_closed_on
                  if closing?
                    self.closed_on = updated_on
                  end
                end
                # Saves the changes in a Journal
                # Called after_save
                def create_journal
                  if current_journal
                    current_journal.save
                  end
                end
                def send_notification
                  if Setting.notified_events.include?('issue_added')
                    Mailer.deliver_issue_add(self)
                  end
                end
                # Stores the previous assignee so we can still have access
                # to it during after_save callbacks (assigned_to_id_was is reset)
                def set_assigned_to_was
                  @previous_assigned_to_id = assigned_to_id_was
                end
                # Clears the previous assignee at the end of after_save callbacks
                def clear_assigned_to_was
                  @assigned_to_was = nil
                  @previous_assigned_to_id = nil
                end
              end

app/views/issues/_edit.html.erb +1 -1

              <%= labelled_form_for @issue, :html => {:id => 'issue-form', :multipart => true} do |f| %>
                  <%= error_messages_for 'issue', 'time_entry' %>
                  <%= render :partial => 'conflict' if @conflict %>
                  <div class="box">
-                 <% if @edit_allowed %>
+                 <% if @issue.attributes_editable? %>
                      <fieldset class="tabular"><legend><%= l(:label_change_properties) %></legend>
                      <div id="all_attributes">
                      <%= render :partial => 'form', :locals => {:f => f} %>
                      </div>
                      </fieldset>
                  <% end %>
                  <% if User.current.allowed_to?(:log_time, @project) %>
                      <fieldset class="tabular"><legend><%= l(:button_log_time) %></legend>
                      <%= labelled_fields_for :time_entry, @time_entry do |time_entry| %>
                      <div class="splitcontentleft">
                      <p><%= time_entry.text_field :hours, :size => 6, :label => :label_spent_time %> <%= l(:field_hours) %></p>
                      </div>
                      <div class="splitcontentright">
                      <p><%= time_entry.select :activity_id, activity_collection_for_select_options %></p>
                      </div>
                      <p><%= time_entry.text_field :comments, :size => 60 %></p>
                      <% @time_entry.custom_field_values.each do |value| %>
                        <p><%= custom_field_tag_with_label :time_entry, value %></p>
                      <% end %>
                      <% end %>
                  </fieldset>
                  <% end %>
                  <fieldset><legend><%= l(:field_notes) %></legend>
                  <%= f.text_area :notes, :cols => 60, :rows => 10, :class => 'wiki-edit', :no_label => true %>
                  <%= wikitoolbar_for 'issue_notes' %>
                  <% if @issue.safe_attribute? 'private_notes' %>
                  <%= f.check_box :private_notes, :no_label => true %> <label for="issue_private_notes"><%= l(:field_private_notes) %></label>
                  <% end %>
                  <%= call_hook(:view_issues_edit_notes_bottom, { :issue => @issue, :notes => @notes, :form => f }) %>
                  </fieldset>
                  <fieldset><legend><%= l(:label_attachment_plural) %></legend>
                  <p><%= render :partial => 'attachments/form', :locals => {:container => @issue} %></p>
                  </fieldset>
                  </div>
                  <%= f.hidden_field :lock_version %>
                  <%= hidden_field_tag 'last_journal_id', params[:last_journal_id] || @issue.last_journal_id %>
                  <%= submit_tag l(:button_submit) %>
                  <%= preview_link preview_edit_issue_path(:project_id => @project, :id => @issue), 'issue-form' %>
                  | <%= link_to l(:button_cancel), {}, :onclick => "$('#update').hide(); return false;" %>
              <% end %>
              <div id="preview" class="wiki"></div>

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