jro_apps/redmine Commit - r11996:99bf8c95aba2

Fixed that issue nested set update is triggered even if parent is not changed (#15135)....

Jean-Philippe Lang -

r11996:99bf8c95aba2

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r11996:99bf8c95aba2

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app/models/issue.rb +37 -28

              # Redmine - project management software
              # Copyright (C) 2006-2013  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
                belongs_to :project
                belongs_to :tracker
                belongs_to :status, :class_name => 'IssueStatus', :foreign_key => 'status_id'
                belongs_to :author, :class_name => 'User', :foreign_key => 'author_id'
                belongs_to :assigned_to, :class_name => 'Principal', :foreign_key => 'assigned_to_id'
                belongs_to :fixed_version, :class_name => 'Version', :foreign_key => 'fixed_version_id'
                belongs_to :priority, :class_name => 'IssuePriority', :foreign_key => 'priority_id'
                belongs_to :category, :class_name => 'IssueCategory', :foreign_key => 'category_id'
                has_many :journals, :as => :journalized, :dependent => :destroy
                has_many :visible_journals,
                  :class_name => 'Journal',
                  :as => :journalized,
                  :conditions => Proc.new {
                    ["(#{Journal.table_name}.private_notes = ? OR (#{Project.allowed_to_condition(User.current, :view_private_notes)}))", false]
                  },
                  :readonly => true
                has_many :time_entries, :dependent => :delete_all
                has_and_belongs_to_many :changesets, :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_nested_set :scope => 'root_id', :dependent => :destroy
                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", "#{Journal.table_name}.notes"],
                                   :include => [:project, :visible_journals],
                                   # sort by id so that limited eager loading doesn't break with postgresql
                                   :order_column => "#{table_name}.id"
                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 :find_options => {:include => [: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, :priority, :project, :tracker, :author, :status
                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
                scope :visible, lambda {|*args|
                  includes(:project).where(Issue.visible_condition(args.shift || User.current, *args))
                }
                scope :open, lambda {|*args|
                  is_closed = args.size > 0 ? !args.first : false
                  includes(: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 {
                  includes(:status, :project, :tracker).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
                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
                # 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.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)
                end
                def initialize(attributes=nil, *args)
                  super
                  if new_record?
                    # set default values for new records only
                    self.status ||= IssueStatus.default
                    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::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
                  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.all) : []
                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
                # Moves/copies an issue to a new project and tracker
                # Returns the moved/copied issue on success, false on failure
                def move_to_project(new_project, new_tracker=nil, options={})
                  ActiveSupport::Deprecation.warn "Issue#move_to_project is deprecated, use #project= instead."
                  if options[:copy]
                    issue = self.copy
                  else
                    issue = self
                  end
                  issue.init_journal(User.current, options[:notes])
                  # Preserve previous behaviour
                  # #move_to_project doesn't change tracker automatically
                  issue.send :project=, new_project, true
                  if new_tracker
                    issue.tracker = new_tracker
                  end
                  # Allow bulk setting of attributes on the issue
                  if options[:attributes]
                    issue.attributes = options[:attributes]
                  end
                  issue.save ? issue : false
                end
                def status_id=(sid)
                  self.status = nil
                  result = write_attribute(:status_id, sid)
                  @workflow_rule_by_attribute = nil
                  result
                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=(tid)
                  self.tracker = nil
                  result = write_attribute(:tracker_id, tid)
                  @custom_field_values = nil
                  @workflow_rule_by_attribute = nil
                  result
                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
                end
                def project=(project, keep_tracker=false)
                  project_was = self.project
                  write_attribute(:project_id, project ? project.id : nil)
                  association_instance_set('project', 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
                  end
                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 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?
                    elsif user.allowed_to?(:move_issues, issue.project)
                      Issue.allowed_target_projects_on_move.count > 1
                    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 'status_id',
                  'assigned_to_id',
                  'fixed_version_id',
                  'done_ratio',
                  'lock_version',
                  'notes',
                  :if => lambda {|issue, user| issue.new_statuses_allowed_to(user).any? }
                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 == user && 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)
                  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.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}
                    # TODO: use #select when ruby1.8 support is dropped
                    attrs['custom_field_values'] = attrs['custom_field_values'].reject {|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}
                    # TODO: use #select when ruby1.8 support is dropped
                    attrs['custom_fields'] = attrs['custom_fields'].reject {|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 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 : user_real.roles_for_project(project)
                  return {} if roles.empty?
                  result = {}
                  workflow_permissions = WorkflowPermission.where(:tracker_id => tracker_id, :old_status_id => status_id, :role_id => roles.map(&:id)).all
                  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 reopened? && 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 @parent_issue.root_id != root_id
                        # we can always move to another tree
                      elsif move_possible?(@parent_issue)
                        # move accepted inside tree
                      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?
                        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)
                  if new_record?
                    @current_journal.notify = false
                  else
                    @attributes_before_change = attributes.dup
                    @custom_values_before_change = {}
                    self.custom_field_values.each {|c| @custom_values_before_change.store c.custom_field_id, c.value }
                  end
                  @current_journal
                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_was && status_id_was.to_i > 0
                    @status_was ||= IssueStatus.find_by_id(status_id_was)
                  end
                end
                # Return true if the issue is closed, otherwise false
                def closed?
                  self.status.is_closed?
                end
                # Return true if the issue is being reopened
                def reopened?
                  if !new_record? && status_id_changed?
                    status_was = IssueStatus.find_by_id(status_id_was)
                    status_new = IssueStatus.find_by_id(status_id)
                    if status_was && status_new && status_was.is_closed? && !status_new.is_closed?
                      return true
                    end
                  end
                  false
                end
                # Return true if the issue is being closed
                def closing?
                  if !new_record? && status_id_changed?
                    if status_was && status && !status_was.is_closed? && status.is_closed?
                      return true
                    end
                  end
                  false
                end
                # Returns true if the issue is overdue
                def overdue?
                  !due_date.nil? && (due_date < Date.today) && !status.is_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
                  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.all
                  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 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
                    [IssueStatus.default, @copied_from.status].compact.uniq.sort
                  else
                    initial_status = nil
                    if new_record?
                      initial_status = IssueStatus.default
                    elsif status_id_was
                      initial_status = IssueStatus.find_by_id(status_id_was)
                    end
                    initial_status ||= status
                    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 = initial_status.find_new_statuses_allowed_to(
                      user.admin ? Role.all : user.roles_for_project(project),
                      tracker,
                      author == user,
                      assignee_transitions_allowed
                      )
                    statuses << initial_status unless statuses.empty?
                    statuses << IssueStatus.default if include_default
                    statuses = statuses.compact.uniq.sort
                    blocked? ? statuses.reject {|s| s.is_closed?} : statuses
                  end
                end
                def assigned_to_was
                  if assigned_to_id_changed? && assigned_to_id_was.present?
                    @assigned_to_was ||= User.find_by_id(assigned_to_id_was)
                  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.sum("#{TimeEntry.table_name}.hours",
                    :joins => "LEFT JOIN #{TimeEntry.table_name} ON #{TimeEntry.table_name}.issue_id = #{Issue.table_name}.id").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.includes(:issue_to => [:status, :project]).where(visible_condition(user)).where(:issue_from_id => issue_ids).all
                    # Relations with issue_to in given issues and visible issue_from
                    relations_to = IssueRelation.includes(:issue_from => [:status, :project]).where(visible_condition(user)).where(:issue_to_id => issue_ids).all
                    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]))
                    @parent_issue.id
+                   @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
                # 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
                # Extracted from the ReportsController.
                def self.by_tracker(project)
                  count_and_group_by(:project => project,
                                     :field => 'tracker_id',
                                     :joins => Tracker.table_name)
                end
                def self.by_version(project)
                  count_and_group_by(:project => project,
                                     :field => 'fixed_version_id',
                                     :joins => Version.table_name)
                end
                def self.by_priority(project)
                  count_and_group_by(:project => project,
                                     :field => 'priority_id',
                                     :joins => IssuePriority.table_name)
                end
                def self.by_category(project)
                  count_and_group_by(:project => project,
                                     :field => 'category_id',
                                     :joins => IssueCategory.table_name)
                end
                def self.by_assigned_to(project)
                  count_and_group_by(:project => project,
                                     :field => 'assigned_to_id',
                                     :joins => User.table_name)
                end
                def self.by_author(project)
                  count_and_group_by(:project => project,
                                     :field => 'author_id',
                                     :joins => User.table_name)
                end
                def self.by_subproject(project)
                  ActiveRecord::Base.connection.select_all("select    s.id as status_id,
                                                              s.is_closed as closed,
                                                              #{Issue.table_name}.project_id as project_id,
                                                              count(#{Issue.table_name}.id) as total
                                                            from
                                                              #{Issue.table_name}, #{Project.table_name}, #{IssueStatus.table_name} s
                                                            where
                                                              #{Issue.table_name}.status_id=s.id
                                                              and #{Issue.table_name}.project_id = #{Project.table_name}.id
                                                              and #{visible_condition(User.current, :project => project, :with_subprojects => true)}
                                                              and #{Issue.table_name}.project_id <> #{project.id}
                                                            group by s.id, s.is_closed, #{Issue.table_name}.project_id") if project.descendants.active.any?
                end
                # End ReportsController extraction
                # Returns a scope of projects that user can assign the issue to
                def allowed_target_projects(user=User.current)
                  if new_record?
                    Project.where(Project.allowed_to_condition(user, :add_issues))
                  else
                    self.class.allowed_target_projects_on_move(user)
                  end
                end
                # Returns a scope of projects that user can move issues to
                def self.allowed_target_projects_on_move(user=User.current)
                  Project.where(Project.allowed_to_condition(user, :move_issues))
                end
                private
                def after_project_change
                  # Update project_id on related time entries
                  TimeEntry.update_all(["project_id = ?", project_id], {:issue_id => 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
                    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)
                      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 root_id.nil?
                    # issue was just created
                    self.root_id = (@parent_issue.nil? ? id : @parent_issue.root_id)
                    set_default_left_and_right
                    Issue.update_all(["root_id = ?, lft = ?, rgt = ?", root_id, lft, rgt], ["id = ?", id])
                    if @parent_issue
                      move_to_child_of(@parent_issue)
                    end
                  elsif parent_issue_id != parent_id
-                   former_parent_id = parent_id
-                   # moving an existing issue
-                   if @parent_issue && @parent_issue.root_id == root_id
-                     # inside the same tree
+                   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
+                 # moving an existing issue
+                 if @parent_issue && @parent_issue.root_id == root_id
+                   # inside the same tree
+                   move_to_child_of(@parent_issue)
+                 else
+                   # to another tree
+                   unless root?
+                     move_to_right_of(root)
+                   end
+                   old_root_id = root_id
+                   self.root_id = (@parent_issue.nil? ? id : @parent_issue.root_id )
+                   target_maxright = nested_set_scope.maximum(right_column_name) || 0
+                   offset = target_maxright + 1 - lft
+                   Issue.update_all(["root_id = ?, lft = lft + ?, rgt = rgt + ?", root_id, offset, offset],
+                                     ["root_id = ? AND lft >= ? AND rgt <= ? ", old_root_id, lft, rgt])
+                   self[left_column_name] = lft + offset
+                   self[right_column_name] = rgt + offset
+                   if @parent_issue
                      move_to_child_of(@parent_issue)
-                   else
-                     # to another tree
-                     unless root?
-                       move_to_right_of(root)
-                     end
-                     old_root_id = root_id
-                     self.root_id = (@parent_issue.nil? ? id : @parent_issue.root_id )
-                     target_maxright = nested_set_scope.maximum(right_column_name) || 0
-                     offset = target_maxright + 1 - lft
-                     Issue.update_all(["root_id = ?, lft = lft + ?, rgt = rgt + ?", root_id, offset, offset],
-                                       ["root_id = ? AND lft >= ? AND rgt <= ? ", old_root_id, lft, rgt])
-                     self[left_column_name] = lft + offset
-                     self[right_column_name] = rgt + offset
-                     if @parent_issue
-                       move_to_child_of(@parent_issue)
-                     end
                    end
-                   # delete invalid relations of all descendants
-                   self_and_descendants.each do |issue|
-                     issue.relations.each do |relation|
-                       relation.destroy unless relation.valid?
-                     end
+                 end
+                 # delete invalid relations of all descendants
+                 self_and_descendants.each do |issue|
+                   issue.relations.each do |relation|
+                     relation.destroy unless relation.valid?
                    end
-                   # update former parent
-                   recalculate_attributes_for(former_parent_id) if former_parent_id
                  end
-                 remove_instance_variable(:@parent_issue) if instance_variable_defined?(:@parent_issue)
+                 # update former parent
+                 recalculate_attributes_for(former_parent_id) if former_parent_id
                end
                def update_parent_attributes
                  recalculate_attributes_for(parent_id) if parent_id
                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.maximum("#{IssuePriority.table_name}.position", :joins => :priority)
                      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.average(:estimated_hours).to_f
                        if average == 0
                          average = 1
                        end
                        done = p.leaves.sum("COALESCE(CASE WHEN estimated_hours > 0 THEN estimated_hours ELSE NULL END, #{average}) " +
              			"* (CASE WHEN is_closed = #{connection.quoted_true} THEN 100 ELSE COALESCE(done_ratio, 0) END)", :joins => :status).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.includes(: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(obj)
                  if @current_journal && !obj.new_record?
                    @current_journal.details << JournalDetail.new(:property => 'attachment', :prop_key => obj.id, :value => obj.filename)
                  end
                end
                # Callback on attachment deletion
                def attachment_removed(obj)
                  if @current_journal && !obj.new_record?
                    @current_journal.details << JournalDetail.new(:property => 'attachment', :prop_key => obj.id, :old_value => obj.filename)
                    @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 need 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? || (new_record? && closed?)
                    self.closed_on = updated_on
                  end
                end
                # Saves the changes in a Journal
                # Called after_save
                def create_journal
                  if @current_journal
                    # attributes changes
                    if @attributes_before_change
                      (Issue.column_names - %w(id root_id lft rgt lock_version created_on updated_on closed_on)).each {|c|
                        before = @attributes_before_change[c]
                        after = send(c)
                        next if before == after || (before.blank? && after.blank?)
                        @current_journal.details << JournalDetail.new(:property => 'attr',
                                                                      :prop_key => c,
                                                                      :old_value => before,
                                                                      :value => after)
                      }
                    end
                    if @custom_values_before_change
                      # custom fields changes
                      custom_field_values.each {|c|
                        before = @custom_values_before_change[c.custom_field_id]
                        after = c.value
                        next if before == after || (before.blank? && after.blank?)
                        if before.is_a?(Array) || after.is_a?(Array)
                          before = [before] unless before.is_a?(Array)
                          after = [after] unless after.is_a?(Array)
                          # values removed
                          (before - after).reject(&:blank?).each do |value|
                            @current_journal.details << JournalDetail.new(:property => 'cf',
                                                                          :prop_key => c.custom_field_id,
                                                                          :old_value => value,
                                                                          :value => nil)
                          end
                          # values added
                          (after - before).reject(&:blank?).each do |value|
                            @current_journal.details << JournalDetail.new(:property => 'cf',
                                                                          :prop_key => c.custom_field_id,
                                                                          :old_value => nil,
                                                                          :value => value)
                          end
                        else
                          @current_journal.details << JournalDetail.new(:property => 'cf',
                                                                        :prop_key => c.custom_field_id,
                                                                        :old_value => before,
                                                                        :value => after)
                        end
                      }
                    end
                    @current_journal.save
                    # reset current journal
                    init_journal @current_journal.user, @current_journal.notes
                  end
                end
                def send_notification
                  if Setting.notified_events.include?('issue_added')
                    Mailer.deliver_issue_add(self)
                  end
                end
                # Query generator for selecting groups of issue counts for a project
                # based on specific criteria
                #
                # Options
                # * project - Project to search in.
                # * field - String. Issue field to key off of in the grouping.
                # * joins - String. The table name to join against.
                def self.count_and_group_by(options)
                  project = options.delete(:project)
                  select_field = options.delete(:field)
                  joins = options.delete(:joins)
                  where = "#{Issue.table_name}.#{select_field}=j.id"
                  ActiveRecord::Base.connection.select_all("select    s.id as status_id,
                                                              s.is_closed as closed,
                                                              j.id as #{select_field},
                                                              count(#{Issue.table_name}.id) as total
                                                            from
                                                                #{Issue.table_name}, #{Project.table_name}, #{IssueStatus.table_name} s, #{joins} j
                                                            where
                                                              #{Issue.table_name}.status_id=s.id
                                                              and #{where}
                                                              and #{Issue.table_name}.project_id=#{Project.table_name}.id
                                                              and #{visible_condition(User.current, :project => project)}
                                                            group by s.id, s.is_closed, j.id")
                end
              end

test/unit/issue_nested_set_test.rb +35 0

              # Redmine - project management software
              # Copyright (C) 2006-2013  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.
              require File.expand_path('../../test_helper', __FILE__)
              class IssueNestedSetTest < ActiveSupport::TestCase
                fixtures :projects, :users, :roles,
                         :trackers, :projects_trackers,
                         :issue_statuses, :issue_categories, :issue_relations,
                         :enumerations,
                         :issues
                def test_create_root_issue
                  issue1 = Issue.generate!
                  issue2 = Issue.generate!
                  issue1.reload
                  issue2.reload
                  assert_equal [issue1.id, nil, 1, 2], [issue1.root_id, issue1.parent_id, issue1.lft, issue1.rgt]
                  assert_equal [issue2.id, nil, 1, 2], [issue2.root_id, issue2.parent_id, issue2.lft, issue2.rgt]
                end
                def test_create_child_issue
                  parent = Issue.generate!
                  child =  Issue.generate!(:parent_issue_id => parent.id)
                  parent.reload
                  child.reload
                  assert_equal [parent.id, nil, 1, 4], [parent.root_id, parent.parent_id, parent.lft, parent.rgt]
                  assert_equal [parent.id, parent.id, 2, 3], [child.root_id, child.parent_id, child.lft, child.rgt]
                end
                def test_creating_a_child_in_a_subproject_should_validate
                  issue = Issue.generate!
                  child = Issue.new(:project_id => 3, :tracker_id => 2, :author_id => 1,
                                    :subject => 'child', :parent_issue_id => issue.id)
                  assert_save child
                  assert_equal issue, child.reload.parent
                end
                def test_creating_a_child_in_an_invalid_project_should_not_validate
                  issue = Issue.generate!
                  child = Issue.new(:project_id => 2, :tracker_id => 1, :author_id => 1,
                                    :subject => 'child', :parent_issue_id => issue.id)
                  assert !child.save
                  assert_not_equal [], child.errors[:parent_issue_id]
                end
                def test_move_a_root_to_child
                  parent1 = Issue.generate!
                  parent2 = Issue.generate!
                  child = Issue.generate!(:parent_issue_id => parent1.id)
                  parent2.parent_issue_id = parent1.id
                  parent2.save!
                  child.reload
                  parent1.reload
                  parent2.reload
                  assert_equal [parent1.id, 1, 6], [parent1.root_id, parent1.lft, parent1.rgt]
                  assert_equal [parent1.id, 4, 5], [parent2.root_id, parent2.lft, parent2.rgt]
                  assert_equal [parent1.id, 2, 3], [child.root_id, child.lft, child.rgt]
                end
                def test_move_a_child_to_root
                  parent1 = Issue.generate!
                  parent2 = Issue.generate!
                  child =   Issue.generate!(:parent_issue_id => parent1.id)
                  child.parent_issue_id = nil
                  child.save!
                  child.reload
                  parent1.reload
                  parent2.reload
                  assert_equal [parent1.id, 1, 2], [parent1.root_id, parent1.lft, parent1.rgt]
                  assert_equal [parent2.id, 1, 2], [parent2.root_id, parent2.lft, parent2.rgt]
                  assert_equal [child.id, 1, 2], [child.root_id, child.lft, child.rgt]
                end
                def test_move_a_child_to_another_issue
                  parent1 = Issue.generate!
                  parent2 = Issue.generate!
                  child =   Issue.generate!(:parent_issue_id => parent1.id)
                  child.parent_issue_id = parent2.id
                  child.save!
                  child.reload
                  parent1.reload
                  parent2.reload
                  assert_equal [parent1.id, 1, 2], [parent1.root_id, parent1.lft, parent1.rgt]
                  assert_equal [parent2.id, 1, 4], [parent2.root_id, parent2.lft, parent2.rgt]
                  assert_equal [parent2.id, 2, 3], [child.root_id, child.lft, child.rgt]
                end
                def test_move_a_child_with_descendants_to_another_issue
                  parent1 = Issue.generate!
                  parent2 = Issue.generate!
                  child =   Issue.generate!(:parent_issue_id => parent1.id)
                  grandchild = Issue.generate!(:parent_issue_id => child.id)
                  parent1.reload
                  parent2.reload
                  child.reload
                  grandchild.reload
                  assert_equal [parent1.id, 1, 6], [parent1.root_id, parent1.lft, parent1.rgt]
                  assert_equal [parent2.id, 1, 2], [parent2.root_id, parent2.lft, parent2.rgt]
                  assert_equal [parent1.id, 2, 5], [child.root_id, child.lft, child.rgt]
                  assert_equal [parent1.id, 3, 4], [grandchild.root_id, grandchild.lft, grandchild.rgt]
                  child.reload.parent_issue_id = parent2.id
                  child.save!
                  child.reload
                  grandchild.reload
                  parent1.reload
                  parent2.reload
                  assert_equal [parent1.id, 1, 2], [parent1.root_id, parent1.lft, parent1.rgt]
                  assert_equal [parent2.id, 1, 6], [parent2.root_id, parent2.lft, parent2.rgt]
                  assert_equal [parent2.id, 2, 5], [child.root_id, child.lft, child.rgt]
                  assert_equal [parent2.id, 3, 4], [grandchild.root_id, grandchild.lft, grandchild.rgt]
                end
                def test_move_a_child_with_descendants_to_another_project
                  parent1 = Issue.generate!
                  child =   Issue.generate!(:parent_issue_id => parent1.id)
                  grandchild = Issue.generate!(:parent_issue_id => child.id)
                  child.reload
                  child.project = Project.find(2)
                  assert child.save
                  child.reload
                  grandchild.reload
                  parent1.reload
                  assert_equal [1, parent1.id, 1, 2], [parent1.project_id, parent1.root_id, parent1.lft, parent1.rgt]
                  assert_equal [2, child.id, 1, 4], [child.project_id, child.root_id, child.lft, child.rgt]
                  assert_equal [2, child.id, 2, 3], [grandchild.project_id, grandchild.root_id, grandchild.lft, grandchild.rgt]
                end
                def test_moving_an_issue_to_a_descendant_should_not_validate
                  parent1 = Issue.generate!
                  parent2 = Issue.generate!
                  child =   Issue.generate!(:parent_issue_id => parent1.id)
                  grandchild = Issue.generate!(:parent_issue_id => child.id)
                  child.reload
                  child.parent_issue_id = grandchild.id
                  assert !child.save
                  assert_not_equal [], child.errors[:parent_issue_id]
                end
+               def test_updating_a_root_issue_should_not_trigger_update_nested_set_attributes_on_parent_change
+                 issue = Issue.find(Issue.generate!.id)
+                 issue.parent_issue_id = ""
+                 issue.expects(:update_nested_set_attributes_on_parent_change).never
+                 issue.save!
+               end
+               def test_updating_a_child_issue_should_not_trigger_update_nested_set_attributes_on_parent_change
+                 issue = Issue.find(Issue.generate!(:parent_issue_id => 1).id)
+                 issue.parent_issue_id = "1"
+                 issue.expects(:update_nested_set_attributes_on_parent_change).never
+                 issue.save!
+               end
+               def test_moving_a_root_issue_should_trigger_update_nested_set_attributes_on_parent_change
+                 issue = Issue.find(Issue.generate!.id)
+                 issue.parent_issue_id = "1"
+                 issue.expects(:update_nested_set_attributes_on_parent_change).once
+                 issue.save!
+               end
+               def test_moving_a_child_issue_to_another_parent_should_trigger_update_nested_set_attributes_on_parent_change
+                 issue = Issue.find(Issue.generate!(:parent_issue_id => 1).id)
+                 issue.parent_issue_id = "2"
+                 issue.expects(:update_nested_set_attributes_on_parent_change).once
+                 issue.save!
+               end
+               def test_moving_a_child_issue_to_root_should_trigger_update_nested_set_attributes_on_parent_change
+                 issue = Issue.find(Issue.generate!(:parent_issue_id => 1).id)
+                 issue.parent_issue_id = ""
+                 issue.expects(:update_nested_set_attributes_on_parent_change).once
+                 issue.save!
+               end
                def test_destroy_should_destroy_children
                  issue1 = Issue.generate!
                  issue2 = Issue.generate!
                  issue3 = Issue.generate!(:parent_issue_id => issue2.id)
                  issue4 = Issue.generate!(:parent_issue_id => issue1.id)
                  issue3.init_journal(User.find(2))
                  issue3.subject = 'child with journal'
                  issue3.save!
                  assert_difference 'Issue.count', -2 do
                    assert_difference 'Journal.count', -1 do
                      assert_difference 'JournalDetail.count', -1 do
                        Issue.find(issue2.id).destroy
                      end
                    end
                  end
                  issue1.reload
                  issue4.reload
                  assert !Issue.exists?(issue2.id)
                  assert !Issue.exists?(issue3.id)
                  assert_equal [issue1.id, 1, 4], [issue1.root_id, issue1.lft, issue1.rgt]
                  assert_equal [issue1.id, 2, 3], [issue4.root_id, issue4.lft, issue4.rgt]
                end
                def test_destroy_child_should_update_parent
                  issue = Issue.generate!
                  child1 = Issue.generate!(:parent_issue_id => issue.id)
                  child2 = Issue.generate!(:parent_issue_id => issue.id)
                  issue.reload
                  assert_equal [issue.id, 1, 6], [issue.root_id, issue.lft, issue.rgt]
                  child2.reload.destroy
                  issue.reload
                  assert_equal [issue.id, 1, 4], [issue.root_id, issue.lft, issue.rgt]
                end
                def test_destroy_parent_issue_updated_during_children_destroy
                  parent = Issue.generate!
                  Issue.generate!(:start_date => Date.today, :parent_issue_id => parent.id)
                  Issue.generate!(:start_date => 2.days.from_now, :parent_issue_id => parent.id)
                  assert_difference 'Issue.count', -3 do
                    Issue.find(parent.id).destroy
                  end
                end
                def test_destroy_child_issue_with_children
                  root = Issue.create!(:project_id => 1, :author_id => 2, :tracker_id => 1, :subject => 'root')
                  child = Issue.create!(:project_id => 1, :author_id => 2, :tracker_id => 1, :subject => 'child', :parent_issue_id => root.id)
                  leaf = Issue.create!(:project_id => 1, :author_id => 2, :tracker_id => 1, :subject => 'leaf', :parent_issue_id => child.id)
                  leaf.init_journal(User.find(2))
                  leaf.subject = 'leaf with journal'
                  leaf.save!
                  assert_difference 'Issue.count', -2 do
                    assert_difference 'Journal.count', -1 do
                      assert_difference 'JournalDetail.count', -1 do
                        Issue.find(child.id).destroy
                      end
                    end
                  end
                  root = Issue.find(root.id)
                  assert root.leaf?, "Root issue is not a leaf (lft: #{root.lft}, rgt: #{root.rgt})"
                end
                def test_destroy_issue_with_grand_child
                  parent = Issue.generate!
                  issue = Issue.generate!(:parent_issue_id => parent.id)
                  child = Issue.generate!(:parent_issue_id => issue.id)
                  grandchild1 = Issue.generate!(:parent_issue_id => child.id)
                  grandchild2 = Issue.generate!(:parent_issue_id => child.id)
                  assert_difference 'Issue.count', -4 do
                    Issue.find(issue.id).destroy
                    parent.reload
                    assert_equal [1, 2], [parent.lft, parent.rgt]
                  end
                end
                def test_parent_priority_should_be_the_highest_child_priority
                  parent = Issue.generate!(:priority => IssuePriority.find_by_name('Normal'))
                  # Create children
                  child1 = Issue.generate!(:priority => IssuePriority.find_by_name('High'), :parent_issue_id => parent.id)
                  assert_equal 'High', parent.reload.priority.name
                  child2 = Issue.generate!(:priority => IssuePriority.find_by_name('Immediate'), :parent_issue_id => child1.id)
                  assert_equal 'Immediate', child1.reload.priority.name
                  assert_equal 'Immediate', parent.reload.priority.name
                  child3 = Issue.generate!(:priority => IssuePriority.find_by_name('Low'), :parent_issue_id => parent.id)
                  assert_equal 'Immediate', parent.reload.priority.name
                  # Destroy a child
                  child1.destroy
                  assert_equal 'Low', parent.reload.priority.name
                  # Update a child
                  child3.reload.priority = IssuePriority.find_by_name('Normal')
                  child3.save!
                  assert_equal 'Normal', parent.reload.priority.name
                end
                def test_parent_dates_should_be_lowest_start_and_highest_due_dates
                  parent = Issue.generate!
                  Issue.generate!(:start_date => '2010-01-25', :due_date => '2010-02-15', :parent_issue_id => parent.id)
                  Issue.generate!(                             :due_date => '2010-02-13', :parent_issue_id => parent.id)
                  Issue.generate!(:start_date => '2010-02-01', :due_date => '2010-02-22', :parent_issue_id => parent.id)
                  parent.reload
                  assert_equal Date.parse('2010-01-25'), parent.start_date
                  assert_equal Date.parse('2010-02-22'), parent.due_date
                end
                def test_parent_done_ratio_should_be_average_done_ratio_of_leaves
                  parent = Issue.generate!
                  Issue.generate!(:done_ratio => 20, :parent_issue_id => parent.id)
                  assert_equal 20, parent.reload.done_ratio
                  Issue.generate!(:done_ratio => 70, :parent_issue_id => parent.id)
                  assert_equal 45, parent.reload.done_ratio
                  child = Issue.generate!(:done_ratio => 0, :parent_issue_id => parent.id)
                  assert_equal 30, parent.reload.done_ratio
                  Issue.generate!(:done_ratio => 30, :parent_issue_id => child.id)
                  assert_equal 30, child.reload.done_ratio
                  assert_equal 40, parent.reload.done_ratio
                end
                def test_parent_done_ratio_should_be_weighted_by_estimated_times_if_any
                  parent = Issue.generate!
                  Issue.generate!(:estimated_hours => 10, :done_ratio => 20, :parent_issue_id => parent.id)
                  assert_equal 20, parent.reload.done_ratio
                  Issue.generate!(:estimated_hours => 20, :done_ratio => 50, :parent_issue_id => parent.id)
                  assert_equal (50 * 20 + 20 * 10) / 30, parent.reload.done_ratio
                end
                def test_parent_done_ratio_with_child_estimate_to_0_should_reach_100
                  parent = Issue.generate!
                  issue1 = Issue.generate!(:parent_issue_id => parent.id)
                  issue2 = Issue.generate!(:parent_issue_id => parent.id, :estimated_hours => 0)
                  assert_equal 0, parent.reload.done_ratio
                  issue1.reload.update_attribute :status_id, 5
                  assert_equal 50, parent.reload.done_ratio
                  issue2.reload.update_attribute :status_id, 5
                  assert_equal 100, parent.reload.done_ratio
                end
                def test_parent_estimate_should_be_sum_of_leaves
                  parent = Issue.generate!
                  Issue.generate!(:estimated_hours => nil, :parent_issue_id => parent.id)
                  assert_equal nil, parent.reload.estimated_hours
                  Issue.generate!(:estimated_hours => 5, :parent_issue_id => parent.id)
                  assert_equal 5, parent.reload.estimated_hours
                  Issue.generate!(:estimated_hours => 7, :parent_issue_id => parent.id)
                  assert_equal 12, parent.reload.estimated_hours
                end
                def test_move_parent_updates_old_parent_attributes
                  first_parent = Issue.generate!
                  second_parent = Issue.generate!
                  child = Issue.generate!(:estimated_hours => 5, :parent_issue_id => first_parent.id)
                  assert_equal 5, first_parent.reload.estimated_hours
                  child.update_attributes(:estimated_hours => 7, :parent_issue_id => second_parent.id)
                  assert_equal 7, second_parent.reload.estimated_hours
                  assert_nil first_parent.reload.estimated_hours
                end
                def test_reschuling_a_parent_should_reschedule_subtasks
                  parent = Issue.generate!
                  c1 = Issue.generate!(:start_date => '2010-05-12', :due_date => '2010-05-18', :parent_issue_id => parent.id)
                  c2 = Issue.generate!(:start_date => '2010-06-03', :due_date => '2010-06-10', :parent_issue_id => parent.id)
                  parent.reload
                  parent.reschedule_on!(Date.parse('2010-06-02'))
                  c1.reload
                  assert_equal [Date.parse('2010-06-02'), Date.parse('2010-06-08')], [c1.start_date, c1.due_date]
                  c2.reload
                  assert_equal [Date.parse('2010-06-03'), Date.parse('2010-06-10')], [c2.start_date, c2.due_date] # no change
                  parent.reload
                  assert_equal [Date.parse('2010-06-02'), Date.parse('2010-06-10')], [parent.start_date, parent.due_date]
                end
                def test_project_copy_should_copy_issue_tree
                  p = Project.create!(:name => 'Tree copy', :identifier => 'tree-copy', :tracker_ids => [1, 2])
                  i1 = Issue.generate!(:project => p, :subject => 'i1')
                  i2 = Issue.generate!(:project => p, :subject => 'i2', :parent_issue_id => i1.id)
                  i3 = Issue.generate!(:project => p, :subject => 'i3', :parent_issue_id => i1.id)
                  i4 = Issue.generate!(:project => p, :subject => 'i4', :parent_issue_id => i2.id)
                  i5 = Issue.generate!(:project => p, :subject => 'i5')
                  c = Project.new(:name => 'Copy', :identifier => 'copy', :tracker_ids => [1, 2])
                  c.copy(p, :only => 'issues')
                  c.reload
                  assert_equal 5, c.issues.count
                  ic1, ic2, ic3, ic4, ic5 = c.issues.order('subject').all
                  assert ic1.root?
                  assert_equal ic1, ic2.parent
                  assert_equal ic1, ic3.parent
                  assert_equal ic2, ic4.parent
                  assert ic5.root?
                end
              end

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