jro_apps/redmine Commit - r4460:df9ea2413605

Makes Version#start_date return the minimum start_date of its issues....

Jean-Philippe Lang -

r4460:df9ea2413605

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r4460:df9ea2413605

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app/models/project.rb +1 -1

             # redMine - project management software
             # Copyright (C) 2006  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 Project < ActiveRecord::Base
               include Redmine::SafeAttributes
               # Project statuses
               STATUS_ACTIVE     = 1
               STATUS_ARCHIVED   = 9
               # Maximum length for project identifiers
               IDENTIFIER_MAX_LENGTH = 100
               # Specific overidden Activities
               has_many :time_entry_activities
               has_many :members, :include => [:user, :roles], :conditions => "#{User.table_name}.type='User' AND #{User.table_name}.status=#{User::STATUS_ACTIVE}"
               has_many :memberships, :class_name => 'Member'
               has_many :member_principals, :class_name => 'Member',
                                            :include => :principal,
                                            :conditions => "#{Principal.table_name}.type='Group' OR (#{Principal.table_name}.type='User' AND #{Principal.table_name}.status=#{User::STATUS_ACTIVE})"
               has_many :users, :through => :members
               has_many :principals, :through => :member_principals, :source => :principal
               has_many :enabled_modules, :dependent => :delete_all
               has_and_belongs_to_many :trackers, :order => "#{Tracker.table_name}.position"
               has_many :issues, :dependent => :destroy, :order => "#{Issue.table_name}.created_on DESC", :include => [:status, :tracker]
               has_many :issue_changes, :through => :issues, :source => :journals
               has_many :versions, :dependent => :destroy, :order => "#{Version.table_name}.effective_date DESC, #{Version.table_name}.name DESC"
               has_many :time_entries, :dependent => :delete_all
               has_many :queries, :dependent => :delete_all
               has_many :documents, :dependent => :destroy
               has_many :news, :dependent => :delete_all, :include => :author
               has_many :issue_categories, :dependent => :delete_all, :order => "#{IssueCategory.table_name}.name"
               has_many :boards, :dependent => :destroy, :order => "position ASC"
               has_one :repository, :dependent => :destroy
               has_many :changesets, :through => :repository
               has_one :wiki, :dependent => :destroy
               # Custom field for the project issues
               has_and_belongs_to_many :issue_custom_fields,
                                       :class_name => 'IssueCustomField',
                                       :order => "#{CustomField.table_name}.position",
                                       :join_table => "#{table_name_prefix}custom_fields_projects#{table_name_suffix}",
                                       :association_foreign_key => 'custom_field_id'
               acts_as_nested_set :order => 'name'
               acts_as_attachable :view_permission => :view_files,
                                  :delete_permission => :manage_files
               acts_as_customizable
               acts_as_searchable :columns => ['name', 'identifier', 'description'], :project_key => 'id', :permission => nil
               acts_as_event :title => Proc.new {|o| "#{l(:label_project)}: #{o.name}"},
                             :url => Proc.new {|o| {:controller => 'projects', :action => 'show', :id => o}},
                             :author => nil
               attr_protected :status, :enabled_module_names
               validates_presence_of :name, :identifier
               validates_uniqueness_of :identifier
               validates_associated :repository, :wiki
               validates_length_of :name, :maximum => 255
               validates_length_of :homepage, :maximum => 255
               validates_length_of :identifier, :in => 1..IDENTIFIER_MAX_LENGTH
               # donwcase letters, digits, dashes but not digits only
               validates_format_of :identifier, :with => /^(?!\d+$)[a-z0-9\-]*$/, :if => Proc.new { |p| p.identifier_changed? }
               # reserved words
               validates_exclusion_of :identifier, :in => %w( new )
               before_destroy :delete_all_members, :destroy_children
               named_scope :has_module, lambda { |mod| { :conditions => ["#{Project.table_name}.id IN (SELECT em.project_id FROM #{EnabledModule.table_name} em WHERE em.name=?)", mod.to_s] } }
               named_scope :active, { :conditions => "#{Project.table_name}.status = #{STATUS_ACTIVE}"}
               named_scope :all_public, { :conditions => { :is_public => true } }
               named_scope :visible, lambda { { :conditions => Project.visible_by(User.current) } }
               def initialize(attributes = nil)
                 super
                 initialized = (attributes || {}).stringify_keys
                 if !initialized.key?('identifier') && Setting.sequential_project_identifiers?
                   self.identifier = Project.next_identifier
                 end
                 if !initialized.key?('is_public')
                   self.is_public = Setting.default_projects_public?
                 end
                 if !initialized.key?('enabled_module_names')
                   self.enabled_module_names = Setting.default_projects_modules
                 end
                 if !initialized.key?('trackers') && !initialized.key?('tracker_ids')
                   self.trackers = Tracker.all
                 end
               end
               def identifier=(identifier)
                 super unless identifier_frozen?
               end
               def identifier_frozen?
                 errors[:identifier].nil? && !(new_record? || identifier.blank?)
               end
               # returns latest created projects
               # non public projects will be returned only if user is a member of those
               def self.latest(user=nil, count=5)
                 find(:all, :limit => count, :conditions => visible_by(user), :order => "created_on DESC")
               end
               # Returns a SQL :conditions string used to find all active projects for the specified user.
               #
               # Examples:
               #     Projects.visible_by(admin)        => "projects.status = 1"
               #     Projects.visible_by(normal_user)  => "projects.status = 1 AND projects.is_public = 1"
               def self.visible_by(user=nil)
                 user ||= User.current
                 if user && user.admin?
                   return "#{Project.table_name}.status=#{Project::STATUS_ACTIVE}"
                 elsif user && user.memberships.any?
                   return "#{Project.table_name}.status=#{Project::STATUS_ACTIVE} AND (#{Project.table_name}.is_public = #{connection.quoted_true} or #{Project.table_name}.id IN (#{user.memberships.collect{|m| m.project_id}.join(',')}))"
                 else
                   return "#{Project.table_name}.status=#{Project::STATUS_ACTIVE} AND #{Project.table_name}.is_public = #{connection.quoted_true}"
                 end
               end
               def self.allowed_to_condition(user, permission, options={})
                 statements = []
                 base_statement = "#{Project.table_name}.status=#{Project::STATUS_ACTIVE}"
                 if perm = Redmine::AccessControl.permission(permission)
                   unless perm.project_module.nil?
                     # If the permission belongs to a project module, make sure the module is enabled
                     base_statement << " AND #{Project.table_name}.id IN (SELECT em.project_id FROM #{EnabledModule.table_name} em WHERE em.name='#{perm.project_module}')"
                   end
                 end
                 if options[:project]
                   project_statement = "#{Project.table_name}.id = #{options[:project].id}"
                   project_statement << " OR (#{Project.table_name}.lft > #{options[:project].lft} AND #{Project.table_name}.rgt < #{options[:project].rgt})" if options[:with_subprojects]
                   base_statement = "(#{project_statement}) AND (#{base_statement})"
                 end
                 if user.admin?
                   # no restriction
                 else
                   statements << "1=0"
                   if user.logged?
                     if Role.non_member.allowed_to?(permission) && !options[:member]
                       statements << "#{Project.table_name}.is_public = #{connection.quoted_true}"
                     end
                     allowed_project_ids = user.memberships.select {|m| m.roles.detect {|role| role.allowed_to?(permission)}}.collect {|m| m.project_id}
                     statements << "#{Project.table_name}.id IN (#{allowed_project_ids.join(',')})" if allowed_project_ids.any?
                   else
                     if Role.anonymous.allowed_to?(permission) && !options[:member]
                       # anonymous user allowed on public project
                       statements << "#{Project.table_name}.is_public = #{connection.quoted_true}"
                     end
                   end
                 end
                 statements.empty? ? base_statement : "((#{base_statement}) AND (#{statements.join(' OR ')}))"
               end
               # Returns the Systemwide and project specific activities
               def activities(include_inactive=false)
                 if include_inactive
                   return all_activities
                 else
                   return active_activities
                 end
               end
               # Will create a new Project specific Activity or update an existing one
               #
               # This will raise a ActiveRecord::Rollback if the TimeEntryActivity
               # does not successfully save.
               def update_or_create_time_entry_activity(id, activity_hash)
                 if activity_hash.respond_to?(:has_key?) && activity_hash.has_key?('parent_id')
                   self.create_time_entry_activity_if_needed(activity_hash)
                 else
                   activity = project.time_entry_activities.find_by_id(id.to_i)
                   activity.update_attributes(activity_hash) if activity
                 end
               end
               # Create a new TimeEntryActivity if it overrides a system TimeEntryActivity
               #
               # This will raise a ActiveRecord::Rollback if the TimeEntryActivity
               # does not successfully save.
               def create_time_entry_activity_if_needed(activity)
                 if activity['parent_id']
                   parent_activity = TimeEntryActivity.find(activity['parent_id'])
                   activity['name'] = parent_activity.name
                   activity['position'] = parent_activity.position
                   if Enumeration.overridding_change?(activity, parent_activity)
                     project_activity = self.time_entry_activities.create(activity)
                     if project_activity.new_record?
                       raise ActiveRecord::Rollback, "Overridding TimeEntryActivity was not successfully saved"
                     else
                       self.time_entries.update_all("activity_id = #{project_activity.id}", ["activity_id = ?", parent_activity.id])
                     end
                   end
                 end
               end
               # Returns a :conditions SQL string that can be used to find the issues associated with this project.
               #
               # Examples:
               #   project.project_condition(true)  => "(projects.id = 1 OR (projects.lft > 1 AND projects.rgt < 10))"
               #   project.project_condition(false) => "projects.id = 1"
               def project_condition(with_subprojects)
                 cond = "#{Project.table_name}.id = #{id}"
                 cond = "(#{cond} OR (#{Project.table_name}.lft > #{lft} AND #{Project.table_name}.rgt < #{rgt}))" if with_subprojects
                 cond
               end
               def self.find(*args)
                 if args.first && args.first.is_a?(String) && !args.first.match(/^\d*$/)
                   project = find_by_identifier(*args)
                   raise ActiveRecord::RecordNotFound, "Couldn't find Project with identifier=#{args.first}" if project.nil?
                   project
                 else
                   super
                 end
               end
               def to_param
                 # id is used for projects with a numeric identifier (compatibility)
                 @to_param ||= (identifier.to_s =~ %r{^\d*$} ? id : identifier)
               end
               def active?
                 self.status == STATUS_ACTIVE
               end
               def archived?
                 self.status == STATUS_ARCHIVED
               end
               # Archives the project and its descendants
               def archive
                 # Check that there is no issue of a non descendant project that is assigned
                 # to one of the project or descendant versions
                 v_ids = self_and_descendants.collect {|p| p.version_ids}.flatten
                 if v_ids.any? && Issue.find(:first, :include => :project,
                                                     :conditions => ["(#{Project.table_name}.lft < ? OR #{Project.table_name}.rgt > ?)" +
                                                                     " AND #{Issue.table_name}.fixed_version_id IN (?)", lft, rgt, v_ids])
                   return false
                 end
                 Project.transaction do
                   archive!
                 end
                 true
               end
               # Unarchives the project
               # All its ancestors must be active
               def unarchive
                 return false if ancestors.detect {|a| !a.active?}
                 update_attribute :status, STATUS_ACTIVE
               end
               # Returns an array of projects the project can be moved to
               # by the current user
               def allowed_parents
                 return @allowed_parents if @allowed_parents
                 @allowed_parents = Project.find(:all, :conditions => Project.allowed_to_condition(User.current, :add_subprojects))
                 @allowed_parents = @allowed_parents - self_and_descendants
                 if User.current.allowed_to?(:add_project, nil, :global => true) || (!new_record? && parent.nil?)
                   @allowed_parents << nil
                 end
                 unless parent.nil? || @allowed_parents.empty? || @allowed_parents.include?(parent)
                   @allowed_parents << parent
                 end
                 @allowed_parents
               end
               # Sets the parent of the project with authorization check
               def set_allowed_parent!(p)
                 unless p.nil? || p.is_a?(Project)
                   if p.to_s.blank?
                     p = nil
                   else
                     p = Project.find_by_id(p)
                     return false unless p
                   end
                 end
                 if p.nil?
                   if !new_record? && allowed_parents.empty?
                     return false
                   end
                 elsif !allowed_parents.include?(p)
                   return false
                 end
                 set_parent!(p)
               end
               # Sets the parent of the project
               # Argument can be either a Project, a String, a Fixnum or nil
               def set_parent!(p)
                 unless p.nil? || p.is_a?(Project)
                   if p.to_s.blank?
                     p = nil
                   else
                     p = Project.find_by_id(p)
                     return false unless p
                   end
                 end
                 if p == parent && !p.nil?
                   # Nothing to do
                   true
                 elsif p.nil? || (p.active? && move_possible?(p))
                   # Insert the project so that target's children or root projects stay alphabetically sorted
                   sibs = (p.nil? ? self.class.roots : p.children)
                   to_be_inserted_before = sibs.detect {|c| c.name.to_s.downcase > name.to_s.downcase }
                   if to_be_inserted_before
                     move_to_left_of(to_be_inserted_before)
                   elsif p.nil?
                     if sibs.empty?
                       # move_to_root adds the project in first (ie. left) position
                       move_to_root
                     else
                       move_to_right_of(sibs.last) unless self == sibs.last
                     end
                   else
                     # move_to_child_of adds the project in last (ie.right) position
                     move_to_child_of(p)
                   end
                   Issue.update_versions_from_hierarchy_change(self)
                   true
                 else
                   # Can not move to the given target
                   false
                 end
               end
               # Returns an array of the trackers used by the project and its active sub projects
               def rolled_up_trackers
                 @rolled_up_trackers ||=
                   Tracker.find(:all, :include => :projects,
                                      :select => "DISTINCT #{Tracker.table_name}.*",
                                      :conditions => ["#{Project.table_name}.lft >= ? AND #{Project.table_name}.rgt <= ? AND #{Project.table_name}.status = #{STATUS_ACTIVE}", lft, rgt],
                                      :order => "#{Tracker.table_name}.position")
               end
               # Closes open and locked project versions that are completed
               def close_completed_versions
                 Version.transaction do
                   versions.find(:all, :conditions => {:status => %w(open locked)}).each do |version|
                     if version.completed?
                       version.update_attribute(:status, 'closed')
                     end
                   end
                 end
               end
               # Returns a scope of the Versions on subprojects
               def rolled_up_versions
                 @rolled_up_versions ||=
                   Version.scoped(:include => :project,
                                  :conditions => ["#{Project.table_name}.lft >= ? AND #{Project.table_name}.rgt <= ? AND #{Project.table_name}.status = #{STATUS_ACTIVE}", lft, rgt])
               end
               # Returns a scope of the Versions used by the project
               def shared_versions
                 @shared_versions ||=
                   Version.scoped(:include => :project,
                                  :conditions => "#{Project.table_name}.id = #{id}" +
                                                 " OR (#{Project.table_name}.status = #{Project::STATUS_ACTIVE} AND (" +
                                                       " #{Version.table_name}.sharing = 'system'" +
                                                       " OR (#{Project.table_name}.lft >= #{root.lft} AND #{Project.table_name}.rgt <= #{root.rgt} AND #{Version.table_name}.sharing = 'tree')" +
                                                       " OR (#{Project.table_name}.lft < #{lft} AND #{Project.table_name}.rgt > #{rgt} AND #{Version.table_name}.sharing IN ('hierarchy', 'descendants'))" +
                                                       " OR (#{Project.table_name}.lft > #{lft} AND #{Project.table_name}.rgt < #{rgt} AND #{Version.table_name}.sharing = 'hierarchy')" +
                                                       "))")
               end
               # Returns a hash of project users grouped by role
               def users_by_role
                 members.find(:all, :include => [:user, :roles]).inject({}) do |h, m|
                   m.roles.each do |r|
                     h[r] ||= []
                     h[r] << m.user
                   end
                   h
                 end
               end
               # Deletes all project's members
               def delete_all_members
                 me, mr = Member.table_name, MemberRole.table_name
                 connection.delete("DELETE FROM #{mr} WHERE #{mr}.member_id IN (SELECT #{me}.id FROM #{me} WHERE #{me}.project_id = #{id})")
                 Member.delete_all(['project_id = ?', id])
               end
               # Users issues can be assigned to
               def assignable_users
                 members.select {|m| m.roles.detect {|role| role.assignable?}}.collect {|m| m.user}.sort
               end
               # Returns the mail adresses of users that should be always notified on project events
               def recipients
                 notified_users.collect {|user| user.mail}
               end
               # Returns the users that should be notified on project events
               def notified_users
                 # TODO: User part should be extracted to User#notify_about?
                 members.select {|m| m.mail_notification? || m.user.mail_notification == 'all'}.collect {|m| m.user}
               end
               # Returns an array of all custom fields enabled for project issues
               # (explictly associated custom fields and custom fields enabled for all projects)
               def all_issue_custom_fields
                 @all_issue_custom_fields ||= (IssueCustomField.for_all + issue_custom_fields).uniq.sort
               end
               def project
                 self
               end
               def <=>(project)
                 name.downcase <=> project.name.downcase
               end
               def to_s
                 name
               end
               # Returns a short description of the projects (first lines)
               def short_description(length = 255)
                 description.gsub(/^(.{#{length}}[^\n\r]*).*$/m, '\1...').strip if description
               end
               def css_classes
                 s = 'project'
                 s << ' root' if root?
                 s << ' child' if child?
                 s << (leaf? ? ' leaf' : ' parent')
                 s
               end
               # The earliest start date of a project, based on it's issues and versions
               def start_date
                 [
                  issues.minimum('start_date'),
                  shared_versions.collect(&:effective_date),
-                 shared_versions.collect {|v| v.fixed_issues.minimum('start_date')}
+                 shared_versions.collect(&:start_date)
                 ].flatten.compact.min
               end
               # The latest due date of an issue or version
               def due_date
                 [
                  issues.maximum('due_date'),
                  shared_versions.collect(&:effective_date),
                  shared_versions.collect {|v| v.fixed_issues.maximum('due_date')}
                 ].flatten.compact.max
               end
               def overdue?
                 active? && !due_date.nil? && (due_date < Date.today)
               end
               # Returns the percent completed for this project, based on the
               # progress on it's versions.
               def completed_percent(options={:include_subprojects => false})
                 if options.delete(:include_subprojects)
                   total = self_and_descendants.collect(&:completed_percent).sum
                   total / self_and_descendants.count
                 else
                   if versions.count > 0
                     total = versions.collect(&:completed_pourcent).sum
                     total / versions.count
                   else
                   end
                 end
               end
               # Return true if this project is allowed to do the specified action.
               # action can be:
               # * a parameter-like Hash (eg. :controller => 'projects', :action => 'edit')
               # * a permission Symbol (eg. :edit_project)
               def allows_to?(action)
                 if action.is_a? Hash
                   allowed_actions.include? "#{action[:controller]}/#{action[:action]}"
                 else
                   allowed_permissions.include? action
                 end
               end
               def module_enabled?(module_name)
                 module_name = module_name.to_s
                 enabled_modules.detect {|m| m.name == module_name}
               end
               def enabled_module_names=(module_names)
                 if module_names && module_names.is_a?(Array)
                   module_names = module_names.collect(&:to_s).reject(&:blank?)
                   # remove disabled modules
                   enabled_modules.each {|mod| mod.destroy unless module_names.include?(mod.name)}
                   # add new modules
                   module_names.reject {|name| module_enabled?(name)}.each {|name| enabled_modules << EnabledModule.new(:name => name)}
                 else
                   enabled_modules.clear
                 end
               end
               # Returns an array of the enabled modules names
               def enabled_module_names
                 enabled_modules.collect(&:name)
               end
               safe_attributes 'name',
                 'description',
                 'homepage',
                 'is_public',
                 'identifier',
                 'custom_field_values',
                 'custom_fields',
                 'tracker_ids',
                 'issue_custom_field_ids'
               # Returns an array of projects that are in this project's hierarchy
               #
               # Example: parents, children, siblings
               def hierarchy
                 parents = project.self_and_ancestors || []
                 descendants = project.descendants || []
                 project_hierarchy = parents | descendants # Set union
               end
               # Returns an auto-generated project identifier based on the last identifier used
               def self.next_identifier
                 p = Project.find(:first, :order => 'created_on DESC')
                 p.nil? ? nil : p.identifier.to_s.succ
               end
               # Copies and saves the Project instance based on the +project+.
               # Duplicates the source project's:
               # * Wiki
               # * Versions
               # * Categories
               # * Issues
               # * Members
               # * Queries
               #
               # Accepts an +options+ argument to specify what to copy
               #
               # Examples:
               #   project.copy(1)                                    # => copies everything
               #   project.copy(1, :only => 'members')                # => copies members only
               #   project.copy(1, :only => ['members', 'versions'])  # => copies members and versions
               def copy(project, options={})
                 project = project.is_a?(Project) ? project : Project.find(project)
                 to_be_copied = %w(wiki versions issue_categories issues members queries boards)
                 to_be_copied = to_be_copied & options[:only].to_a unless options[:only].nil?
                 Project.transaction do
                   if save
                     reload
                     to_be_copied.each do |name|
                       send "copy_#{name}", project
                     end
                     Redmine::Hook.call_hook(:model_project_copy_before_save, :source_project => project, :destination_project => self)
                     save
                   end
                 end
               end
               # Copies +project+ and returns the new instance.  This will not save
               # the copy
               def self.copy_from(project)
                 begin
                   project = project.is_a?(Project) ? project : Project.find(project)
                   if project
                     # clear unique attributes
                     attributes = project.attributes.dup.except('id', 'name', 'identifier', 'status', 'parent_id', 'lft', 'rgt')
                     copy = Project.new(attributes)
                     copy.enabled_modules = project.enabled_modules
                     copy.trackers = project.trackers
                     copy.custom_values = project.custom_values.collect {|v| v.clone}
                     copy.issue_custom_fields = project.issue_custom_fields
                     return copy
                   else
                     return nil
                   end
                 rescue ActiveRecord::RecordNotFound
                   return nil
                 end
               end
               # Yields the given block for each project with its level in the tree
               def self.project_tree(projects, &block)
                 ancestors = []
                 projects.sort_by(&:lft).each do |project|
                   while (ancestors.any? && !project.is_descendant_of?(ancestors.last))
                     ancestors.pop
                   end
                   yield project, ancestors.size
                   ancestors << project
                 end
               end
               private
               # Destroys children before destroying self
               def destroy_children
                 children.each do |child|
                   child.destroy
                 end
               end
               # Copies wiki from +project+
               def copy_wiki(project)
                 # Check that the source project has a wiki first
                 unless project.wiki.nil?
                   self.wiki ||= Wiki.new
                   wiki.attributes = project.wiki.attributes.dup.except("id", "project_id")
                   wiki_pages_map = {}
                   project.wiki.pages.each do |page|
                     # Skip pages without content
                     next if page.content.nil?
                     new_wiki_content = WikiContent.new(page.content.attributes.dup.except("id", "page_id", "updated_on"))
                     new_wiki_page = WikiPage.new(page.attributes.dup.except("id", "wiki_id", "created_on", "parent_id"))
                     new_wiki_page.content = new_wiki_content
                     wiki.pages << new_wiki_page
                     wiki_pages_map[page.id] = new_wiki_page
                   end
                   wiki.save
                   # Reproduce page hierarchy
                   project.wiki.pages.each do |page|
                     if page.parent_id && wiki_pages_map[page.id]
                       wiki_pages_map[page.id].parent = wiki_pages_map[page.parent_id]
                       wiki_pages_map[page.id].save
                     end
                   end
                 end
               end
               # Copies versions from +project+
               def copy_versions(project)
                 project.versions.each do |version|
                   new_version = Version.new
                   new_version.attributes = version.attributes.dup.except("id", "project_id", "created_on", "updated_on")
                   self.versions << new_version
                 end
               end
               # Copies issue categories from +project+
               def copy_issue_categories(project)
                 project.issue_categories.each do |issue_category|
                   new_issue_category = IssueCategory.new
                   new_issue_category.attributes = issue_category.attributes.dup.except("id", "project_id")
                   self.issue_categories << new_issue_category
                 end
               end
               # Copies issues from +project+
               def copy_issues(project)
                 # Stores the source issue id as a key and the copied issues as the
                 # value.  Used to map the two togeather for issue relations.
                 issues_map = {}
                 # Get issues sorted by root_id, lft so that parent issues
                 # get copied before their children
                 project.issues.find(:all, :order => 'root_id, lft').each do |issue|
                   new_issue = Issue.new
                   new_issue.copy_from(issue)
                   new_issue.project = self
                   # Reassign fixed_versions by name, since names are unique per
                   # project and the versions for self are not yet saved
                   if issue.fixed_version
                     new_issue.fixed_version = self.versions.select {|v| v.name == issue.fixed_version.name}.first
                   end
                   # Reassign the category by name, since names are unique per
                   # project and the categories for self are not yet saved
                   if issue.category
                     new_issue.category = self.issue_categories.select {|c| c.name == issue.category.name}.first
                   end
                   # Parent issue
                   if issue.parent_id
                     if copied_parent = issues_map[issue.parent_id]
                       new_issue.parent_issue_id = copied_parent.id
                     end
                   end
                   self.issues << new_issue
                   if new_issue.new_record?
                     logger.info "Project#copy_issues: issue ##{issue.id} could not be copied: #{new_issue.errors.full_messages}" if logger && logger.info
                   else
                     issues_map[issue.id] = new_issue unless new_issue.new_record?
                   end
                 end
                 # Relations after in case issues related each other
                 project.issues.each do |issue|
                   new_issue = issues_map[issue.id]
                   unless new_issue
                     # Issue was not copied
                     next
                   end
                   # Relations
                   issue.relations_from.each do |source_relation|
                     new_issue_relation = IssueRelation.new
                     new_issue_relation.attributes = source_relation.attributes.dup.except("id", "issue_from_id", "issue_to_id")
                     new_issue_relation.issue_to = issues_map[source_relation.issue_to_id]
                     if new_issue_relation.issue_to.nil? && Setting.cross_project_issue_relations?
                       new_issue_relation.issue_to = source_relation.issue_to
                     end
                     new_issue.relations_from << new_issue_relation
                   end
                   issue.relations_to.each do |source_relation|
                     new_issue_relation = IssueRelation.new
                     new_issue_relation.attributes = source_relation.attributes.dup.except("id", "issue_from_id", "issue_to_id")
                     new_issue_relation.issue_from = issues_map[source_relation.issue_from_id]
                     if new_issue_relation.issue_from.nil? && Setting.cross_project_issue_relations?
                       new_issue_relation.issue_from = source_relation.issue_from
                     end
                     new_issue.relations_to << new_issue_relation
                   end
                 end
               end
               # Copies members from +project+
               def copy_members(project)
                 project.memberships.each do |member|
                   new_member = Member.new
                   new_member.attributes = member.attributes.dup.except("id", "project_id", "created_on")
                   # only copy non inherited roles
                   # inherited roles will be added when copying the group membership
                   role_ids = member.member_roles.reject(&:inherited?).collect(&:role_id)
                   next if role_ids.empty?
                   new_member.role_ids = role_ids
                   new_member.project = self
                   self.members << new_member
                 end
               end
               # Copies queries from +project+
               def copy_queries(project)
                 project.queries.each do |query|
                   new_query = Query.new
                   new_query.attributes = query.attributes.dup.except("id", "project_id", "sort_criteria")
                   new_query.sort_criteria = query.sort_criteria if query.sort_criteria
                   new_query.project = self
                   self.queries << new_query
                 end
               end
               # Copies boards from +project+
               def copy_boards(project)
                 project.boards.each do |board|
                   new_board = Board.new
                   new_board.attributes = board.attributes.dup.except("id", "project_id", "topics_count", "messages_count", "last_message_id")
                   new_board.project = self
                   self.boards << new_board
                 end
               end
               def allowed_permissions
                 @allowed_permissions ||= begin
                   module_names = enabled_modules.all(:select => :name).collect {|m| m.name}
                   Redmine::AccessControl.modules_permissions(module_names).collect {|p| p.name}
                 end
               end
               def allowed_actions
                 @actions_allowed ||= allowed_permissions.inject([]) { |actions, permission| actions += Redmine::AccessControl.allowed_actions(permission) }.flatten
               end
               # Returns all the active Systemwide and project specific activities
               def active_activities
                 overridden_activity_ids = self.time_entry_activities.collect(&:parent_id)
                 if overridden_activity_ids.empty?
                   return TimeEntryActivity.shared.active
                 else
                   return system_activities_and_project_overrides
                 end
               end
               # Returns all the Systemwide and project specific activities
               # (inactive and active)
               def all_activities
                 overridden_activity_ids = self.time_entry_activities.collect(&:parent_id)
                 if overridden_activity_ids.empty?
                   return TimeEntryActivity.shared
                 else
                   return system_activities_and_project_overrides(true)
                 end
               end
               # Returns the systemwide active activities merged with the project specific overrides
               def system_activities_and_project_overrides(include_inactive=false)
                 if include_inactive
                   return TimeEntryActivity.shared.
                     find(:all,
                          :conditions => ["id NOT IN (?)", self.time_entry_activities.collect(&:parent_id)]) +
                     self.time_entry_activities
                 else
                   return TimeEntryActivity.shared.active.
                     find(:all,
                          :conditions => ["id NOT IN (?)", self.time_entry_activities.collect(&:parent_id)]) +
                     self.time_entry_activities.active
                 end
               end
               # Archives subprojects recursively
               def archive!
                 children.each do |subproject|
                   subproject.send :archive!
                 end
                 update_attribute :status, STATUS_ARCHIVED
               end
             end

app/models/version.rb +2 -3

             # Redmine - project management software
             # Copyright (C) 2006-2010  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 Version < ActiveRecord::Base
               after_update :update_issues_from_sharing_change
               belongs_to :project
               has_many :fixed_issues, :class_name => 'Issue', :foreign_key => 'fixed_version_id', :dependent => :nullify
               acts_as_customizable
               acts_as_attachable :view_permission => :view_files,
                                  :delete_permission => :manage_files
               VERSION_STATUSES = %w(open locked closed)
               VERSION_SHARINGS = %w(none descendants hierarchy tree system)
               validates_presence_of :name
               validates_uniqueness_of :name, :scope => [:project_id]
               validates_length_of :name, :maximum => 60
               validates_format_of :effective_date, :with => /^\d{4}-\d{2}-\d{2}$/, :message => :not_a_date, :allow_nil => true
               validates_inclusion_of :status, :in => VERSION_STATUSES
               validates_inclusion_of :sharing, :in => VERSION_SHARINGS
               named_scope :open, :conditions => {:status => 'open'}
               named_scope :visible, lambda {|*args| { :include => :project,
                                                       :conditions => Project.allowed_to_condition(args.first || User.current, :view_issues) } }
               # Returns true if +user+ or current user is allowed to view the version
               def visible?(user=User.current)
                 user.allowed_to?(:view_issues, self.project)
               end
               def start_date
-                effective_date
+                @start_date ||= fixed_issues.minimum('start_date')
               end
               def due_date
                 effective_date
               end
               # Returns the total estimated time for this version
               # (sum of leaves estimated_hours)
               def estimated_hours
                 @estimated_hours ||= fixed_issues.leaves.sum(:estimated_hours).to_f
               end
               # Returns the total reported time for this version
               def spent_hours
                 @spent_hours ||= TimeEntry.sum(:hours, :include => :issue, :conditions => ["#{Issue.table_name}.fixed_version_id = ?", id]).to_f
               end
               def closed?
                 status == 'closed'
               end
               def open?
                 status == 'open'
               end
               # Returns true if the version is completed: due date reached and no open issues
               def completed?
                 effective_date && (effective_date <= Date.today) && (open_issues_count == 0)
               end
               def behind_schedule?
                 if completed_pourcent == 100
                   return false
-                elsif due_date && fixed_issues.present? && fixed_issues.minimum('start_date') # TODO: should use #start_date but that method is wrong...
+                elsif due_date && start_date
-                  start_date = fixed_issues.minimum('start_date')
                   done_date = start_date + ((due_date - start_date+1)* completed_pourcent/100).floor
                   return done_date <= Date.today
                 else
                   false # No issues so it's not late
                 end
               end
               # Returns the completion percentage of this version based on the amount of open/closed issues
               # and the time spent on the open issues.
               def completed_pourcent
                 if issues_count == 0
                 elsif open_issues_count == 0
                 else
                   issues_progress(false) + issues_progress(true)
                 end
               end
               # Returns the percentage of issues that have been marked as 'closed'.
               def closed_pourcent
                 if issues_count == 0
                 else
                   issues_progress(false)
                 end
               end
               # Returns true if the version is overdue: due date reached and some open issues
               def overdue?
                 effective_date && (effective_date < Date.today) && (open_issues_count > 0)
               end
               # Returns assigned issues count
               def issues_count
                 @issue_count ||= fixed_issues.count
               end
               # Returns the total amount of open issues for this version.
               def open_issues_count
                 @open_issues_count ||= Issue.count(:all, :conditions => ["fixed_version_id = ? AND is_closed = ?", self.id, false], :include => :status)
               end
               # Returns the total amount of closed issues for this version.
               def closed_issues_count
                 @closed_issues_count ||= Issue.count(:all, :conditions => ["fixed_version_id = ? AND is_closed = ?", self.id, true], :include => :status)
               end
               def wiki_page
                 if project.wiki && !wiki_page_title.blank?
                   @wiki_page ||= project.wiki.find_page(wiki_page_title)
                 end
                 @wiki_page
               end
               def to_s; name end
               def to_s_with_project
                 "#{project} - #{name}"
               end
               # Versions are sorted by effective_date and "Project Name - Version name"
               # Those with no effective_date are at the end, sorted by "Project Name - Version name"
               def <=>(version)
                 if self.effective_date
                   if version.effective_date
                     if self.effective_date == version.effective_date
                       "#{self.project.name} - #{self.name}" <=> "#{version.project.name} - #{version.name}"
                     else
                       self.effective_date <=> version.effective_date
                     end
                   else
                     -1
                   end
                 else
                   if version.effective_date
                   else
                     "#{self.project.name} - #{self.name}" <=> "#{version.project.name} - #{version.name}"
                   end
                 end
               end
               # Returns the sharings that +user+ can set the version to
               def allowed_sharings(user = User.current)
                 VERSION_SHARINGS.select do |s|
                   if sharing == s
                     true
                   else
                     case s
                     when 'system'
                       # Only admin users can set a systemwide sharing
                       user.admin?
                     when 'hierarchy', 'tree'
                       # Only users allowed to manage versions of the root project can
                       # set sharing to hierarchy or tree
                       project.nil? || user.allowed_to?(:manage_versions, project.root)
                     else
                       true
                     end
                   end
                 end
               end
               private
               # Update the issue's fixed versions. Used if a version's sharing changes.
               def update_issues_from_sharing_change
                 if sharing_changed?
                   if VERSION_SHARINGS.index(sharing_was).nil? ||
                       VERSION_SHARINGS.index(sharing).nil? ||
                       VERSION_SHARINGS.index(sharing_was) > VERSION_SHARINGS.index(sharing)
                     Issue.update_versions_from_sharing_change self
                   end
                 end
               end
               # Returns the average estimated time of assigned issues
               # or 1 if no issue has an estimated time
               # Used to weigth unestimated issues in progress calculation
               def estimated_average
                 if @estimated_average.nil?
                   average = fixed_issues.average(:estimated_hours).to_f
                   if average == 0
                     average = 1
                   end
                   @estimated_average = average
                 end
                 @estimated_average
               end
               # Returns the total progress of open or closed issues.  The returned percentage takes into account
               # the amount of estimated time set for this version.
               #
               # Examples:
               # issues_progress(true)   => returns the progress percentage for open issues.
               # issues_progress(false)  => returns the progress percentage for closed issues.
               def issues_progress(open)
                 @issues_progress ||= {}
                 @issues_progress[open] ||= begin
                   progress = 0
                   if issues_count > 0
                     ratio = open ? 'done_ratio' : 100
                     done = fixed_issues.sum("COALESCE(estimated_hours, #{estimated_average}) * #{ratio}",
                                               :include => :status,
                                               :conditions => ["is_closed = ?", !open]).to_f
                     progress = done / (estimated_average * issues_count)
                   end
                   progress
                 end
               end
             end

lib/redmine/helpers/gantt.rb +1 -1

             # Redmine - project management software
             # Copyright (C) 2006-2008  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.
             module Redmine
               module Helpers
                 # Simple class to handle gantt chart data
                 class Gantt
                   include ERB::Util
                   include Redmine::I18n
                   # :nodoc:
                   # Some utility methods for the PDF export
                   class PDF
                     MaxCharactorsForSubject = 45
                     TotalWidth = 280
                     LeftPaneWidth = 100
                     def self.right_pane_width
                       TotalWidth - LeftPaneWidth
                     end
                   end
                   attr_reader :year_from, :month_from, :date_from, :date_to, :zoom, :months, :truncated, :max_rows
                   attr_accessor :query
                   attr_accessor :project
                   attr_accessor :view
                   def initialize(options={})
                     options = options.dup
                     if options[:year] && options[:year].to_i >0
                       @year_from = options[:year].to_i
                       if options[:month] && options[:month].to_i >=1 && options[:month].to_i <= 12
                         @month_from = options[:month].to_i
                       else
                         @month_from = 1
                       end
                     else
                       @month_from ||= Date.today.month
                       @year_from ||= Date.today.year
                     end
                     zoom = (options[:zoom] || User.current.pref[:gantt_zoom]).to_i
                     @zoom = (zoom > 0 && zoom < 5) ? zoom : 2
                     months = (options[:months] || User.current.pref[:gantt_months]).to_i
                     @months = (months > 0 && months < 25) ? months : 6
                     # Save gantt parameters as user preference (zoom and months count)
                     if (User.current.logged? && (@zoom != User.current.pref[:gantt_zoom] || @months != User.current.pref[:gantt_months]))
                       User.current.pref[:gantt_zoom], User.current.pref[:gantt_months] = @zoom, @months
                       User.current.preference.save
                     end
                     @date_from = Date.civil(@year_from, @month_from, 1)
                     @date_to = (@date_from >> @months) - 1
                     @subjects = ''
                     @lines = ''
                     @number_of_rows = nil
                     @issue_ancestors = []
                     @truncated = false
                     if options.has_key?(:max_rows)
                       @max_rows = options[:max_rows]
                     else
                       @max_rows = Setting.gantt_items_limit.blank? ? nil : Setting.gantt_items_limit.to_i
                     end
                   end
                   def common_params
                     { :controller => 'gantts', :action => 'show', :project_id => @project }
                   end
                   def params
                     common_params.merge({  :zoom => zoom, :year => year_from, :month => month_from, :months => months })
                   end
                   def params_previous
                     common_params.merge({:year => (date_from << months).year, :month => (date_from << months).month, :zoom => zoom, :months => months })
                   end
                   def params_next
                     common_params.merge({:year => (date_from >> months).year, :month => (date_from >> months).month, :zoom => zoom, :months => months })
                   end
                         ### Extracted from the HTML view/helpers
                   # Returns the number of rows that will be rendered on the Gantt chart
                   def number_of_rows
                     return @number_of_rows if @number_of_rows
                     rows = if @project
                       number_of_rows_on_project(@project)
                     else
                       Project.roots.visible.has_module('issue_tracking').inject(0) do |total, project|
                         total += number_of_rows_on_project(project)
                       end
                     end
                     rows > @max_rows ? @max_rows : rows
                   end
                   # Returns the number of rows that will be used to list a project on
                   # the Gantt chart.  This will recurse for each subproject.
                   def number_of_rows_on_project(project)
                     # Remove the project requirement for Versions because it will
                     # restrict issues to only be on the current project.  This
                     # ends up missing issues which are assigned to shared versions.
                     @query.project = nil if @query.project
                     # One Root project
                     count = 1
                     # Issues without a Version
                     count += project.issues.for_gantt.without_version.with_query(@query).count
                     # Versions
                     count += project.versions.count
                     # Issues on the Versions
                     project.versions.each do |version|
                       count += version.fixed_issues.for_gantt.with_query(@query).count
                     end
                     # Subprojects
                     project.children.visible.has_module('issue_tracking').each do |subproject|
                       count += number_of_rows_on_project(subproject)
                     end
                     count
                   end
                   # Renders the subjects of the Gantt chart, the left side.
                   def subjects(options={})
                     render(options.merge(:only => :subjects)) unless @subjects_rendered
                     @subjects
                   end
                   # Renders the lines of the Gantt chart, the right side
                   def lines(options={})
                     render(options.merge(:only => :lines)) unless @lines_rendered
                     @lines
                   end
                   def render(options={})
                     options = {:indent => 4, :render => :subject, :format => :html}.merge(options)
                     @subjects = '' unless options[:only] == :lines
                     @lines = '' unless options[:only] == :subjects
                     @number_of_rows = 0
                     if @project
                       render_project(@project, options)
                     else
                       Project.roots.visible.has_module('issue_tracking').each do |project|
                         render_project(project, options)
                         break if abort?
                       end
                     end
                     @subjects_rendered = true unless options[:only] == :lines
                     @lines_rendered = true unless options[:only] == :subjects
                     render_end(options)
                   end
                   def render_project(project, options={})
                     options[:top] = 0 unless options.key? :top
                     options[:indent_increment] = 20 unless options.key? :indent_increment
                     options[:top_increment] = 20 unless options.key? :top_increment
                     subject_for_project(project, options) unless options[:only] == :lines
                     line_for_project(project, options) unless options[:only] == :subjects
                     options[:top] += options[:top_increment]
                     options[:indent] += options[:indent_increment]
                     @number_of_rows += 1
                     return if abort?
                     # Second, Issues without a version
                     issues = project.issues.for_gantt.without_version.with_query(@query).all(:limit => current_limit)
                     sort_issues!(issues)
                     if issues
                       render_issues(issues, options)
                       return if abort?
                     end
                     # Third, Versions
                     project.versions.sort.each do |version|
                       render_version(version, options)
                       return if abort?
                     end
                     # Fourth, subprojects
                     project.children.visible.has_module('issue_tracking').each do |project|
                       render_project(project, options)
                       return if abort?
                     end unless project.leaf?
                     # Remove indent to hit the next sibling
                     options[:indent] -= options[:indent_increment]
                   end
                   def render_issues(issues, options={})
                     @issue_ancestors = []
                     issues.each do |i|
                       subject_for_issue(i, options) unless options[:only] == :lines
                       line_for_issue(i, options) unless options[:only] == :subjects
                       options[:top] += options[:top_increment]
                       @number_of_rows += 1
                       break if abort?
                     end
                     options[:indent] -= (options[:indent_increment] * @issue_ancestors.size)
                   end
                   def render_version(version, options={})
                     # Version header
                     subject_for_version(version, options) unless options[:only] == :lines
                     line_for_version(version, options) unless options[:only] == :subjects
                     options[:top] += options[:top_increment]
                     @number_of_rows += 1
                     return if abort?
                     # Remove the project requirement for Versions because it will
                     # restrict issues to only be on the current project.  This
                     # ends up missing issues which are assigned to shared versions.
                     @query.project = nil if @query.project
                     issues = version.fixed_issues.for_gantt.with_query(@query).all(:limit => current_limit)
                     if issues
                       sort_issues!(issues)
                       # Indent issues
                       options[:indent] += options[:indent_increment]
                       render_issues(issues, options)
                       options[:indent] -= options[:indent_increment]
                     end
                   end
                   def render_end(options={})
                     case options[:format]
                     when :pdf
                       options[:pdf].Line(15, options[:top], PDF::TotalWidth, options[:top])
                     end
                   end
                   def subject_for_project(project, options)
                     case options[:format]
                     when :html
                       subject = "<span class='icon icon-projects #{project.overdue? ? 'project-overdue' : ''}'>"
                       subject << view.link_to_project(project)
                       subject << '</span>'
                       html_subject(options, subject, :css => "project-name")
                     when :image
                       image_subject(options, project.name)
                     when :pdf
                       pdf_new_page?(options)
                       pdf_subject(options, project.name)
                     end
                   end
                   def line_for_project(project, options)
                     # Skip versions that don't have a start_date or due date
                     if project.is_a?(Project) && project.start_date && project.due_date
                       options[:zoom] ||= 1
                       options[:g_width] ||= (self.date_to - self.date_from + 1) * options[:zoom]
                       coords = coordinates(project.start_date, project.due_date, project.completed_percent(:include_subprojects => true), options[:zoom])
                       label = "#{h project } #{h project.completed_percent(:include_subprojects => true).to_i.to_s}%"
                       case options[:format]
                       when :html
                         html_task(options, coords, :css => "project task", :label => label, :markers => true)
                       when :image
                         image_task(options, coords, :label => label, :markers => true, :height => 3)
                       when :pdf
                         pdf_task(options, coords, :label => label, :markers => true, :height => 0.8)
                       end
                     else
                       ActiveRecord::Base.logger.debug "Gantt#line_for_project was not given a project with a start_date"
                       ''
                     end
                   end
                   def subject_for_version(version, options)
                     case options[:format]
                     when :html
                       subject = "<span class='icon icon-package #{version.behind_schedule? ? 'version-behind-schedule' : ''} #{version.overdue? ? 'version-overdue' : ''}'>"
                       subject << view.link_to_version(version)
                       subject << '</span>'
                       html_subject(options, subject, :css => "version-name")
                     when :image
                       image_subject(options, version.to_s_with_project)
                     when :pdf
                       pdf_new_page?(options)
                       pdf_subject(options, version.to_s_with_project)
                     end
                   end
                   def line_for_version(version, options)
                     # Skip versions that don't have a start_date
                     if version.is_a?(Version) && version.start_date && version.due_date
                       options[:zoom] ||= 1
                       options[:g_width] ||= (self.date_to - self.date_from + 1) * options[:zoom]
-                      coords = coordinates(version.fixed_issues.minimum('start_date'), version.due_date, version.completed_pourcent, options[:zoom])
+                      coords = coordinates(version.start_date, version.due_date, version.completed_pourcent, options[:zoom])
                       label = "#{h version } #{h version.completed_pourcent.to_i.to_s}%"
                       label = h("#{version.project} -") + label unless @project && @project == version.project
                       case options[:format]
                       when :html
                         html_task(options, coords, :css => "version task", :label => label, :markers => true)
                       when :image
                         image_task(options, coords, :label => label, :markers => true, :height => 3)
                       when :pdf
                         pdf_task(options, coords, :label => label, :markers => true, :height => 0.8)
                       end
                     else
                       ActiveRecord::Base.logger.debug "Gantt#line_for_version was not given a version with a start_date"
                       ''
                     end
                   end
                   def subject_for_issue(issue, options)
                     while @issue_ancestors.any? && !issue.is_descendant_of?(@issue_ancestors.last)
                       @issue_ancestors.pop
                       options[:indent] -= options[:indent_increment]
                     end
                     output = case options[:format]
                     when :html
                       css_classes = ''
                       css_classes << ' issue-overdue' if issue.overdue?
                       css_classes << ' issue-behind-schedule' if issue.behind_schedule?
                       css_classes << ' icon icon-issue' unless Setting.gravatar_enabled? && issue.assigned_to
                       subject = "<span class='#{css_classes}'>"
                       if issue.assigned_to.present?
                         assigned_string = l(:field_assigned_to) + ": " + issue.assigned_to.name
                         subject << view.avatar(issue.assigned_to, :class => 'gravatar icon-gravatar', :size => 10, :title => assigned_string)
                       end
                       subject << view.link_to_issue(issue)
                       subject << '</span>'
                       html_subject(options, subject, :css => "issue-subject") + "\n"
                     when :image
                       image_subject(options, issue.subject)
                     when :pdf
                       pdf_new_page?(options)
                       pdf_subject(options, issue.subject)
                     end
                     unless issue.leaf?
                       @issue_ancestors << issue
                       options[:indent] += options[:indent_increment]
                     end
                     output
                   end
                   def line_for_issue(issue, options)
                     # Skip issues that don't have a due_before (due_date or version's due_date)
                     if issue.is_a?(Issue) && issue.due_before
                       coords = coordinates(issue.start_date, issue.due_before, issue.done_ratio, options[:zoom])
                       label = "#{ issue.status.name } #{ issue.done_ratio }%"
                       case options[:format]
                       when :html
                         html_task(options, coords, :css => "task " + (issue.leaf? ? 'leaf' : 'parent'), :label => label, :issue => issue, :markers => !issue.leaf?)
                       when :image
                         image_task(options, coords, :label => label)
                       when :pdf
                         pdf_task(options, coords, :label => label)
                     end
                     else
                       ActiveRecord::Base.logger.debug "GanttHelper#line_for_issue was not given an issue with a due_before"
                       ''
                     end
                   end
                   # Generates a gantt image
                   # Only defined if RMagick is avalaible
                   def to_image(format='PNG')
                     date_to = (@date_from >> @months)-1
                     show_weeks = @zoom > 1
                     show_days = @zoom > 2
                     subject_width = 400
                     header_heigth = 18
                     # width of one day in pixels
                     zoom = @zoom*2
                     g_width = (@date_to - @date_from + 1)*zoom
                     g_height = 20 * number_of_rows + 30
                     headers_heigth = (show_weeks ? 2*header_heigth : header_heigth)
                     height = g_height + headers_heigth
                     imgl = Magick::ImageList.new
                     imgl.new_image(subject_width+g_width+1, height)
                     gc = Magick::Draw.new
                     # Subjects
                     gc.stroke('transparent')
                     subjects(:image => gc, :top => (headers_heigth + 20), :indent => 4, :format => :image)
                     # Months headers
                     month_f = @date_from
                     left = subject_width
                     @months.times do
                       width = ((month_f >> 1) - month_f) * zoom
                       gc.fill('white')
                       gc.stroke('grey')
                       gc.stroke_width(1)
                       gc.rectangle(left, 0, left + width, height)
                       gc.fill('black')
                       gc.stroke('transparent')
                       gc.stroke_width(1)
                       gc.text(left.round + 8, 14, "#{month_f.year}-#{month_f.month}")
                       left = left + width
                       month_f = month_f >> 1
                     end
                     # Weeks headers
                     if show_weeks
                     	left = subject_width
                     	height = header_heigth
                     	if @date_from.cwday == 1
                     	    # date_from is monday
                             week_f = date_from
                     	else
                     	    # find next monday after date_from
                     		week_f = @date_from + (7 - @date_from.cwday + 1)
                     		width = (7 - @date_from.cwday + 1) * zoom
                             gc.fill('white')
                             gc.stroke('grey')
                             gc.stroke_width(1)
                             gc.rectangle(left, header_heigth, left + width, 2*header_heigth + g_height-1)
                     		left = left + width
                     	end
                     	while week_f <= date_to
                     		width = (week_f + 6 <= date_to) ? 7 * zoom : (date_to - week_f + 1) * zoom
                             gc.fill('white')
                             gc.stroke('grey')
                             gc.stroke_width(1)
                             gc.rectangle(left.round, header_heigth, left.round + width, 2*header_heigth + g_height-1)
                             gc.fill('black')
                             gc.stroke('transparent')
                             gc.stroke_width(1)
                             gc.text(left.round + 2, header_heigth + 14, week_f.cweek.to_s)
                     		left = left + width
                     		week_f = week_f+7
                     	end
                     end
                     # Days details (week-end in grey)
                     if show_days
                     	left = subject_width
                     	height = g_height + header_heigth - 1
                     	wday = @date_from.cwday
                     	(date_to - @date_from + 1).to_i.times do
                           width =  zoom
                           gc.fill(wday == 6 || wday == 7 ? '#eee' : 'white')
                           gc.stroke('grey')
                           gc.stroke_width(1)
                           gc.rectangle(left, 2*header_heigth, left + width, 2*header_heigth + g_height-1)
                           left = left + width
                           wday = wday + 1
                           wday = 1 if wday > 7
                     	end
                     end
                     # border
                     gc.fill('transparent')
                     gc.stroke('grey')
                     gc.stroke_width(1)
                     gc.rectangle(0, 0, subject_width+g_width, headers_heigth)
                     gc.stroke('black')
                     gc.rectangle(0, 0, subject_width+g_width, g_height+ headers_heigth-1)
                     # content
                     top = headers_heigth + 20
                     gc.stroke('transparent')
                     lines(:image => gc, :top => top, :zoom => zoom, :subject_width => subject_width, :format => :image)
                     # today red line
                     if Date.today >= @date_from and Date.today <= date_to
                       gc.stroke('red')
                       x = (Date.today-@date_from+1)*zoom + subject_width
                       gc.line(x, headers_heigth, x, headers_heigth + g_height-1)
                     end
                     gc.draw(imgl)
                     imgl.format = format
                     imgl.to_blob
                   end if Object.const_defined?(:Magick)
                   def to_pdf
                     pdf = ::Redmine::Export::PDF::IFPDF.new(current_language)
                     pdf.SetTitle("#{l(:label_gantt)} #{project}")
                     pdf.AliasNbPages
                     pdf.footer_date = format_date(Date.today)
                     pdf.AddPage("L")
                     pdf.SetFontStyle('B',12)
                     pdf.SetX(15)
                     pdf.Cell(PDF::LeftPaneWidth, 20, project.to_s)
                     pdf.Ln
                     pdf.SetFontStyle('B',9)
                     subject_width = PDF::LeftPaneWidth
                     header_heigth = 5
                     headers_heigth = header_heigth
                     show_weeks = false
                     show_days = false
                     if self.months < 7
                       show_weeks = true
                       headers_heigth = 2*header_heigth
                       if self.months < 3
                         show_days = true
                         headers_heigth = 3*header_heigth
                       end
                     end
                     g_width = PDF.right_pane_width
                     zoom = (g_width) / (self.date_to - self.date_from + 1)
                     g_height = 120
                     t_height = g_height + headers_heigth
                     y_start = pdf.GetY
                     # Months headers
                     month_f = self.date_from
                     left = subject_width
                     height = header_heigth
                     self.months.times do
                       width = ((month_f >> 1) - month_f) * zoom
                       pdf.SetY(y_start)
                       pdf.SetX(left)
                       pdf.Cell(width, height, "#{month_f.year}-#{month_f.month}", "LTR", 0, "C")
                       left = left + width
                       month_f = month_f >> 1
                     end
                     # Weeks headers
                     if show_weeks
                       left = subject_width
                       height = header_heigth
                       if self.date_from.cwday == 1
                         # self.date_from is monday
                         week_f = self.date_from
                       else
                         # find next monday after self.date_from
                         week_f = self.date_from + (7 - self.date_from.cwday + 1)
                         width = (7 - self.date_from.cwday + 1) * zoom-1
                         pdf.SetY(y_start + header_heigth)
                         pdf.SetX(left)
                         pdf.Cell(width + 1, height, "", "LTR")
                         left = left + width+1
                       end
                       while week_f <= self.date_to
                         width = (week_f + 6 <= self.date_to) ? 7 * zoom : (self.date_to - week_f + 1) * zoom
                         pdf.SetY(y_start + header_heigth)
                         pdf.SetX(left)
                         pdf.Cell(width, height, (width >= 5 ? week_f.cweek.to_s : ""), "LTR", 0, "C")
                         left = left + width
                         week_f = week_f+7
                       end
                     end
                     # Days headers
                     if show_days
                       left = subject_width
                       height = header_heigth
                       wday = self.date_from.cwday
                       pdf.SetFontStyle('B',7)
                       (self.date_to - self.date_from + 1).to_i.times do
                         width = zoom
                         pdf.SetY(y_start + 2 * header_heigth)
                         pdf.SetX(left)
                         pdf.Cell(width, height, day_name(wday).first, "LTR", 0, "C")
                         left = left + width
                         wday = wday + 1
                         wday = 1 if wday > 7
                       end
                     end
                     pdf.SetY(y_start)
                     pdf.SetX(15)
                     pdf.Cell(subject_width+g_width-15, headers_heigth, "", 1)
                     # Tasks
                     top = headers_heigth + y_start
                     options = {
                       :top => top,
                       :zoom => zoom,
                       :subject_width => subject_width,
                       :g_width => g_width,
                       :indent => 0,
                       :indent_increment => 5,
                       :top_increment => 5,
                       :format => :pdf,
                       :pdf => pdf
                     }
                     render(options)
                     pdf.Output
                   end
                   private
                   def coordinates(start_date, end_date, progress, zoom=nil)
                     zoom ||= @zoom
                     coords = {}
                     if start_date && end_date && start_date < self.date_to && end_date > self.date_from
                       if start_date > self.date_from
                         coords[:start] = start_date - self.date_from
                         coords[:bar_start] = start_date - self.date_from
                       else
                         coords[:bar_start] = 0
                       end
                       if end_date < self.date_to
                         coords[:end] = end_date - self.date_from
                         coords[:bar_end] = end_date - self.date_from + 1
                       else
                         coords[:bar_end] = self.date_to - self.date_from + 1
                       end
                       if progress
                         progress_date = start_date + (end_date - start_date) * (progress / 100.0)
                         if progress_date > self.date_from && progress_date > start_date
                           if progress_date < self.date_to
                             coords[:bar_progress_end] = progress_date - self.date_from + 1
                           else
                             coords[:bar_progress_end] = self.date_to - self.date_from + 1
                           end
                         end
                         if progress_date < Date.today
                           late_date = [Date.today, end_date].min
                           if late_date > self.date_from && late_date > start_date
                             if late_date < self.date_to
                               coords[:bar_late_end] = late_date - self.date_from + 1
                             else
                               coords[:bar_late_end] = self.date_to - self.date_from + 1
                             end
                           end
                         end
                       end
                     end
                     # Transforms dates into pixels witdh
                     coords.keys.each do |key|
                       coords[key] = (coords[key] * zoom).floor
                     end
                     coords
                   end
                   # Sorts a collection of issues by start_date, due_date, id for gantt rendering
                   def sort_issues!(issues)
                     issues.sort! { |a, b| gantt_issue_compare(a, b, issues) }
                   end
                   def gantt_issue_compare(x, y, issues)
                     if x.parent_id == y.parent_id
                       gantt_start_compare(x, y)
                     elsif x.is_ancestor_of?(y)
                       -1
                     elsif y.is_ancestor_of?(x)
                     else
                       ax = issues.select {|i| i.is_a?(Issue) && i.is_ancestor_of?(x) && !i.is_ancestor_of?(y) }.sort_by(&:lft).first
                       ay = issues.select {|i| i.is_a?(Issue) && i.is_ancestor_of?(y) && !i.is_ancestor_of?(x) }.sort_by(&:lft).first
                       if ax.nil? && ay.nil?
                         gantt_start_compare(x, y)
                       else
                         gantt_issue_compare(ax || x, ay || y, issues)
                       end
                     end
                   end
                   def gantt_start_compare(x, y)
                     if x.start_date.nil?
                       -1
                     elsif y.start_date.nil?
                     else
                       x.start_date <=> y.start_date
                     end
                   end
                   def current_limit
                     if @max_rows
                       @max_rows - @number_of_rows
                     else
                       nil
                     end
                   end
                   def abort?
                     if @max_rows && @number_of_rows >= @max_rows
                       @truncated = true
                     end
                   end
                   def pdf_new_page?(options)
                     if options[:top] > 180
                       options[:pdf].Line(15, options[:top], PDF::TotalWidth, options[:top])
                       options[:pdf].AddPage("L")
                       options[:top] = 15
                       options[:pdf].Line(15, options[:top] - 0.1, PDF::TotalWidth, options[:top] - 0.1)
                     end
                   end
                   def html_subject(params, subject, options={})
                     output = "<div class=' #{options[:css] }' style='position: absolute;line-height:1.2em;height:16px;top:#{params[:top]}px;left:#{params[:indent]}px;overflow:hidden;'>"
                     output << subject
                     output << "</div>"
                     @subjects << output
                     output
                   end
                   def pdf_subject(params, subject, options={})
                     params[:pdf].SetY(params[:top])
                     params[:pdf].SetX(15)
                     char_limit = PDF::MaxCharactorsForSubject - params[:indent]
                     params[:pdf].Cell(params[:subject_width]-15, 5, (" " * params[:indent]) +  subject.to_s.sub(/^(.{#{char_limit}}[^\s]*\s).*$/, '\1 (...)'), "LR")
                     params[:pdf].SetY(params[:top])
                     params[:pdf].SetX(params[:subject_width])
                     params[:pdf].Cell(params[:g_width], 5, "", "LR")
                   end
                   def image_subject(params, subject, options={})
                     params[:image].fill('black')
                     params[:image].stroke('transparent')
                     params[:image].stroke_width(1)
                     params[:image].text(params[:indent], params[:top] + 2, subject)
                   end
                   def html_task(params, coords, options={})
                     output = ''
                     # Renders the task bar, with progress and late
                     if coords[:bar_start] && coords[:bar_end]
                       output << "<div style='top:#{ params[:top] }px;left:#{ coords[:bar_start] }px;width:#{ coords[:bar_end] - coords[:bar_start] - 2}px;' class='#{options[:css]} task_todo'>&nbsp;</div>"
                       if coords[:bar_late_end]
                         output << "<div style='top:#{ params[:top] }px;left:#{ coords[:bar_start] }px;width:#{ coords[:bar_late_end] - coords[:bar_start] - 2}px;' class='#{options[:css]} task_late'>&nbsp;</div>"
                       end
                       if coords[:bar_progress_end]
                         output << "<div style='top:#{ params[:top] }px;left:#{ coords[:bar_start] }px;width:#{ coords[:bar_progress_end] - coords[:bar_start] - 2}px;' class='#{options[:css]} task_done'>&nbsp;</div>"
                       end
                     end
                     # Renders the markers
                     if options[:markers]
                       if coords[:start]
                         output << "<div style='top:#{ params[:top] }px;left:#{ coords[:start] }px;width:15px;' class='#{options[:css]} marker starting'>&nbsp;</div>"
                       end
                       if coords[:end]
                         output << "<div style='top:#{ params[:top] }px;left:#{ coords[:end] + params[:zoom] }px;width:15px;' class='#{options[:css]} marker ending'>&nbsp;</div>"
                       end
                     end
                     # Renders the label on the right
                     if options[:label]
                       output << "<div style='top:#{ params[:top] }px;left:#{ (coords[:bar_end] || 0) + 8 }px;' class='#{options[:css]} label'>"
                       output << options[:label]
                       output << "</div>"
                     end
                     # Renders the tooltip
                     if options[:issue] && coords[:bar_start] && coords[:bar_end]
                       output << "<div class='tooltip' style='position: absolute;top:#{ params[:top] }px;left:#{ coords[:bar_start] }px;width:#{ coords[:bar_end] - coords[:bar_start] }px;height:12px;'>"
                       output << '<span class="tip">'
                       output << view.render_issue_tooltip(options[:issue])
                       output << "</span></div>"
                     end
                     @lines << output
                     output
                   end
                   def pdf_task(params, coords, options={})
                     height = options[:height] || 2
                     # Renders the task bar, with progress and late
                     if coords[:bar_start] && coords[:bar_end]
                       params[:pdf].SetY(params[:top]+1.5)
                       params[:pdf].SetX(params[:subject_width] + coords[:bar_start])
                       params[:pdf].SetFillColor(200,200,200)
                       params[:pdf].Cell(coords[:bar_end] - coords[:bar_start], height, "", 0, 0, "", 1)
                       if coords[:bar_late_end]
                         params[:pdf].SetY(params[:top]+1.5)
                         params[:pdf].SetX(params[:subject_width] + coords[:bar_start])
                         params[:pdf].SetFillColor(255,100,100)
                         params[:pdf].Cell(coords[:bar_late_end] - coords[:bar_start], height, "", 0, 0, "", 1)
                       end
                       if coords[:bar_progress_end]
                         params[:pdf].SetY(params[:top]+1.5)
                         params[:pdf].SetX(params[:subject_width] + coords[:bar_start])
                         params[:pdf].SetFillColor(90,200,90)
                         params[:pdf].Cell(coords[:bar_progress_end] - coords[:bar_start], height, "", 0, 0, "", 1)
                       end
                     end
                     # Renders the markers
                     if options[:markers]
                       if coords[:start]
                         params[:pdf].SetY(params[:top] + 1)
                         params[:pdf].SetX(params[:subject_width] + coords[:start] - 1)
                         params[:pdf].SetFillColor(50,50,200)
                         params[:pdf].Cell(2, 2, "", 0, 0, "", 1)
                       end
                       if coords[:end]
                         params[:pdf].SetY(params[:top] + 1)
                         params[:pdf].SetX(params[:subject_width] + coords[:end] - 1)
                         params[:pdf].SetFillColor(50,50,200)
                         params[:pdf].Cell(2, 2, "", 0, 0, "", 1)
                       end
                     end
                     # Renders the label on the right
                     if options[:label]
                       params[:pdf].SetX(params[:subject_width] + (coords[:bar_end] || 0) + 5)
                       params[:pdf].Cell(30, 2, options[:label])
                     end
                   end
                   def image_task(params, coords, options={})
                     height = options[:height] || 6
                     # Renders the task bar, with progress and late
                     if coords[:bar_start] && coords[:bar_end]
                       params[:image].fill('grey')
                       params[:image].rectangle(params[:subject_width] + coords[:bar_start], params[:top], params[:subject_width] + coords[:bar_end], params[:top] - height)
                       if coords[:bar_late_end]
                         params[:image].fill('red')
                         params[:image].rectangle(params[:subject_width] + coords[:bar_start], params[:top], params[:subject_width] + coords[:bar_late_end], params[:top] - height)
                       end
                       if coords[:bar_progress_end]
                         params[:image].fill('green')
                         params[:image].rectangle(params[:subject_width] + coords[:bar_start], params[:top], params[:subject_width] + coords[:bar_progress_end], params[:top] - height)
                       end
                     end
                     # Renders the markers
                     if options[:markers]
                       if coords[:start]
                         params[:image].fill('blue')
                         params[:image].rectangle(params[:subject_width] + coords[:start], params[:top] + 1, params[:subject_width] + coords[:start] + 4, params[:top] - 4)
                       end
                       if coords[:end]
                         params[:image].fill('blue')
                         params[:image].rectangle(params[:subject_width] + coords[:end], params[:top] + 1, params[:subject_width] + coords[:end] + 4, params[:top] - 4)
                       end
                     end
                     # Renders the label on the right
                     if options[:label]
                       params[:image].fill('black')
                       params[:image].text(params[:subject_width] + (coords[:bar_end] || 0) + 5,params[:top] + 1, options[:label])
                     end
                   end
                 end
               end
             end

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