comparison .svn/pristine/a6/a6d8d977a7db837089d88e0eb10b4689db86305a.svn-base @ 1295:622f24f53b42 redmine-2.3

Update to Redmine SVN revision 11972 on 2.3-stable branch

+# Redmine - project management software
+# Copyright (C) 2006-2012  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_CLOSED     = 5
+  STATUS_ARCHIVED   = 9
+
+  # Maximum length for project identifiers
+  IDENTIFIER_MAX_LENGTH = 100
+
+  # Specific overidden Activities
+  has_many :time_entry_activities
+  has_many :members, :include => [:principal, :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, :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 => :destroy, :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, :conditions => ["is_default = ?", true]
+  has_many :repositories, :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', :dependent => :destroy
+  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
+
+  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 )
+
+  after_save :update_position_under_parent, :if => Proc.new {|project| project.name_changed?}
+  before_destroy :delete_all_members
+
+  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] } }
+  scope :active, { :conditions => "#{Project.table_name}.status = #{STATUS_ACTIVE}"}
+  scope :status, lambda {|arg| arg.blank? ? {} : {:conditions => {:status => arg.to_i}} }
+  scope :all_public, { :conditions => { :is_public => true } }
+  scope :visible, lambda {|*args| {:conditions => Project.visible_condition(args.shift || User.current, *args) }}
+  scope :allowed_to, lambda {|*args| 
+    user = User.current
+    permission = nil
+    if args.first.is_a?(Symbol)
+      permission = args.shift
+    else
+      user = args.shift
+      permission = args.shift
+    end
+    { :conditions => Project.allowed_to_condition(user, permission, *args) }
+  }
+  scope :like, lambda {|arg|
+    if arg.blank?
+      {}
+    else
+      pattern = "%#{arg.to_s.strip.downcase}%"
+      {:conditions => ["LOWER(identifier) LIKE :p OR LOWER(name) LIKE :p", {:p => pattern}]}
+    end
+  }
+
+  def initialize(attributes=nil, *args)
+    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.sorted.all
+    end
+  end
+
+  def identifier=(identifier)
+    super unless identifier_frozen?
+  end
+
+  def identifier_frozen?
+    errors[:identifier].blank? && !(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)
+    visible(user).find(:all, :limit => count, :order => "created_on DESC")	
+  end	
+
+  # Returns true if the project is visible to +user+ or to the current user.
+  def visible?(user=User.current)
+    user.allowed_to?(:view_project, self)
+  end
+
+  # Returns a SQL conditions string used to find all projects visible by the specified user.
+  #
+  # Examples:
+  #   Project.visible_condition(admin)        => "projects.status = 1"
+  #   Project.visible_condition(normal_user)  => "((projects.status = 1) AND (projects.is_public = 1 OR projects.id IN (1,3,4)))"
+  #   Project.visible_condition(anonymous)    => "((projects.status = 1) AND (projects.is_public = 1))"
+  def self.visible_condition(user, options={})
+    allowed_to_condition(user, :view_project, options)
+  end
+
+  # Returns a SQL conditions string used to find all projects for which +user+ has the given +permission+
+  #
+  # Valid options:
+  # * :project => limit the condition to project
+  # * :with_subprojects => limit the condition to project and its subprojects
+  # * :member => limit the condition to the user projects
+  def self.allowed_to_condition(user, permission, options={})
+    perm = Redmine::AccessControl.permission(permission)
+    base_statement = (perm && perm.read? ? "#{Project.table_name}.status <> #{Project::STATUS_ARCHIVED}" : "#{Project.table_name}.status = #{Project::STATUS_ACTIVE}")
+    if perm && perm.project_module
+      # 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
+    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?
+      base_statement
+    else
+      statement_by_role = {}
+      unless options[:member]
+        role = user.logged? ? Role.non_member : Role.anonymous
+        if role.allowed_to?(permission)
+          statement_by_role[role] = "#{Project.table_name}.is_public = #{connection.quoted_true}"
+        end
+      end
+      if user.logged?
+        user.projects_by_role.each do |role, projects|
+          if role.allowed_to?(permission) && projects.any?
+            statement_by_role[role] = "#{Project.table_name}.id IN (#{projects.collect(&:id).join(',')})"
+          end
+        end
+      end
+      if statement_by_role.empty?
+        "1=0"
+      else
+        if block_given?
+          statement_by_role.each do |role, statement|
+            if s = yield(role, user)
+              statement_by_role[role] = "(#{statement} AND (#{s}))"
+            end
+          end
+        end
+        "((#{base_statement}) AND (#{statement_by_role.values.join(' OR ')}))"
+      end
+    end
+  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*$/)
+      project = find_by_identifier(*args)
+      raise ActiveRecord::RecordNotFound, "Couldn't find Project with identifier=#{args.first}" if project.nil?
+      project
+    else
+      super
+    end
+  end
+
+  def self.find_by_param(*args)
+    self.find(*args)
+  end
+
+  def reload(*args)
+    @shared_versions = nil
+    @rolled_up_versions = nil
+    @rolled_up_trackers = nil
+    @all_issue_custom_fields = nil
+    @all_time_entry_custom_fields = nil
+    @to_param = nil
+    @allowed_parents = nil
+    @allowed_permissions = nil
+    @actions_allowed = nil
+    super
+  end
+
+  def to_param
+    # id is used for projects with a numeric identifier (compatibility)
+    @to_param ||= (identifier.to_s =~ %r{^\d*$} ? id.to_s : 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
+
+  def close
+    self_and_descendants.status(STATUS_ACTIVE).update_all :status => STATUS_CLOSED
+  end
+
+  def reopen
+    self_and_descendants.status(STATUS_CLOSED).update_all :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))
+      set_or_update_position_under(p)
+      Issue.update_versions_from_hierarchy_change(self)
+      true
+    else
+      # Can not move to the given target
+      false
+    end
+  end
+
+  # Recalculates all lft and rgt values based on project names
+  # Unlike Project.rebuild!, these values are recalculated even if the tree "looks" valid
+  # Used in BuildProjectsTree migration
+  def self.rebuild_tree!
+    transaction do
+      update_all "lft = NULL, rgt = NULL"
+      rebuild!(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, :joins => :projects,
+                         :select => "DISTINCT #{Tracker.table_name}.*",
+                         :conditions => ["#{Project.table_name}.lft >= ? AND #{Project.table_name}.rgt <= ? AND #{Project.table_name}.status <> #{STATUS_ARCHIVED}", 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_ARCHIVED}", lft, rgt])
+  end
+
+  # Returns a scope of the Versions used by the project
+  def shared_versions
+    if new_record?
+      Version.scoped(:include => :project,
+                     :conditions => "#{Project.table_name}.status <> #{Project::STATUS_ARCHIVED} AND #{Version.table_name}.sharing = 'system'")
+    else
+      @shared_versions ||= begin
+        r = root? ? self : root
+        Version.scoped(:include => :project,
+                       :conditions => "#{Project.table_name}.id = #{id}" +
+                                      " OR (#{Project.table_name}.status <> #{Project::STATUS_ARCHIVED} AND (" +
+                                          " #{Version.table_name}.sharing = 'system'" +
+                                          " OR (#{Project.table_name}.lft >= #{r.lft} AND #{Project.table_name}.rgt <= #{r.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
+    end
+  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/groups issues can be assigned to
+  def assignable_users
+    assignable = Setting.issue_group_assignment? ? member_principals : members
+    assignable.select {|m| m.roles.detect {|role| role.assignable?}}.collect {|m| m.principal}.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.principal.present? && (m.mail_notification? || m.principal.mail_notification == 'all')}.collect {|m| m.principal}
+  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
+
+  # Returns an array of all custom fields enabled for project time entries
+  # (explictly associated custom fields and custom fields enabled for all projects)
+  def all_time_entry_custom_fields
+    @all_time_entry_custom_fields ||= (TimeEntryCustomField.for_all + time_entry_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')
+    unless active?
+      if archived?
+        s << ' archived'
+      else
+        s << ' closed'
+      end
+    end
+    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(&: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
+        100
+      end
+    end
+  end
+
+  # Return true if this project allows 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 archived?
+      # No action allowed on archived projects
+      return false
+    end
+    unless active? || Redmine::AccessControl.read_action?(action)
+      # No write action allowed on closed projects
+      return false
+    end
+    # No action allowed on disabled modules
+    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?)
+      self.enabled_modules = module_names.collect {|name| enabled_modules.detect {|mod| mod.name == name} || 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
+
+  # Enable a specific module
+  #
+  # Examples:
+  #   project.enable_module!(:issue_tracking)
+  #   project.enable_module!("issue_tracking")
+  def enable_module!(name)
+    enabled_modules << EnabledModule.new(:name => name.to_s) unless module_enabled?(name)
+  end
+
+  # Disable a module if it exists
+  #
+  # Examples:
+  #   project.disable_module!(:issue_tracking)
+  #   project.disable_module!("issue_tracking")
+  #   project.disable_module!(project.enabled_modules.first)
+  def disable_module!(target)
+    target = enabled_modules.detect{|mod| target.to_s == mod.name} unless enabled_modules.include?(target)
+    target.destroy unless target.blank?
+  end
+
+  safe_attributes 'name',
+    'description',
+    'homepage',
+    'is_public',
+    'identifier',
+    'custom_field_values',
+    'custom_fields',
+    'tracker_ids',
+    'issue_custom_field_ids'
+
+  safe_attributes 'enabled_module_names',
+    :if => lambda {|project, user| project.new_record? || user.allowed_to?(:select_project_modules, project) }
+
+  # 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
+
+  # Copies wiki from +project+
+  def copy_wiki(project)
+    # Check that the source project has a wiki first
+    unless project.wiki.nil?
+      wiki = 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
+
+      self.wiki = wiki
+      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 = {}
+
+    # Store status and reopen locked/closed versions
+    version_statuses = versions.reject(&:open?).map {|version| [version, version.status]}
+    version_statuses.each do |version, status|
+      version.update_attribute :status, 'open'
+    end
+
+    # 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, :subtasks => false, :link => false)
+      new_issue.project = self
+      # Reassign fixed_versions by name, since names are unique per project
+      if issue.fixed_version && issue.fixed_version.project == project
+        new_issue.fixed_version = self.versions.detect {|v| v.name == issue.fixed_version.name}
+      end
+      # Reassign the category by name, since names are unique per project
+      if issue.category
+        new_issue.category = self.issue_categories.detect {|c| c.name == issue.category.name}
+      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
+
+    # Restore locked/closed version statuses
+    version_statuses.each do |version, status|
+      version.update_attribute :status, status
+    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)
+    # Copy users first, then groups to handle members with inherited and given roles
+    members_to_copy = []
+    members_to_copy += project.memberships.select {|m| m.principal.is_a?(User)}
+    members_to_copy += project.memberships.select {|m| !m.principal.is_a?(User)}
+
+    members_to_copy.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
+      new_query.user_id = query.user_id
+      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
+
+  def update_position_under_parent
+    set_or_update_position_under(parent)
+  end
+
+  # Inserts/moves the project so that target's children or root projects stay alphabetically sorted
+  def set_or_update_position_under(target_parent)
+    sibs = (target_parent.nil? ? self.class.roots : target_parent.children)
+    to_be_inserted_before = sibs.sort_by {|c| c.name.to_s.downcase}.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 target_parent.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(target_parent)
+    end
+  end
+end