Merged trunk r1773.

git-svn-id: http://redmine.rubyforge.org/svn/branches/work@1774 e93f8b46-1217-0410-a6f0-8f06a7374b81

groups/app/models/wiki_page.rb

@@ -22,14 +22,15 @@ class WikiPage < ActiveRecord::Base
   belongs_to :wiki
   has_one :content, :class_name => 'WikiContent', :foreign_key => 'page_id', :dependent => :destroy
   has_many :attachments, :as => :container, :dependent => :destroy
-
+  acts_as_tree :order => 'title'
+  
   acts_as_event :title => Proc.new {|o| "#{l(:label_wiki)}: #{o.title}"},
                 :description => :text,
                 :datetime => :created_on,
                 :url => Proc.new {|o| {:controller => 'wiki', :id => o.wiki.project_id, :page => o.title}}
 
   acts_as_searchable :columns => ['title', 'text'],
-                     :include => [:wiki, :content],
+                     :include => [{:wiki => :project}, :content],
                      :project_key => "#{Wiki.table_name}.project_id"
 
   attr_accessor :redirect_existing_links
@@ -105,6 +106,29 @@ class WikiPage < ActiveRecord::Base
   def text
     content.text if content
   end
+  
+  # Returns true if usr is allowed to edit the page, otherwise false
+  def editable_by?(usr)
+    !protected? || usr.allowed_to?(:protect_wiki_pages, wiki.project)
+  end
+  
+  def parent_title
+    @parent_title || (self.parent && self.parent.pretty_title)
+  end
+  
+  def parent_title=(t)
+    @parent_title = t
+    parent_page = t.blank? ? nil : self.wiki.find_page(t)
+    self.parent = parent_page
+  end
+  
+  protected
+  
+  def validate
+    errors.add(:parent_title, :activerecord_error_invalid) if !@parent_title.blank? && parent.nil?
+    errors.add(:parent_title, :activerecord_error_circular_dependency) if parent && (parent == self || parent.ancestors.include?(self))
+    errors.add(:parent_title, :activerecord_error_not_same_project) if parent && (parent.wiki_id != wiki_id)
+  end
 end
 
 class WikiDiff