added rss/atom feeds at project levels for:

* news
* new issues reported
* details of issue changes

issue cutom queries can be used as feeds

git-svn-id: http://redmine.rubyforge.org/svn/trunk@339 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/journal.rb

@@ -17,6 +17,10 @@
 
 class Journal < ActiveRecord::Base
   belongs_to :journalized, :polymorphic => true
+  # added as a quick fix to allow eager loading of the polymorphic association
+  # since always associated to an issue, for now
+  belongs_to :issue, :foreign_key => :journalized_id
+  
   belongs_to :user
   has_many :details, :class_name => "JournalDetail", :dependent => :delete_all
 end

app/models/token.rb

@@ -31,7 +31,7 @@ class Token < ActiveRecord::Base
   
   # Delete all expired tokens
   def self.destroy_expired
-    Token.delete_all ["created_on < ?", Time.now - @@validity_time]
+    Token.delete_all ["action <> 'feeds' AND created_on < ?", Time.now - @@validity_time]
   end
   
 private

app/models/user.rb

@@ -22,6 +22,7 @@ class User < ActiveRecord::Base
   has_many :projects, :through => :memberships
   has_many :custom_values, :dependent => :delete_all, :as => :customized
   has_one :preference, :dependent => :destroy, :class_name => 'UserPreference'
+  has_one :rss_key, :dependent => :destroy, :class_name => 'Token', :conditions => "action='feeds'"
   belongs_to :auth_source
   
   attr_accessor :password, :password_confirmation
@@ -133,6 +134,15 @@ class User < ActiveRecord::Base
   def pref
     self.preference ||= UserPreference.new(:user => self)
   end
+  
+  def get_or_create_rss_key
+    self.rss_key || Token.create(:user => self, :action => 'feeds')
+  end
+  
+  def self.find_by_rss_key(key)
+    token = Token.find_by_value(key)
+    token && token.user.active? ? token.user : nil
+  end
 	
 private
   # Return password digest