3 # Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies)
5 # This program is free software: you can redistribute it and/or modify
6 # it under the terms of the GNU Affero General Public License as published by
7 # the Free Software Foundation, either version 3 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU Affero General Public License for more details.
15 # You should have received a copy of the GNU Affero General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
19 # By including this module in an AR::Base descendant, this class becomes watchable:
20 # - has_many :favorites
21 # - receives instance methods
24 def self.included(base)
25 base.has_many :favorites, :as => :watchable, :dependent => :destroy
26 base.has_many :watchers, :through => :favorites, :source => :user
30 watchers.include?(user)
37 def watched_by!(a_user)
38 a_user.favorites.create!(:watchable => self, :notify_by_email => a_user.default_favorite_notifications)