class Poll < ActiveRecord::Base
  #attr_accessible :closed_at, :polls_group_id, :polls_name, :polls_status, :polls_type, :published_at, :user_id
  include Redmine::SafeAttributes
  
  belongs_to :user
  has_many :poll_questions, :dependent => :destroy,:order => "#{PollQuestion.table_name}.question_number"
  has_many :poll_users, :dependent => :destroy
  has_many :users, :through => :poll_users #该文件被哪些用户提交答案过
  # 添加课程的poll动态
#  has_many :acts, :class_name => 'Activity', :as => :act, :dependent => :destroy
#  after_create :act_as_activity

#  acts_as_event :title => Proc.new {|o| "#{l(:label_my_message)} ##{o.id}: #{o.name}" },
#                :description => :description,
#                :author => :author,
#                :url => Proc.new {|o| {:controller => 'poll', :action => 'show', :id => o.id}}

#  acts_as_activity_provider :type => 'polls',
#                            :permission => :view_course_polls,
                            #:find_options => {:include => [:course, :author]},
                            #:timestamp => "#{self.table_name}.published_at",
#                            :author_key => :author_id

#  def act_as_activity
#    self.acts << Activity.new(:user_id => self.user_id)
#  end

end