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class ContestMessage < ActiveRecord :: Base
# Work： ：
# nil： ； ： ！ ； ： ； ： ； ：
attr_accessible :content , :contest_message_id , :contest_message_type , :status , :viewed , :user_id , :contest_id
belongs_to :contest_message , :polymorphic = > true
belongs_to :user
belongs_to :contest
has_many :message_alls , :class_name = > 'MessageAll' , :as = > :message , :dependent = > :destroy
validates :user_id , presence : true
validates :contest_id , presence : true
validates :contest_message_id , presence : true
validates :contest_message_type , presence : true
after_create :add_user_message
def add_user_message
if MessageAll . where ( " message_type = ' #{ self . class . to_s } ' and message_id = ' #{ self . id } ' " ) . first . nil? && self . status != 9
self . message_alls << MessageAll . new ( :user_id = > self . user_id )
end
end
end
