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# container_type:
# Phone-手机注册； ； ； ；
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class Grade < ActiveRecord :: Base
attr_accessible :container_id , :container_type , :score , :user_id
belongs_to :user
has_many :tidings , :as = > :container , :dependent = > :destroy
after_create :send_tiding
def send_tiding
self . tidings << Tiding . new ( :user_id = > self . user_id , :trigger_user_id = > 0 , :parent_container_id = > self . container_id ,
:parent_container_type = > self . container_type , :viewed = > 0 , :tiding_type = > " System " )
end
end
