class UserFeedbackMessage < ActiveRecord::Base attr_accessible :journals_for_message_id, :journals_for_message_type, :user_id, :viewed belongs_to :journals_for_message belongs_to :user has_many :message_alls, :class_name => 'MessageAll',:as =>:message, :dependent => :destroy validates :user_id,presence: true validates :journals_for_message_id,presence: true validates :journals_for_message_type, presence: true after_save :add_user_message def add_user_message if MessageAll.where("message_type = '#{self.class.to_s}' and message_id = '#{self.id}'").first.nil? self.message_alls << MessageAll.new(:user_id => self.user_id) end end end