21 lines
664 B
Ruby
21 lines
664 B
Ruby
class SystemMessage < ActiveRecord::Base
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attr_accessible :content, :id, :user_id, :description, :subject
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belongs_to :user
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validates :subject, presence: true
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# validates :description, presence: true
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validates_length_of :description, maximum: 10000
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has_many :message_alls, :class_name => 'MessageAll',:as =>:message, :dependent => :destroy
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acts_as_attachable
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# 系统消息放置总消息列表
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after_create :add_system_message
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def add_system_message
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if MessageAll.where("message_type = '#{self.class.to_s}' and message_id = '#{self.id}'").first.nil?
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self.message_alls << MessageAll.new(:user_id => self.user_id)
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end
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end
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end
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