13 lines
420 B
Ruby
13 lines
420 B
Ruby
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class CourseMessage < ActiveRecord::Base
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attr_accessible :course_id, :course_message_id, :course_message_type, :user_id, :viewed
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# 多态 虚拟关联
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belongs_to :course_message ,:polymorphic => true
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belongs_to :course
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belongs_to :user
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validates :user_id,presence: true
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validates :course_id,presence: true
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validates :course_message_id,presence: true
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validates :course_message_type, presence: true
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end
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