8 lines
214 B
Ruby
8 lines
214 B
Ruby
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class CourseActivity < ActiveRecord::Base
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attr_accessible :user_id, :course_act_id,:course_act_type,:course_id
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# 虚拟关联
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belongs_to :act ,:polymorphic => true
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belongs_to :course
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belongs_to :user
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end
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