2013-09-12 10:41:15 +08:00
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class StudentsForCourse < ActiveRecord::Base
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attr_accessible :course_id, :student_id
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2014-06-16 17:14:05 +08:00
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belongs_to :course, :class_name => 'Course', :foreign_key => :course_id
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2013-09-12 10:41:15 +08:00
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belongs_to :student, :class_name => 'User', :foreign_key => :student_id
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validates_presence_of :course_id, :student_id
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validates_uniqueness_of :student_id, :scope => :course_id
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end
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