socialforge/app/models/students_for_course.rb

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