You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
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class CourseVideo < ApplicationRecord
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belongs_to :course
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belongs_to :video, optional: true
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belongs_to :user, optional: true
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validates :title, length: { maximum: 60, too_long: "不能超过60个字符" }
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end
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