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class ShixunWorkComment < ApplicationRecord
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belongs_to :student_work
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belongs_to :user
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belongs_to :challenge, optional: true
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validates :comment, length: { maximum: 500, too_long: "不能超过500个字符" }
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validates :hidden_comment, length: { maximum: 500, too_long: "不能超过500个字符" }
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end
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