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class ChallengeChoose < ApplicationRecord
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default_scope {order("challenge_chooses.position asc")}
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belongs_to :challenge, optional: true
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has_many :challenge_tags, :dependent => :destroy
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has_many :challenge_questions, dependent: :destroy
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validates :subject, length: { maximum: 1000, too_long: "不能超过1000个字符" }
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end
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