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class Discipline < ApplicationRecord
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has_many :sub_disciplines, dependent: :destroy
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has_many :shixun_sub_disciplines, -> { where("shixun = 1") }, class_name: "SubDiscipline"
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has_many :subject_sub_disciplines, -> { where("subject = 1") }, class_name: "SubDiscipline"
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has_many :question_sub_disciplines, -> { where("question = 1") }, class_name: "SubDiscipline"
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end
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