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12 lines
334 B
12 lines
334 B
6 years ago
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class ModifyChallengeIdForDiscusses < ActiveRecord::Migration[5.2]
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def change
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discusses = Discuss.where(challenge_id: nil)
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discusses.each do |dis|
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challenge_id = Shixun.find(dis.dis_id).challenges.first.id
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dis.update_column(:challenge_id, challenge_id)
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end
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add_index :discusses, :challenge_id
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end
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end
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