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11 lines
518 B
11 lines
518 B
5 years ago
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class MigrateExerciseShixunAnswerComment < ActiveRecord::Migration[5.2]
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def change
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ExerciseAnswerComment.where.not(exercise_shixun_answer_id: ExerciseShixunAnswer.all).where("exercise_shixun_answer_id is not null and exercise_answer_id is not null").each do |answer|
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exercise_shixun_answer = ExerciseShixunAnswer.find_by(id: answer.exercise_answer_id)
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if exercise_shixun_answer.present?
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answer.update_columns(exercise_shixun_answer_id: exercise_shixun_answer&.id)
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end
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end
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end
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end
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