试卷成绩迁移

db/migrate/20191204030230_migrate_exercise_single_question_score.rb

@@ -0,0 +1,18 @@
+class MigrateExerciseSingleQuestionScore < ActiveRecord::Migration[5.2]
+  def change
+    exercise_answers = ExerciseAnswer.joins(:exercise_question).where("exercise_answers.created_at > '2019-11-01 00:00:00'").where(score: -1, exercise_questions: {question_type: [0, 2]})
+    exercise_answers.includes(:exercise_choice, exercise_question: :exercise_standard_answers).find_each do |answer|
+
+      question = answer.exercise_question
+      exercise_user = ExerciseUser.find_by(exercise_id: question.exercise_id, user_id: answer.user_id)
+      user_choice_position = answer.exercise_choice&.choice_position
+
+      if user_choice_position && (user_choice_position.to_i == question.exercise_standard_answers.take&.exercise_choice_id.to_i) && exercise_user
+        answer.update!(score: question.question_score)
+        score = exercise_user.score + question.question_score
+        objective_score = exercise_user.objective_score + question.question_score
+        exercise_user.update!(score: score, objective_score: objective_score)
+      end
+    end
+  end
+end