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19 lines
769 B
19 lines
769 B
class MigrateShixunStudentWork < ActiveRecord::Migration[5.2]
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def change
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homework_commons = HomeworkCommon.where(homework_type: 4).where("created_at > '2019-07-01 00:00:00'")
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attrs = %i[homework_common_id user_id created_at updated_at]
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StudentWork.bulk_insert(*attrs) do |worker|
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homework_commons.each do |homework|
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course = homework.course
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if course && homework.student_works.count != course.students.count
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course.students.each do |student|
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next if StudentWork.where(homework_common_id: homework.id, user_id: student.user_id).any?
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same_attrs = {user_id: student.user_id}
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worker.add same_attrs.merge(homework_common_id: homework.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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end
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end
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