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educoder/db/migrate/20190508090916_migrate_new_...

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class MigrateNewStudentWorkStatus < ActiveRecord::Migration[5.2]
def change
homeworks = HomeworkCommon.where(allow_late: 0)
StudentWork.where(homework_common_id: homeworks, work_status: 2).update_all(work_status: 1)
end
end