24 lines
676 B
Ruby
24 lines
676 B
Ruby
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class DeleteExcessStudentWorks < ActiveRecord::Migration
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def up
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homework = HomeworkCommon.where(:id => 4818)
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unless homework.empty?
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homework = homework.first
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homework.course.student.each do |student|
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student_works = homework.student_works.where(:user_id => student.student_id).reorder("created_at asc")
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if student_works.count > 1
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if student_works.first.work_status != 0
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student_works.last.destroy
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elsif student_works.last.work_status != 0
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student_works.first.destroy
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else
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student_works.first.destroy
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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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def down
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end
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end
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