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21 lines
827 B
21 lines
827 B
class ModifyCourseGroupForCourses < ActiveRecord::Migration[5.2]
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def change
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groups = CourseGroup.where(course_id:3429).order("created_at desc").group(:name)
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ActiveRecord::Base.transaction do
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groups.each do |g|
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CourseGroup.where(name: g.name).where.not(id: g.id).each do |cg|
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cg.course_members.each do |cm|
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cm.update_attributes!(course_group_id: g.id)
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end
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cg.exercise_group_settings.update_all(course_group_id: g.id)
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cg.attachment_group_settings.update_all(course_group_id: g.id)
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cg.homework_group_reviews.update_all(course_group_id: g.id)
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cg.homework_group_settings.update_all(course_group_id: g.id)
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cg.teacher_course_groups.update_all(course_group_id: g.id)
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cg.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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