数据迁移

2016-05-13 20:12:56 +08:00 · 2016-05-13 20:12:56 +08:00 · baaff3f988
parent c25b63a254
commit baaff3f988
1 changed files with 2 additions and 2 deletions
--- a/db/migrate/20160513120002_delete_empty_apply_homework.rb
+++ b/db/migrate/20160513120002_delete_empty_apply_homework.rb
@ -4,8 +4,8 @@ class DeleteEmptyApplyHomework < ActiveRecord::Migration
    transaction do
      for i in 1 ... count do i
        ApplyHomework.page(i).per(30).each do |ah|
-          homework = HomeworkCommon.find ah.homework_common_id
-          if homework.nil?
+          homework = HomeworkCommon.where("id = ?",ah.homework_common_id)
+          if homework.empty?
            ah.destroy
          end
        end