Possible to force a migration from the command line?

Question

I made a rookie mistake with a migration yesterday. I amended a migration that had already been uploaded and run, and I forgot to rollback before uploading the new version. Now, the migration is failing because either a column already exists (up) or there is no column to delete (down)!

Is it possible to get a migration to force its changes one time from the console, having to write :force => true within the document first, migrating, and then removing it again? :force => true在文档中写入:force => true ，迁移，然后再次删除它？

Answer 1

回到稳定状态的一种简单方法是在数据库中手动更改添加列以使回滚工作，然后执行回滚并再次向上迁移。