Rails 3 删除的迁移文件不断返回
我有相同迁移的两个版本（我知道这是坏习惯）。我多次删除旧版本，但是在重新启动我的项目（或对其执行某些操作，例如 rake db:test:prepare）后，该文件显示在我的迁移文件夹中。当我运行 rake db:migrate 时，它会抱怨同名的多个迁移。
如何彻底删除迁移文件？是否有需要删除的注册表以防止其再次出现？
I have 2 versions of the same migration (bad habit, I know). I deleted old version many times, but after restarting my project (or do something with it, like rake db:test:prepare), the file shows up in my migrate folder. When I run rake db:migrate, it will complain about multiple migrations with the same name.
How can I delete a migration file completely? Is there a registry that I need to remove to prevent it from coming back?
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您是从存储库更新吗？我不知道如何才能恢复原始文件。
您还可以从 schema_migration 表中删除该条目，但这只是跟踪它是否已运行（IIRC）。
Are you updating from a repo? I don't see how the original file could be restored otherwise.
You can also delete the entry from the schema_migration table, but that just tracks if it's been run or not (IIRC).
git add仅添加新文件和更改的文件，不会删除已删除的文件。删除：或者如果您已经从文件系统中删除它：
git addonly adds new and changed files, it doesn't remove deleted ones. To delete:or if you have already deleted it from the filesystem: