Question

所以我犯了从项目中手动删除迁移文件的愚蠢错误。

它们仍会显示在db:migrate:status中，但如果没有使用MigrationID_somename创建新的空文件，然后在这些占位符上运行destroy，我就无法rollback或destroy它们文件。

有没有更好的方法可以忘记丢失的迁移文件？

me$ rake db:migrate:status

database: [...]/db/development.sqlite3

 Status   Migration ID    Migration Name
--------------------------------------------------
   up     20141203044050  ********** NO FILE **********
   up     20141203044501  ********** NO FILE **********

me$ rake db:migrate:down VERSION=20141203044501
rake aborted!
ActiveRecord::UnknownMigrationVersionError: 

No migration with version number 20141203044501

/Library/Ruby/Gems/2.0.0/gems/activerecord-4.1.6/lib/active_record/migration.rb:932:in `run'
/Library/Ruby/Gems/2.0.0/gems/activerecord-4.1.6/lib/active_record/migration.rb:818:in `run'
/Library/Ruby/Gems/2.0.0/gems/activerecord-4.1.6/lib/active_record/railties/databases.rake:79:in `block (3 levels) in <top (required)>'
Tasks: TOP => db:migrate:down
(See full trace by running task with --trace)

Answer 1

您可能只是使用数据库客户端并从schema_migrations表中删除行（如果您保证永远不会再次执行;）。

如何从项目中删除缺少的迁移？

1 个答案: