nip*_*ese 3 rails-migrations ruby-on-rails-4
所以我犯了从我的项目中手动删除迁移文件的愚蠢错误。
他们还在露面db:migrate:status，但我不能够rollback或者destroy他们没有与MigrationID_somename创建新的空文件，然后运行摧毁这些占位符文件。
有没有更好的方法来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)