Switch branches/tags
Find file
Fetching contributors…
Cannot retrieve contributors at this time
60 lines (46 sloc) 2.41 KB


  • This version is designed to support all current development versions of Mongoid 2.0. The inclusion of the mongoid dependency has been removed.

  • In 2.0.0.rc.1, Mongoid::Config changed from a Class to a Module.

  • In your application, please be sure to require mongoid before mongoid_rails_migrations. Again, this is necessary to support both pre/post 2.0.0.rc.1. I plan on fixing the ugly once mongoid goes 2.0 final.


  • Data migrations for Mongoid.


  • You need to rearrange or split data

  • You have model instances which you leverage as schema data


  • rails ~> 3.0.0

  • mongoid ~> 2.0.0 (this isn't currently enforced)


  • gem install mongoid_rails_migrations

  • In your Gemfile, include (after including mongoid): gem “mongoid_rails_migrations”, “>=0.0.2” # or whatever the current version happens to be


  • generator:

    • rails generate mongoid:migration your_migration_name_here

  • migrations (tested):

    • db:migrate

    • db:migrate:down

    • db:migrate:up

    • db:rollback

    • db:migrate:redo

    • db:migrate:reset

    • db:reseed (handled by mongoid)

    • db:version (added to glean current migration)


  • Only tested with ruby 1.9.1


* rails
* mongoid

Much of this gem simply modifies existing code from both projects. With that out of the way, on to the license.


Copyright © 2010: Alan Da Costa

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

The software is provided 'as is', without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In no event shall the authors or copyright holders be liable for any claim, damages or other liability, whether in an action of contract, tort or otherwise, arising from, out of or in connection with the software or the use or other dealings in the software.