mini_record brings schema declarations back to your model

From Davide D’Agostino, mini_record brings schema declarations back to your ActiveRecord models in the style of DataMapper, MongoMapper, and others:

class Post < ActiveRecord::Base
  key :title
  key :permalink, :index => true, :limit => 50
  key :comments_count, :as => :integer
  key :category, :as => :references, :index => true
end
Post.auto_upgrade!

when you execute MyModel.auto_upgrade!, missing columns, indexes and tables will be created on the fly. Indexes and columns present in the db but not in your model schema will be deleted* also in your db.

Don’t go installing in your production apps just yet. Check out the extensive README for advanced usage.