Add this line to your application's Gemfile:
gem 'habtm_generator', :group => :development
And then execute:
rails generate habtm user post
This will generate a migration, for:
- creating table "posts_users" with user_id, post_id, no primary key
- index on both columns
And will copy the "has_and_belongs_to_many :model" into both models (near the top of the models)
This process is reversible (with
rails destroy habtm model1 model2).
- Namespaced models should work (tested in form
admin/post). This will generate more verbose habtm lines in the model, with explicit table names and key names
- Default: adds unique-constraint on index. I find this most useful for most situations. Just remove that from the generated migration before rake db:migrate.