Relations is a gem to generate associations between models in a Rails application. With a simple command you can generate the migration and add the associations to the models involved.
You can use relations gem with any rails version major to 3.0:
gem install relations
After you install Relations and add it to your Gemfile, you could use it in the following way:
rails generate relation model_one relation_type model_two
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Both models should be created before you can generate the relation.
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Both model’s names should be in the singular form.
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Sopported Relations types:
has_many belongs_to has_one has_and_belongs_to_many
For instance:
rails g relation user has_many task
It should:
* generate a migration “db/migration/***_relate_users_to_tasks.rb”
* add “has_many :tasks” line to app/models/user.rb
* add “belongs_to :user” line to app/models/task.rb
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Alvaro Muhlethaler (github.com/vairix-amuhlethaler)
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Sebastián Sierra (github.com/vairix-ssierra)
MIT License. Copyright 2011 VAIRIX Software Development. www.vairix.com