Creating Relationship Links Between Models

The Model Dependency diagram reflects links between the models, specified in the source code.

To show relationship links between models, follow these general steps

Open for editing the desired model classes. You can do that by choosing a model class in the Rails view, or in the Model Dependency diagram, and pressing ⌘↓F4F3F4F4.

In the editor, add relationship statements to the respective classes. For example:

class Owner < ActiveRecord::Base
    attr_accessible :first_name, :last_name, :pet_name
            has_many :pets
            end
...
class Pet < ActiveRecord::Base
    attr_accessible :age, :nickname, :species, :owner
            belongs_to :owner
            end

Switch to the Model Dependency diagram, and see the relationship links between the models, with edge labels.