How do I get all associated models from an ActiveRecord object?

Question

For example, I have

class Order < ActiveRecord::Base
  has_many :shippings
  has_one :contact_information
  belongs_to :shop
end

How to get an array of related objects from Order. for example

Order.associations
# [:shipping, :contact_information, :shop]

+3

Maxim abramchuk 19 nov. 14 at 12:34

1 answer

Andrey Deineko · Accepted Answer · 2014-11-19T13:53:48+0000

Order.reflect_on_all_associations.map(&:class_name)

You can pass the type of the relationship as a parameter: Order.reflect_on_all_associations(:has_one)

EDIT

Just realized you asked about object-associated models.

So, with what I have already shown, you can simply do something along the following lines:

@some_order = Order.first
associated_models = @some_order.class.reflect_on_all_associations.map(&:class_name)