CODEWITHSUNDEEP
ruby-on-railspolymorphism
sarunw
sarunw

Reputation: 8176

How to find polymorphic relation

class Item < ActiveRecord::Base
belongs_to :rulable, :polymorphic => true
end
class foo < ActiveRecord::Base
has_many :items, :as => rulable
end
class bar < ActiveRecord::Base
has_many :items, :as => rulable
end

What is the best way to find items belonging to a foo? I'm currently using something like this:

f = Foo.find 1
Item.find_by_rulable_id_and_rulable_type(f, 'Foo')

Upvotes: 1

Views: 747

Answers (1)

EmFi
EmFi

Reputation: 23450

The following is semantically equivalent and much easier to read and type.

f = Foo.find 1
f.items

Upvotes: 1

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