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POmongoid polymorphic association error
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2012-09-24T14:49:31.813
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2012-09-24T15:45:38.323
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I'm having some problems using mongoid-3.0.6 with polymorphic fields. Using rails 3.2.8 and ruby 1.9.3 Using a normal polymorphic relation: <pre><code>class Shirt include Mongoid::Document field :name, localize: true belongs_to :itemizable, polymorphic: true end class Item include Mongoid::Document field :price, type: Float field :quantity, type: Integer, :default => 1 has_one :product, as: :itemizable accepts_nested_attributes_for :product end </code></pre> The same association is available through the metadata: <pre><code>>> Item.reflect_on_association(:product) #<Mongoid::Relations::Metadata autobuild: false, class_name: Product, cyclic: nil, dependent: nil, inverse_of: nil, key: _id, macro: has_one, name: product, order: nil, polymorphic: true, relation: Mongoid::Relations::Referenced::One, setter: product=, versioned: false> >> item = Item.new #<Item _id: 50606c1668ce87692e000003, _type: nil, created_at: nil, updated_at: nil, deleted_at: nil, price: nil, quantity: 1> </code></pre> but when i run <pre><code>>> item.product = Shirt.new or >> item.build_product </code></pre> i got always the same error <pre><code>NameError: uninitialized constant Product </code></pre> <a href="https://gist.github.com/3776248" rel="nofollow">Full stack error</a> Any thoughts? Thanks in advance. Solved <ul> <li>Found the motive</li> </ul> Need to add the class_name to the relation <pre><code>has_one :product, as: :itemizable, class_name: "Toy" </code></pre>
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<mongoid><ruby-on-rails-3.2>
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mongoid polymorphic association error
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1. CO- Found the motive Need to add the class_name to the relation has_one :product, as: :itemizable, class_name: "Toy"
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