Hello, I'm trying to implement the EAV pattern in ActiveRecord, for that case I've create two models: Product and ProductType and based on what ProductType your product is you get dynamically defined accessors. This way you can use the dynamic attributes by all AR methods, like #update_attributes, etc. But you can't directly pass a hash with dynamic attributes to new.
See the code here: https://github.com/edzhelyov/product_manager/blob/master/app/models/product.rb#L5 And the corresponding test: https://github.com/edzhelyov/product_manager/blob/master/spec/product_spec.rb#L97 The test fails with the following: Failure/Error: product = @pt.products.create :price => 10, :ram => 6.0 ActiveRecord::UnknownAttributeError: unknown attribute: ram # ./app/models/product.rb:6:in `initialize' # ./spec/product_spec.rb:98:in `block (3 levels) in <top (required)>' This is because the AR#initialize try to call #ram= which is not defined yet, if I first try to define the dynamic attributes I don't have access to the product_type relation, interesting thing is that I can't even access it from the attributes when called with this: `@pt.products.create` Does anyone have any idea how I can make this pass ? Thanks, Evgeni -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
