Not fully understanding your problem, have you tried named_scope? On Jan 26, 9:50 am, Rodrigo Pavano <rodrigopav...@gmail.com> wrote: > Hello! > > Im using ruby 1.9.2 and Rails 3.0.3. > > I have the following models > > class Property < ActiveRecord::Base > class Feature < ActiveRecord::Base > class DefaultFeature < Feature > class CustomFeature < Feature > class PropertyFeature < ActiveRecord::Base > > One Property can have many Features, and one Feature is associated with many > Properties (joined through PropertyFeature model). There are two kinds of > Features: DefaultFeatures and CustomFeatures, for what Im using single table > inheritance. Both kinds of Features have exactly the same fields, but i need > to differentiate them in my application. > What i want to achieve, if possible, is being able to access Features from a > Property instance like this: > a_property.features > a_property.custom_features > a_property.default_features > > And also add features to a property: > a_property.custom_features << CustomFeature.new > a_property.features << CustomFeature.new > > The closest solution i could think of is this one:http://pastie.org/1499280 > > The problem I'm having is that when i call a_property.custom_features it > brings all features from the property: custom AND default ones. > I've already tried making polymorphic the belongs_to :feature association > in the PropertyFeature model, but it raised an > ActiveRecord::HasManyThroughAssociationPolymorphicError exception, so i > assume rails is not supposed to work like that. > > I'd appreciate any help on how to do this (i've tried everything i could > think of). Maybe my approach is wrong to begin with, in which case i'd love > to hear a better way to to this. > > thanks! > > -- > rodrei
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