I'm writing an API and want to be able to pass in the attributes of a model without prefixing them with the name of the model.

I wrote this little extension to `ActiveRecord` in order to make it happen:

    module ActiveRecord
      class Base
        def self.filter_attributes(hash)
          hash.stringify_keys.slice(*self.accessible_attributes.to_a)
        end
      end
    end

And I use it like this:

    class IdeaController < ActiveRecord::Base
      def create
        @idea = Idea.create(Idea.filter_parameters(params))
        respond_with @idea
      end
    end

I have two questions:

1. What do you think about the name of the method? `filter_parameters()` seemed to make sense, but it's a little generic.

2. Are there uses of this that I'm not thinking of and that would cause problems, such as passing in nested attributes?