attribute filter concept for mass assignment

attribute_filter.rb

class UserAttributeFilter < AttributeFilter::Filter
  strategy :whitelist,
    attributes: [:first_name, :last_name, :login, :password, :password_confirmation]
end

u = User.new({protected_attribute: "blah", first_name: "John"}, filter: UserAttributeFilter)

# u.attributes => {first_name: "John"}

I like it. IMHO, way better than using Controllers for that.

Like the idea, would rather it be in the model. See my fork.

@bhuga I like that DSL a lot - I definitely think we can get there with the current implementation. I'd love both of your feedback @ the earlier library I'm putting together: https://github.com/EnlightSolutions/attribute_filter