Question

Using the ActiveAttr:

class Filter
  include ActiveAttr::Model
  attribute term
  # Overriding to_key, to_param, model_name, param_key etc doesn't help :(
end

class SpecialFilter < Filter
end

How do I override the ActiveModel to generate the (same) predefined input names for all subclasses?

= form_for SpecialFilter.new, url: 'xx' do |f|
  = f.text_field :term

So instead of <input name='special_filter[term]' /> I need to get <input name='filter[term]' />

NOTE: The scenario is way much more complicated (with simple_form and radios/checkboxes/dropdowns etc), so please do not suggest to change the name of the class or similar workarounds. I really do need to have the consistent name to be used by the form builder.

Answer 1

Try this :

= form_for SpecialFilter.new, as: 'filter', url: 'xx' do |f|
  = f.text_field :term