6

I've been using plain Ruby form objects in rails, but to keep my code organized, I've ended up having to add a ton of namespaces to them. So I'll have a form like:

class User::Registration::NewForm
  extend Forwardable
  extend ActiveModel::Naming
  extend ActiveModel::Callbacks
  include ActiveModel::Conversion
  include ActiveModel::Validations

  ...
end

The annoyance with this is that the param_key for my forms becomes kind of daunting, e.g. user_registration_new_form

I'd like to override this somehow, and I think I need to mess with the model_name and/or param_key methods from ActiveModel::Naming (http://apidock.com/rails/ActiveModel/Naming/param_key/class). But I can't get it to work.

Has anyone been able to successfully override the default param_key for a model?

Bryce
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1 Answers1

6

Gah, I finally got it! You just need to define a class model_name method, and return an ActiveModel::Name object.

So something like:

self.model_name
  ActiveModel::Name.new(User)
end
Bryce
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  • I had to do `::ActiveModel::Name.new(User)` otherwise `uninitialized constant Reform::Form::ActiveModel::Name`. – Zubin Feb 02 '16 at 10:25
  • You can also do something like: `def model_name; Struct.new(:param_key, :name).new('form', 'form'); end`. – Kris Oct 22 '18 at 17:04