Rails 5.1.3 API using Devise Auth Token custom rendering - devise

Question

I'm developing an API using Rails 5.1.3 and I'm using the gem devise_token_auth for authenticate. Everything was working fine until I needed to customize the JSON renderized after an error occurred, like the client sending an request with an invalid email.
So, to do this, I redefined my routes from
mount_devise_token_auth_for 'User', at: 'auth'
to
mount_devise_token_auth_for 'User', at: 'auth', controllers: {
registrations: 'devise/registrations'
}
and created a file app/controllers/devise/registrations_controller.rb as below:
class RegistrationController < DeviseAuthToken::RegistrationController
def render_create_error
render 'devise/registrations/create_error.json'
end
def render_create_success
super
end
end
Now all requests that depends of RegistrationController are getting this error:
ActionView::Template::Error:
undefined method `protect_against_forgery?' for #<#<Class:0x007f84cfab70d8>:0x007f84cec53e10>
What I should do to fix this error?
Thanks in advance!

Answer 1

This is what I did on my rails server (rails 6). I have created folders called overrides where I place all my custom controllers / views
routes.rb
mount_devise_token_auth_for 'User', at: 'auth', controllers: {
registrations: 'overrides/registrations'
}
app/controllers/overrides/registrations_controller.rb
module Overrides
class RegistrationsController < DeviseTokenAuth::RegistrationsController
def render_create_success
render partial: 'overrides/registrations/render_create_success.json.jbuilder'
end
end
end
app/views/overrides/registrations/_render_create_success.json.jbuilder
json.status 'success'
json.data do
json.extract! #resource, :field1, :field2, etc.
end