Custom devise registration

Question

I'm trying to make an application with devise auth, but i wanna use Inertia + VueJS instead of Rails views. I'm having a hard time to make this work, so far i made the custom controllers using rails generate devise:controllers users

The registrations controller

class Users::RegistrationsController < Devise::RegistrationsController
  before_action :configure_sign_up_params, only: [:create]
  layout false

  # POST /resource
  def create
    super
  end

  protected

  # If you have extra params to permit, append them to the sanitizer.
  def configure_sign_up_params
    devise_parameter_sanitizer.permit(:sign_up, keys: [:name])
  end
end

The routes file

Rails.application.routes.draw do
  devise_for :users, skip: :registrations
  devise_scope :user do
    post 'sign_up', to: 'users/registrations#create'
  end
  root 'home#index'
end

Application Controller

class ApplicationController < ActionController::Base
    before_action :authenticate_user!
    protect_from_forgery prepend: true
end

Ruby version: '2.6.5', Rails Version: '6.0.3.2'

I'm using Insomnia to make the requests, i'm passing just a json with name, email, password and password confirmation. This is the response i had Insomnia Response

Answer 1

This is because you create custom path for user registration, but still use default devise controller inheritance on call super that use default routes helper in some inner functions.

The simplest way to fix it - use devise instead of create your own routes

Remove that

  devise_scope :user do
    post 'sign_up', to: 'users/registrations#create'
  end

And change devise_for

devise_for :users, controllers: {
  registrations: 'users/registrations'
}