Handle user registration with turbo stream

app/controllers/spree/users_controller.rb

@@ -3,7 +3,6 @@
 module Spree
   class UsersController < ::BaseController
     include I18nHelper
-    include CablecarResponses
 
     layout 'darkswarm'
 
@@ -25,34 +24,14 @@ module Spree
       @unconfirmed_email = spree_current_user.unconfirmed_email
     end
 
-    # Endpoint for queries to check if a user is already registered
-    def registered_email
-      registered = Spree::User.find_by(email: params[:email]).present?
-
-      if registered
-        render status: :ok, cable_ready: cable_car.
-          inner_html(
-            "#login-feedback",
-            partial("layouts/alert",
-                    locals: { type: "alert", message: t('devise.failure.already_registered') })
-          ).
-          dispatch_event(name: "login:modal:open")
-      else
-        head :not_found
-      end
-    end
-
     def create
       @user = Spree::User.new(user_params)
 
       if @user.save
         flash[:success] = t('devise.user_registrations.spree_user.signed_up_but_unconfirmed')
-        render cable_ready: cable_car.redirect_to(url: main_app.root_path)
+        redirect_to main_app.root_path
       else
-        render status: :unprocessable_entity, cable_ready: cable_car.morph(
-          "#signup-tab",
-          partial("layouts/signup_tab", locals: { signup_form_user: @user })
-        )
+        render :create, status: :unprocessable_entity
       end
     end
 
@@ -97,14 +76,7 @@ module Spree
     end
 
     def render_alert_timestamp_error_message
-      render cable_ready: cable_car.inner_html(
-        "#signup-feedback",
-        partial("layouts/alert",
-                locals: {
-                  type: "alert",
-                  message: InvisibleCaptcha.timestamp_error_message
-                })
-      )
+      render :render_alert_timestamp_error_message
     end
   end
 end

app/views/layouts/_signup_tab.html.haml

@@ -1,14 +1,14 @@
 - signup_form_user = Spree::User.new if local_assigns[:signup_form_user].nil?
 
 #signup-tab
-  = form_with model: signup_form_user, url: spree.account_path, scope: :user, data: { remote: "true" } do |form|
+  = form_with model: signup_form_user, url: spree.account_path, scope: :user, data: { turbo: true } do |form|
     .row
       .large-12.columns#signup-feedback
 
     .row
       .large-12.columns
         = form.label :email, t(:signup_email)
-        = form.email_field :email, { tabindex: 1, "data-login-modal-target": "email", "data-action": "input->login-modal#emailOnInput" }
+        = form.email_field :email, { tabindex: 1 }
         = form.error_message_on :email
     .row
       .large-12.columns

app/views/spree/users/create.turbo_stream.haml

@@ -0,0 +1,2 @@
+= turbo_stream.update 'signup-tab' do
+  = render partial: 'layouts/signup_tab', locals: { signup_form_user: @user }

app/views/spree/users/render_alert_timestamp_error_message.turbo_stream.haml

@@ -0,0 +1,3 @@
+= turbo_stream.update 'signup-feedback' do
+  = render  partial: 'layouts/alert',
+                locals: { type: "alert", message: InvisibleCaptcha.timestamp_error_message }

config/routes.rb

@@ -16,7 +16,6 @@ Openfoodnetwork::Application.routes.draw do
 
   get "/register", to: "registration#index", as: :registration
   get "/register/auth", to: "registration#authenticate", as: :registration_auth
-  post "/user/registered_email", to: "spree/users#registered_email"
   resources :locales, only: [:show]
 
   # Redirects to global website

spec/controllers/spree/users_controller_spec.rb

@@ -55,22 +55,6 @@ RSpec.describe Spree::UsersController do
     end
   end
 
-  describe "#registered_email" do
-    routes { Openfoodnetwork::Application.routes }
-
-    let!(:user) { create(:user) }
-
-    it "returns ok (200) if email corresponds to a registered user" do
-      post :registered_email, params: { email: user.email }
-      expect(response).to have_http_status(:ok)
-    end
-
-    it "returns not_found (404) if email does not correspond to a registered user" do
-      post :registered_email, params: { email: 'nonregistereduser@example.com' }
-      expect(response).to have_http_status(:not_found)
-    end
-  end
-
   describe '#load_object' do
     it 'redirects to signup path if user is not found' do
       allow(controller).to receive_messages(spree_current_user: nil)