Handle order checkout responses with turbo_stream

app/controllers/checkout_controller.rb

@@ -10,7 +10,6 @@ class CheckoutController < BaseController
   include CheckoutCallbacks
   include CheckoutSteps
   include OrderCompletion
-  include CablecarResponses
   include WhiteLabel
 
   helper 'terms_and_conditions'
@@ -49,7 +48,7 @@ class CheckoutController < BaseController
   rescue Spree::Core::GatewayError => e
     flash[:error] = I18n.t(:spree_gateway_error_flash_for_checkout, error: e.message)
     @order.update_column(:state, "payment")
-    render cable_ready: cable_car.redirect_to(url: checkout_step_path(:payment))
+    redirect_to checkout_step_path(:payment)
   end
 
   private
@@ -57,9 +56,12 @@ class CheckoutController < BaseController
   def render_error
     flash.now[:error] ||= I18n.t('checkout.errors.saving_failed')
 
-    render status: :unprocessable_entity, cable_ready: cable_car.
-      replace("#checkout", partial("checkout/checkout")).
-      replace("#flashes", partial("shared/flashes", locals: { flashes: flash }))
+    respond_to do |format|
+      format.html { head :unprocessable_entity }
+      format.turbo_stream do
+        render :render_error, status: :unprocessable_entity
+      end
+    end
   end
 
   def check_payments_adjustments
@@ -87,7 +89,7 @@ class CheckoutController < BaseController
     return unless selected_payment_method&.external_gateway?
     return unless (redirect_url = selected_payment_method.external_payment_url(order: @order))
 
-    render cable_ready: cable_car.redirect_to(url: redirect_url)
+    redirect_to redirect_url
     true
   end
 

app/controllers/concerns/order_stock_check.rb

@@ -1,7 +1,6 @@
 # frozen_string_literal: true
 
 module OrderStockCheck
-  include CablecarResponses
   extend ActiveSupport::Concern
 
   def valid_order_line_items?
@@ -27,13 +26,7 @@ module OrderStockCheck
     current_order.set_order_cycle! nil
 
     flash[:info] = I18n.t('order_cycle_closed')
-    respond_to do |format|
-      format.cable_ready {
-        render status: :see_other, cable_ready: cable_car.redirect_to(url: main_app.shop_path)
-      }
-      format.json { render json: { path: main_app.shop_path }, status: :see_other }
-      format.html { redirect_to main_app.shop_path, status: :see_other }
-    end
+    redirect_to main_app.shop_path
   end
 
   private

app/controllers/spree/orders_controller.rb

@@ -4,7 +4,6 @@ module Spree
   class OrdersController < ::BaseController
     include OrderCyclesHelper
     include Rails.application.routes.url_helpers
-    include CablecarResponses
     include WhiteLabel
 
     layout 'darkswarm'
@@ -107,8 +106,7 @@ module Spree
       else
         flash[:error] = I18n.t(:orders_could_not_cancel)
       end
-      render status: :found,
-             cable_ready: cable_car.redirect_to(url: request.referer || main_app.order_path(@order))
+      redirect_to request.referer || main_app.order_path(@order)
     end
 
     private

app/views/checkout/_details.html.haml

@@ -1,4 +1,4 @@
-= form_with url: checkout_update_path(checkout_step), model: @order, method: :put, data: { remote: "true" } do |f|
+= form_with url: checkout_update_path(checkout_step), model: @order, method: :put, data: { turbo: true } do |f|
   .medium-6
     = f.fields :bill_address, model: @order.bill_address do |bill_address|
       %div.checkout-substep

app/views/checkout/_payment.html.haml

@@ -3,7 +3,7 @@
     %div.checkout-substep
       = render partial: "checkout/voucher_section", locals: { order: @order, voucher_adjustment: @order.voucher_adjustments.first }
 
-  = form_with url: checkout_update_path(local_assigns[:step] || checkout_step), model: @order, method: :put, data: { remote: "true" } do |f|
+  = form_with url: checkout_update_path(local_assigns[:step] || checkout_step), model: @order, method: :put, data: { turbo: "true" } do |f|
     %div.checkout-substep{"data-controller": "paymentmethod"}
       %div.checkout-title
         = t("checkout.step2.payment_method.title")

app/views/checkout/_summary.html.haml

@@ -1,4 +1,4 @@
-= form_with url: checkout_update_path(checkout_step), model: @order, method: :put, data: { remote: "true", 'guest-checkout-target': 'summary' } do |f|
+= form_with url: checkout_update_path(checkout_step), model: @order, method: :put, data: { turbo: "true", 'guest-checkout-target': 'summary' } do |f|
   .summary-main
     = render partial: "checkout/already_ordered" if show_bought_items? && checkout_step?(:summary)
     .checkout-substep

app/views/checkout/render_error.turbo_stream.haml

@@ -0,0 +1,4 @@
+= turbo_stream.replace "flashes" do
+	= render(partial: 'shared/flashes', locals: { flashes: flash })
+= turbo_stream.replace "checkout" do
+	= render(partial: 'checkout/checkout')