Show/hide payment methods if voucher changes order total to zero

app/controllers/voucher_adjustments_controller.rb

@@ -6,8 +6,9 @@ class VoucherAdjustmentsController < BaseController
   def create
     if add_voucher
       VoucherAdjustmentsService.calculate(@order)
+      @order.update_totals_and_states
 
-      render_voucher_section
+      update_payment_section
     elsif @order.errors.present?
       render_error
     end
@@ -16,7 +17,7 @@ class VoucherAdjustmentsController < BaseController
   def destroy
     @order.voucher_adjustments.find_by(id: params[:id])&.destroy
 
-    render_voucher_section
+    update_payment_section
   end
 
   private
@@ -49,13 +50,10 @@ class VoucherAdjustmentsController < BaseController
     true
   end
 
-  def render_voucher_section
+  def update_payment_section
     render cable_ready: cable_car.replace(
-      selector: "#voucher-section",
-      html: render_to_string(
-        partial: "split_checkout/voucher_section",
-        locals: { order: @order,voucher_adjustment: @order.voucher_adjustments.first }
-      )
+      selector: "#checkout-payment-methods",
+      html: render_to_string(partial: "split_checkout/payment", locals: { step: "payment" })
     )
   end
 

app/views/split_checkout/_payment.html.haml

@@ -1,9 +1,9 @@
-.medium-6
+.medium-6#checkout-payment-methods
   - if @order.distributor.vouchers.present?
     %div.checkout-substep
       = render partial: "split_checkout/voucher_section", locals: { order: @order, voucher_adjustment: @order.voucher_adjustments.first }
 
-  = form_with url: checkout_update_path(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: { remote: "true" } do |f|
     %div.checkout-substep{"data-controller": "paymentmethod"}
       %div.checkout-title
         = t("split_checkout.step2.payment_method.title")