#4665 : Don't show popup if no payments line, and do not remove payment lines on…

#4665 : Don't show popup if no payments line, and do not remove payment lines on payment screen start

lacagette_addons/lacagette_custom_pos/static/src/js/backend.js

@@ -144,9 +144,12 @@ odoo.define('lacagette_custom_pos.DB', function(require) {
             payment_this = self;
             $('.payment-screen .top-content .back').off();
             $(document).on('click', '.payment-screen .top-content .back', function(event){
-              self.gui.show_popup('custom-return-to-order');
+              if (payment_this.pos.get_order().get_paymentlines().length > 0) {
+                self.gui.show_popup('custom-return-to-order');
+              } else {
+                self.gui.show_screen("products");
+              }
             });
-            empty_payments_lines();
       }
     })