retrieve form error in front office

core/lib/Thelia/Core/Event/ActionEvent.php

@@ -47,6 +47,8 @@ abstract class ActionEvent extends Event
      */
     protected $action;
 
+    protected $form;
+
     /**
      *
      * @param \Symfony\Component\HttpFoundation\Request $request
@@ -75,4 +77,21 @@ abstract class ActionEvent extends Event
     {
         return $this->request;
     }
+
+    public function setFormError($form)
+    {
+        $this->form = $form;
+        $this->stopPropagation();
+    }
+
+    public function getForm()
+    {
+        return $this->form;
+    }
+
+    public function hasFormError()
+    {
+        return $this->form !== null;
+    }
+
 }

core/lib/Thelia/Core/EventListener/ControllerListener.php

@@ -46,7 +46,14 @@ class ControllerListener implements EventSubscriberInterface
         if (false !== $action = $request->get("action")) {
            //search corresponding action
             $event = new ActionEventFactory($request, $action, $event->getKernel()->getContainer()->getParameter("thelia.actionEvent"));
-            $dispatcher->dispatch("action.".$action, $event->createActionEvent());
+            $actionEvent = $event->createActionEvent();
+            $dispatcher->dispatch("action.".$action, $actionEvent);
+
+            if ($actionEvent->hasFormError()) {
+                $request->getSession()->set("form_error", true);
+                $request->getSession()->set("form_name", $actionEvent->getForm()->createView()
+                    ->vars["attr"]["thelia_name"]);
+            }
         }
 
     }

core/lib/Thelia/Core/Template/Smarty/Plugins/Form.php

@@ -88,8 +88,14 @@ class Form implements SmartyPluginInterface
             }
 
             $instance = $this->getInstance($params['name']);
+            $form = $instance->getForm();
 
-            $template->assign("form", $instance->getForm()->createView());
+            if (true === $this->request->getSession()->get("form_error", false) && $this->request->getSession()->get
+                    ("form_name") == $instance->getName()) {
+                $form->bind($this->request);
+            }
+
+            $template->assign("form", $form->createView());
         } else {
             return $content;
         }
@@ -202,7 +208,10 @@ class Form implements SmartyPluginInterface
         $class = new \ReflectionClass($this->formDefinition[$name]);
 
 
-        return $class->newInstance($this->request);
+        return $class->newInstance(
+            $this->request,
+            "form"
+        );
     }
 
     /**