Merge pull request #4 in SUNSHINE/formz from bugfix/SUN-4277-formz-er…

…ror-ajax to wip/steps

* commit '16bc0228b8c643fb4e9507bb15d0a2393021c197':
  [FEATURE] Dispatch signal when error occurs during Ajax validation
  [BUGFIX] Handle data mapping error in Ajax validation

Classes/Controller/AjaxValidationController.php

@@ -21,6 +21,7 @@
 use Romm\Formz\Exceptions\ClassNotFoundException;
 use Romm\Formz\Exceptions\EntryNotFoundException;
 use Romm\Formz\Exceptions\InvalidArgumentTypeException;
+use Romm\Formz\Exceptions\InvalidArgumentValueException;
 use Romm\Formz\Exceptions\InvalidConfigurationException;
 use Romm\Formz\Exceptions\MissingArgumentException;
 use Romm\Formz\Form\Definition\Field\Validation\Validator;
@@ -49,6 +50,7 @@
 class AjaxValidationController extends ActionController
 {
     const DEFAULT_ERROR_MESSAGE_KEY = 'default_error_message';
+    const MAPPING_ERROR = 'MappingError';
 
     /**
      * @var Request
@@ -229,6 +231,24 @@ public function runAction($name, $className, $fieldName, $validatorName, $formzD
         $this->result->merge($result);
     }
 
+    /**
+     * If an error occurs, that must be because the mapping of the arguments
+     * failed somehow. Therefore we override the default behaviour (forward to
+     * referring request) and we throw an exception instead.
+     *
+     * @throws InvalidArgumentValueException
+     */
+    public function errorAction()
+    {
+        $this->signalSlotDispatcher->dispatch(
+            __CLASS__,
+            self::MAPPING_ERROR,
+            [$this->arguments->getValidationResults()]
+        );
+
+        throw InvalidArgumentValueException::ajaxDataMapperError($this->arguments->getValidationResults()->getFlattenedErrors());
+    }
+
     /**
      * Will call all middlewares of the form.
      *

Classes/Exceptions/InvalidArgumentValueException.php

@@ -16,6 +16,7 @@
 use Romm\Formz\Middleware\Signal\SendsMiddlewareSignal;
 
 use Romm\Formz\Form\FormInterface;
+use TYPO3\CMS\Extbase\Error\Error;
 
 class InvalidArgumentValueException extends FormzException
 {
@@ -25,6 +26,8 @@ class InvalidArgumentValueException extends FormzException
 
     const FORM_NAME_EMPTY = 'The name of the form (type: "%s") can not be empty.';
 
+    const AJAX_DATA_MAPPER_ERROR = 'Arguments mapping validation error %s';
+
     /**
      * @code 1485786285
      *
@@ -74,4 +77,27 @@ final public static function formNameEmpty(FormInterface $form)
 
         return $exception;
     }
+
+    /**
+     * @code 1539693830
+     *
+     * @param Error[] $errorsList
+     * @return self
+     */
+    final public static function ajaxDataMapperError(array $errorsList)
+    {
+        $message = '';
+
+        foreach ($errorsList as $key => $errors) {
+            $message .= ' / ' . $key . ': ' . implode('; ', $errors);
+        }
+
+        /** @var self $exception */
+        $exception = self::getNewExceptionInstance(
+            self::AJAX_DATA_MAPPER_ERROR,
+            [$message]
+        );
+
+        return $exception;
+    }
 }