[TASK] Add data attributes formatting in the asset handler

Classes/AssetHandler/Html/DataAttributesAssetHandler.php

@@ -13,11 +13,15 @@
 
 namespace Romm\Formz\AssetHandler\Html;
 
+use DateTime;
 use Romm\Formz\AssetHandler\AbstractAssetHandler;
 use Romm\Formz\Error\FormResult;
 use Romm\Formz\Error\FormzMessageInterface;
+use Romm\Formz\Exceptions\InvalidArgumentTypeException;
 use Romm\Formz\Service\MessageService;
 use Romm\Formz\Service\StringService;
+use Throwable;
+use Traversable;
 use TYPO3\CMS\Extbase\Error\Result;
 use TYPO3\CMS\Extbase\Reflection\ObjectAccess;
 
@@ -56,9 +60,12 @@ public function getFieldsValuesDataAttributes(FormResult $formResult)
 
             if (false === $formResult->fieldIsDeactivated($field)) {
                 $value = ObjectAccess::getProperty($formInstance, $fieldName);
-                $value = (is_array($value))
-                    ? implode(' ', $value)
-                    : $value;
+
+                try {
+                    $value = $this->formatValue($value);
+                } catch (Throwable $e) {
+                    throw InvalidArgumentTypeException::dataAttributeValueNotFormattable($formInstance, $fieldName, $value);
+                }
 
                 if (false === empty($value)) {
                     $result[self::getFieldDataValueKey($fieldName)] = $value;
@@ -188,6 +195,26 @@ protected function addFieldMessageDataAttribute($fieldName, array $messages, $ty
         return $result;
     }
 
+    /**
+     * Checks the type of a given data attribute and formats it if needed.
+     *
+     * @param mixed $value
+     * @return array
+     */
+    protected function formatValue($value)
+    {
+        if (is_array($value) || $value instanceof Traversable) {
+            $value = implode(',', $value);
+        } elseif ($value instanceof DateTime) {
+            $format = $GLOBALS['TYPO3_CONF_VARS']['SYS']['ddmmyy'] . ' ' . $GLOBALS['TYPO3_CONF_VARS']['SYS']['hhmm'];
+            $value = $value->format($format);
+        } elseif (false === is_string($value)) {
+            $value = (string)$value;
+        }
+
+        return $value;
+    }
+
     /**
      * Formats the data value attribute key for a given field name.
      *

Classes/Exceptions/InvalidArgumentTypeException.php

@@ -38,6 +38,8 @@ class InvalidArgumentTypeException extends FormzException
 
     const CONDITION_CLASS_NAME_NOT_VALID = 'The condition class must implement "%s" (given class is "%s").';
 
+    const DATA_ATTRIBUTE_NOT_FORMATTABLE = 'The field "%s" in the form "%s" cannot be formatted. It needs to either implement `__toString()` or you need to use the `@formz-ignore` annotation in the property docblock.';
+
     /**
      * @code 1477468571
      *
@@ -192,4 +194,27 @@ final public static function ajaxControllerWrongFormType($className)
 
         return $exception;
     }
+
+    /**
+     * @code 1509724328
+     *
+     * @param FormInterface $form
+     * @param $fieldName
+     * @param $value
+     * @return InvalidArgumentTypeException
+     */
+    final public static function dataAttributeValueNotFormattable(FormInterface $form, $fieldName, $value)
+    {
+        /** @var self $exception */
+        $exception = self::getNewExceptionInstance(
+            self::DATA_ATTRIBUTE_NOT_FORMATTABLE,
+            [
+                $fieldName,
+                get_class($form),
+                $value,
+            ]
+        );
+
+        return $exception;
+    }
 }