function ImageItem::validateDefaultImageForm

Validates the managed_file element for the default Image form.

This function ensures the fid is a scalar value and not an array. It is assigned as an #element_validate callback in \Drupal\image\Plugin\Field\FieldType\ImageItem::defaultImageForm().

Parameters

array $element: The form element to process.

\Drupal\Core\Form\FormStateInterface $form_state: The form state.

File

core/modules/image/src/Plugin/Field/FieldType/ImageItem.php, line 504

Class

ImageItem

Plugin implementation of the 'image' field type.

Namespace

Code

public static function validateDefaultImageForm(array &$element, FormStateInterface $form_state) {
    // Consolidate the array value of this field to a single FID as #extended
    // for default image is not TRUE and this is a single value.
    if (isset($element['fids']['#value'][0])) {
        $value = $element['fids']['#value'][0];
        // Convert the file ID to a uuid.
        if ($file = \Drupal::entityTypeManager()->getStorage('file')
            ->load($value)) {
            $value = $file->uuid();
        }
    }
    else {
        $value = '';
    }
    $form_state->setValueForElement($element, $value);
}