function MediaLibraryWidget::validateRequired

Validates whether the widget is required and contains values.

Parameters

array $element: The form element.

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

array $form: The form array.

File

core/modules/media_library/src/Plugin/Field/FieldWidget/MediaLibraryWidget.php, line 999

Class

MediaLibraryWidget

Plugin implementation of the 'media_library_widget' widget.

Namespace

Code

public static function validateRequired(array $element, FormStateInterface $form_state, array $form) {
    // If a remove button triggered submit, this validation isn't needed.
    if (in_array([
        static::class,
        'removeItem',
    ], $form_state->getSubmitHandlers(), TRUE)) {
        return;
    }
    // If user has no access, the validation isn't needed.
    if (isset($element['#access']) && !$element['#access']) {
        return;
    }
    $field_state = static::getFieldState($element, $form_state);
    // Trigger error if the field is required and no media is present. Although
    // the Form API's default validation would also catch this, the validation
    // error message is too vague, so a more precise one is provided here.
    if (count($field_state['items']) === 0) {
        $form_state->setError($element, new TranslatableMarkup('@name field is required.', [
            '@name' => $element['#title'],
        ]));
    }
}