public static function ImageWidget::validateRequiredFields in Zircon Profile 8

Same name and namespace in other branches

1. 8.0 core/modules/image/src/Plugin/Field/FieldWidget/ImageWidget.php \Drupal\image\Plugin\Field\FieldWidget\ImageWidget::validateRequiredFields()

Validate callback for alt and title field, if the user wants them required.

This is separated in a validate function instead of a #required flag to avoid being validated on the process callback.

File

core/modules/image/src/Plugin/Field/FieldWidget/ImageWidget.php, line 257

Contains \Drupal\image\Plugin\Field\FieldWidget\ImageWidget.

Class

ImageWidget

Plugin implementation of the 'image_image' widget.

Namespace

Drupal\image\Plugin\Field\FieldWidget

Code

public static function validateRequiredFields($element, FormStateInterface $form_state) {

  // Only do validation if the function is triggered from other places than
  // the image process form.
  if (!in_array('file_managed_file_submit', $form_state
    ->getTriggeringElement()['#submit'])) {

    // If the image is not there, we do not check for empty values.
    $parents = $element['#parents'];
    $field = array_pop($parents);
    $image_field = NestedArray::getValue($form_state
      ->getUserInput(), $parents);

    // We check for the array key, so that it can be NULL (like if the user
    // submits the form without using the "upload" button).
    if (!array_key_exists($field, $image_field)) {
      return;
    }
  }
  else {
    $form_state
      ->setLimitValidationErrors([]);
  }
}