protected function QuickEditImageController::getField in Drupal 8

Same name and namespace in other branches

9 core/modules/image/src/Controller/QuickEditImageController.php \Drupal\image\Controller\QuickEditImageController::getField()

Returns JSON representing the current state of the field.

Parameters

\Drupal\Core\Entity\EntityInterface $entity: The entity of which an image field is being rendered.

string $field_name: The name of the (image) field that is being rendered

string $langcode: The language code of the field that is being rendered.

Return value

\Drupal\image\Plugin\Field\FieldType\ImageItem The field for this request.

Throws

\Symfony\Component\HttpKernel\Exception\BadRequestHttpException Throws an exception if the request is invalid.

2 calls to QuickEditImageController::getField()

QuickEditImageController::getInfo in core/modules/image/src/Controller/QuickEditImageController.php: Returns JSON representing an image field's metadata.
QuickEditImageController::upload in core/modules/image/src/Controller/QuickEditImageController.php: Returns JSON representing the new file upload, or validation errors.

File

core/modules/image/src/Controller/QuickEditImageController.php, line 227

Class

QuickEditImageController: Returns responses for our image routes.

Namespace

Drupal\image\Controller

Code

protected function getField(EntityInterface $entity, $field_name, $langcode) {

  // Ensure that this is a valid Entity.
  if (!$entity instanceof ContentEntityInterface) {
    throw new BadRequestHttpException('Requested Entity is not a Content Entity.');
  }

  // Check that this field exists.

  /** @var \Drupal\Core\Field\FieldItemListInterface $field_list */
  $field_list = $entity
    ->getTranslation($langcode)
    ->get($field_name);
  if (!$field_list) {
    throw new BadRequestHttpException('Requested Field does not exist.');
  }

  // If the list is empty, append an empty item to use.
  if ($field_list
    ->isEmpty()) {
    $field = $field_list
      ->appendItem();
  }
  else {
    $field = $entity
      ->getTranslation($langcode)
      ->get($field_name)
      ->first();
  }

  // Ensure that the field is the type we expect.
  if (!$field instanceof ImageItem) {
    throw new BadRequestHttpException('Requested Field is not of type "image".');
  }
  return $field;
}

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