function EntityReferenceAjaxController::viewField

Same name and namespace in other branches

1. 8.x-1.x src/Controller/EntityReferenceAjaxController.php \Drupal\entity_reference_ajax_formatter\Controller\EntityReferenceAjaxController::viewField() 1 comment

Render the desired field into an AjaxResponse.

Parameters

\Drupal\Core\Entity\EntityInterface $entity: The entity to get the field from.

string $field_name: The field to display.

string $view_mode: The view mode to display the field with.

string $language: The language to get the field in.

int $start: Currently only used in the EntityReferenceAjaxFormatter.

?string $printed: Used when sorting and order isn't guaranteed to ensure no duplicates.

Return value

\Drupal\Core\Ajax\AjaxResponse The ajax response.

Throws

\Symfony\Component\HttpKernel\Exception\BadRequestHttpException If the field doesn't exist or not a Content Entity.

1 string reference to 'EntityReferenceAjaxController::viewField'

entity_reference_ajax_formatter.routing.yml in ./entity_reference_ajax_formatter.routing.yml

entity_reference_ajax_formatter.routing.yml

File

src/Controller/EntityReferenceAjaxController.php, line 60

Class

EntityReferenceAjaxController

Returns responses for our ajaxified entity reference route.

Namespace

Drupal\entity_reference_ajax_formatter\Controller

Code

public function viewField(EntityInterface $entity, string $field_name, string $view_mode, string $language, int $start, ?string $printed) {
    // Ensure that this is a valid Content Entity.
    if (!$entity instanceof ContentEntityInterface) {
        throw new BadRequestHttpException('Requested Entity is not a Content Entity.');
    }
    // Check that this field exists.
    
    /** @var \Drupal\Core\Field\FieldItemListInterface $field */
    if (!($field = $entity->getTranslation($language)
        ->get($field_name))) {
        throw new BadRequestHttpException('Requested Field does not exist.');
    }
    $response = new AjaxResponse();
    $field_elements = $field->view($view_mode);
    $response->addCommand(new ReplaceCommand("#ajax-field-{$entity->getEntityTypeId()}-{$entity->id()}-{$field_name}", $this->renderer
        ->render($field_elements)));
    return $response;
}