function MediaSourceBase::getSourceFieldStorage

Returns the source field storage definition.

Return value

\Drupal\Core\Field\FieldStorageDefinitionInterface|null The field storage definition or NULL if it doesn't exists.

File

core/modules/media/src/MediaSourceBase.php, line 254

Class

MediaSourceBase

Base implementation of media source plugin.

Namespace

Code

protected function getSourceFieldStorage() {
    // Nothing to do if no source field is configured yet.
    $field = $this->configuration['source_field'];
    if ($field) {
        // Even if we do know the name of the source field, there's no
        // guarantee that it exists.
        $fields = $this->entityFieldManager
            ->getFieldStorageDefinitions('media');
        return $fields[$field] ?? NULL;
    }
    return NULL;
}