function PreExportEvent::setCallback

Sets the export callback for a specific field name or data type.

Parameters

string $name_or_data_type: A field name or field item data type, like `field_item:image`. If the callback should run for every field a given type, this should be prefixed with `field_item:`, which is the Typed Data prefix for field items. If there is no prefix, this is treated as a field name.

callable $callback: The callback which should export items of the specified field type. See the class documentation for details.

File

core/lib/Drupal/Core/DefaultContent/PreExportEvent.php, line 101

Class

PreExportEvent

Event dispatched before an entity is exported as default content.

Namespace

Code

public function setCallback(string $name_or_data_type, callable $callback) : void {
  $this->callbacks[$name_or_data_type] = $callback;
}