function hook_field_attach_purge

Act on field_purge_data().

This hook is invoked in field_purge_data() and allows modules to act on purging data from a single field pseudo-entity. For example, if a module relates data in the field with its own data, it may purge its own data during this process as well.

Parameters

\Drupal\Core\Entity\EntityInterface $entity: The pseudo-entity whose field data is being purged.

$field: The (possibly deleted) field whose data is being purged.

$instance: The deleted field instance whose data is being purged.

See also

Field API bulk data deletion

field_purge_data()

Related topics

Field Attach API
Operates on Field API data attached to Drupal entities.
Hooks
Allow modules to interact with the Drupal core.
1 invocation of hook_field_attach_purge()
field_purge_data in drupal/core/modules/field/field.crud.inc
Purges the field data for a single field on a single pseudo-entity.

File

drupal/core/modules/field/field.api.php, line 1030

Code

function hook_field_attach_purge(\Drupal\Core\Entity\EntityInterface $entity, $field, $instance) {

  // find the corresponding data in mymodule and purge it
  if ($entity
    ->entityType() == 'node' && $field->field_name == 'my_field_name') {
    mymodule_remove_mydata($entity->nid);
  }
}