constant MigrateEvents::PRE_ROLLBACK in Drupal 9

Same name and namespace in other branches

1. 8 core/modules/migrate/src/Event/MigrateEvents.php \Drupal\migrate\Event\MigrateEvents::PRE_ROLLBACK
2. 10 core/modules/migrate/src/Event/MigrateEvents.php \Drupal\migrate\Event\MigrateEvents::PRE_ROLLBACK

Name of the event fired when beginning a migration rollback operation.

This event allows modules to perform an action whenever a migration rollback operation is about to begin. The event listener method receives a \Drupal\migrate\Event\MigrateRollbackEvent instance.

See also

\Drupal\migrate\Event\MigrateRollbackEvent

Related topics

File

core/modules/migrate/src/Event/MigrateEvents.php, line 122

Class

MigrateEvents

Defines events for the migration system.

Namespace

Drupal\migrate\Event

Code

const PRE_ROLLBACK = 'migrate.pre_rollback';