hook_ENTITY_TYPE_prepare_form(\Drupal\Core\Entity\EntityInterface $entity, $operation, \Drupal\Core\Form\FormStateInterface $form_state)
Acts on a particular type of entity object about to be in an entity form.
This can be typically used to pre-fill entity values or change the form state before the entity form is built. It is invoked just once when first building the entity form. Rebuilds will not trigger a new invocation.
Parameters
\Drupal\Core\Entity\EntityInterface $entity: The entity that is about to be shown on the form.
$operation: The current operation.
\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form.
See also
\Drupal\Core\Entity\EntityForm::prepareEntity()
Related topics
- Entity CRUD, editing, and view hooks
- Hooks used in various entity operations.
- Hooks
- Define functions that alter the behavior of Drupal core.
File
- core/lib/Drupal/Core/Entity/entity.api.php, line 1616
- Hooks and documentation related to entities.
Code
1 2 3 4 5 6 | function hook_ENTITY_TYPE_prepare_form(\Drupal\Core\Entity\EntityInterface $entity, $operation, \Drupal\Core\Form\FormStateInterface $form_state) { if ($operation == 'edit') { $entity->label->value = 'Altered label'; $form_state->set('label_altered', TRUE); }} |
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