function ContentEntityForm::addRevisionableFormFields

Add revision form fields if the entity enabled the UI.

Parameters

array $form: An associative array containing the structure of the form.

File

core/lib/Drupal/Core/Entity/ContentEntityForm.php, line 410

Class

ContentEntityForm

Entity form variant for content entity types.

Namespace

Code

protected function addRevisionableFormFields(array &$form) {
    
    /** @var ContentEntityTypeInterface $entity_type */
    $entity_type = $this->entity
        ->getEntityType();
    $new_revision_default = $this->getNewRevisionDefault();
    // Add a log field if the "Create new revision" option is checked, or if the
    // current user has the ability to check that option.
    $form['revision_information'] = [
        '#type' => 'details',
        '#title' => $this->t('Revision information'),
        // Open by default when "Create new revision" is checked.
'#open' => $new_revision_default,
        '#group' => 'advanced',
        '#weight' => 20,
        '#access' => $new_revision_default || $this->entity
            ->get($entity_type->getKey('revision'))
            ->access('update'),
        '#optional' => TRUE,
        '#attributes' => [
            'class' => [
                'entity-content-form-revision-information',
            ],
        ],
        '#attached' => [
            'library' => [
                'core/drupal.entity-form',
            ],
        ],
    ];
    $form['revision'] = [
        '#type' => 'checkbox',
        '#title' => $this->t('Create new revision'),
        '#default_value' => $new_revision_default,
        '#access' => !$this->entity
            ->isNew() && $this->entity
            ->get($entity_type->getKey('revision'))
            ->access('update'),
        '#group' => 'revision_information',
    ];
    // Get log message field's key from definition.
    $log_message_field = $entity_type->getRevisionMetadataKey('revision_log_message');
    if ($log_message_field && isset($form[$log_message_field])) {
        $form[$log_message_field] += [
            '#group' => 'revision_information',
            '#states' => [
                'visible' => [
                    ':input[name="revision"]' => [
                        'checked' => TRUE,
                    ],
                ],
            ],
        ];
    }
}