book_form_node_confirm_form_alter(&$form, FormStateInterface $form_state)
Implements hook_form_BASE_FORM_ID_alter() for \Drupal\node\Form\NodeDeleteForm.
Alters the confirm form for a single node deletion.
File
- core/modules/book/book.module, line 330
- Allows users to create and organize related content in an outline.
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | function book_form_node_confirm_form_alter(&$form, FormStateInterface $form_state) { // Only need to alter the delete operation form. if ($form_state->getFormObject()->getOperation() !== 'delete') { return; } /** @var \Drupal\node\NodeInterface $node */ $node = $form_state->getFormObject()->getEntity(); if (!book_type_is_allowed($node->getType())) { // Not a book node. return; } if (isset($node->book) && $node->book['has_children']) { $form['book_warning'] = array( '#markup' => '<p>' . t('%title is part of a book outline, and has associated child pages. If you proceed with deletion, the child pages will be relocated automatically.', array('%title' => $node->label())) . '</p>', '#weight' => -10, ); }} |
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