function MenuUiHooks::formNodeFormAlter

Implements hook_form_BASE_FORM_ID_alter() for \Drupal\node\NodeForm.

Adds menu item fields to the node form.

See also

menu_ui_form_node_form_submit()

File

core/modules/menu_ui/src/Hook/MenuUiHooks.php, line 92

Class

MenuUiHooks

Hook implementations for menu_ui.

Namespace

Code

public function formNodeFormAlter(&$form, FormStateInterface $form_state) : void {
    // Generate a list of possible parents (not including this link or descendants).
    // @todo This must be handled in a #process handler.
    $node = $form_state->getFormObject()
        ->getEntity();
    $defaults = menu_ui_get_menu_link_defaults($node);
    
    /** @var \Drupal\node\NodeTypeInterface $node_type */
    $node_type = $node->type->entity;
    
    /** @var \Drupal\Core\Menu\MenuParentFormSelectorInterface $menu_parent_selector */
    $menu_parent_selector = \Drupal::service('menu.parent_form_selector');
    $type_menus_ids = $node_type->getThirdPartySetting('menu_ui', 'available_menus', [
        'main',
    ]);
    if (empty($type_menus_ids)) {
        return;
    }
    
    /** @var \Drupal\system\MenuInterface[] $type_menus */
    $type_menus = Menu::loadMultiple($type_menus_ids);
    $available_menus = [];
    foreach ($type_menus as $menu) {
        $available_menus[$menu->id()] = $menu->label();
    }
    if ($defaults['id']) {
        $default = $defaults['menu_name'] . ':' . $defaults['parent'];
    }
    else {
        $default = $node_type->getThirdPartySetting('menu_ui', 'parent', 'main:');
    }
    $parent_element = $menu_parent_selector->parentSelectElement($default, $defaults['id'], $available_menus);
    // If no possible parent menu items were found, there is nothing to display.
    if (empty($parent_element)) {
        return;
    }
    $form['menu'] = [
        '#type' => 'details',
        '#title' => t('Menu settings'),
        '#access' => \Drupal::currentUser()->hasPermission('administer menu'),
        '#open' => (bool) $defaults['id'],
        '#group' => 'advanced',
        '#attached' => [
            'library' => [
                'menu_ui/drupal.menu_ui',
            ],
        ],
        '#tree' => TRUE,
        '#weight' => -2,
        '#attributes' => [
            'class' => [
                'menu-link-form',
            ],
        ],
    ];
    $form['menu']['enabled'] = [
        '#type' => 'checkbox',
        '#title' => t('Provide a menu link'),
        '#default_value' => (int) (bool) $defaults['id'],
    ];
    $form['menu']['link'] = [
        '#type' => 'container',
        '#parents' => [
            'menu',
        ],
        '#states' => [
            'invisible' => [
                'input[name="menu[enabled]"]' => [
                    'checked' => FALSE,
                ],
            ],
        ],
    ];
    // Populate the element with the link data.
    foreach ([
        'id',
        'entity_id',
    ] as $key) {
        $form['menu']['link'][$key] = [
            '#type' => 'value',
            '#value' => $defaults[$key],
        ];
    }
    $form['menu']['link']['title'] = [
        '#type' => 'textfield',
        '#title' => t('Menu link title'),
        '#default_value' => $defaults['title'],
        '#maxlength' => $defaults['title_max_length'],
    ];
    $form['menu']['link']['description'] = [
        '#type' => 'textfield',
        '#title' => t('Description'),
        '#default_value' => $defaults['description'],
        '#description' => t('Shown when hovering over the menu link.'),
        '#maxlength' => $defaults['description_max_length'],
    ];
    $form['menu']['link']['menu_parent'] = $parent_element;
    $form['menu']['link']['menu_parent']['#title'] = t('Parent link');
    $form['menu']['link']['menu_parent']['#attributes']['class'][] = 'menu-parent-select';
    $form['menu']['link']['weight'] = [
        '#type' => 'number',
        '#title' => t('Weight'),
        '#default_value' => $defaults['weight'],
        '#description' => t('Menu links with lower weights are displayed before links with higher weights.'),
    ];
    foreach (array_keys($form['actions']) as $action) {
        if ($action != 'preview' && isset($form['actions'][$action]['#type']) && $form['actions'][$action]['#type'] === 'submit') {
            $form['actions'][$action]['#submit'][] = 'menu_ui_form_node_form_submit';
        }
    }
    $form['#entity_builders'][] = 'menu_ui_node_builder';
}