public function LocalTaskManager::getLocalTasks in Drupal 8

Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/Menu/LocalTaskManager.php \Drupal\Core\Menu\LocalTaskManager::getLocalTasks()

Renders the local tasks (tabs) for the given route.

Parameters

string $route_name: The route for which to make renderable local tasks.

int $level: The level of tasks you ask for. Primary tasks are 0, secondary are 1.

Return value

array An array containing

• tabs: Local tasks render array for the requested level.
• route_name: The route name for the current page used to collect the local tasks.

Overrides LocalTaskManagerInterface::getLocalTasks

See also

hook_menu_local_tasks_alter()

File

core/lib/Drupal/Core/Menu/LocalTaskManager.php, line 365

Class

LocalTaskManager

Provides the default local task manager using YML as primary definition.

Namespace

Drupal\Core\Menu

Code

public function getLocalTasks($route_name, $level = 0) {
  if (!isset($this->taskData[$route_name])) {
    $cacheability = new CacheableMetadata();
    $cacheability
      ->addCacheContexts([
      'route',
    ]);

    // Look for route-based tabs.
    $this->taskData[$route_name] = [
      'tabs' => [],
      'cacheability' => $cacheability,
    ];
    if (!$this->requestStack
      ->getCurrentRequest()->attributes
      ->has('exception')) {

      // Safe to build tasks only when no exceptions raised.
      $data = [];
      $local_tasks = $this
        ->getTasksBuild($route_name, $cacheability);
      foreach ($local_tasks as $tab_level => $items) {
        $data[$tab_level] = empty($data[$tab_level]) ? $items : array_merge($data[$tab_level], $items);
      }
      $this->taskData[$route_name]['tabs'] = $data;

      // Allow modules to alter local tasks.
      $this->moduleHandler
        ->alter('menu_local_tasks', $this->taskData[$route_name], $route_name, $cacheability);
      $this->taskData[$route_name]['cacheability'] = $cacheability;
    }
  }
  if (isset($this->taskData[$route_name]['tabs'][$level])) {
    return [
      'tabs' => $this->taskData[$route_name]['tabs'][$level],
      'route_name' => $route_name,
      'cacheability' => $this->taskData[$route_name]['cacheability'],
    ];
  }
  return [
    'tabs' => [],
    'route_name' => $route_name,
    'cacheability' => $this->taskData[$route_name]['cacheability'],
  ];
}