hasListeners() public static method

Determine if a given event has listeners.
public static hasListeners ( string $eventName ) : boolean
$eventName string
return boolean
 public function postEdit(AdminRouteRequest $request)
 {
     $parent_id = $request->get('parent_id');
     $action = $request->get('action');
     $route_name = $request->get('route_name');
     $route = $this->routes->find($request->get('id'));
     if (!$route) {
         return response('找不到相关记录', 422);
     }
     if ($parent_id != 0) {
         if (empty($action) && !\Event::hasListeners('router.filter: ' . $route_name)) {
             return response($route_name . ':路由验证不存在', 422);
         }
         if (!empty($action) && !class_exists('App\\Http\\Controllers\\' . $action)) {
             return response($action . ':控制器不存在', 422);
         }
     } else {
         $route_name = strtolower($route_name);
     }
     $route->name = $request->get('name');
     $route->action = $action;
     $route->route_name = $route_name;
     $route->other_route = $request->get('other_route', '');
     $route->parent_id = $parent_id;
     $route->priority = $request->has('priority') ? $request->get('priority') : '';
     if ($route->save()) {
         \Cache::forget($route->route_name . "_routes");
         return saveok();
     } else {
         return response('保存失败', 422);
     }
 }
 protected function mockController($controllerName = null)
 {
     $controllerName = $controllerName ?: $this->controllerName;
     $this->router = $this->app['router'];
     $events = $this->getProperty($this->router, 'events');
     $this->setProperty($this->router, 'events', $events);
     $this->app['router'] = $this->router;
     $this->mock($controllerName);
     $controllerInstance = $this->app->make($controllerName);
     $controllerInstance->shouldReceive('paramsBeforeFilter')->with(m::type('string'))->once();
     $controllerInstance->shouldReceive('getBeforeFilters')->once()->andReturn([['original' => null, 'filter' => null, 'parameters' => [], 'options' => []]]);
     $controllerInstance->shouldReceive('getAfterFilters')->once()->andReturn([['original' => null, 'filter' => null, 'parameters' => [], 'options' => []]]);
     $controllerInstance->shouldReceive('getMiddleware')->once()->andReturn([]);
     $controllerInstance->shouldReceive('callAction')->with(m::type('string'), m::type('array'))->andReturnUsing(function ($method, $parameters) use($controllerInstance) {
         $this->app->make('Params')->fillController($controllerInstance);
         $filterName = "router.filter: controller.parameters." . get_classname($controllerInstance);
         $this->assertTrue(Event::hasListeners($filterName));
         Event::fire($filterName);
         return new \Symfony\Component\HttpFoundation\Response();
     });
     $this->mock('\\Efficiently\\AuthorityController\\ControllerResource');
     $this->controllerResource = $this->app->make('\\Efficiently\\AuthorityController\\ControllerResource');
     $this->controllerResource->shouldReceive('getNameByController')->with('ProjectsController')->andReturn('project');
     return $controllerInstance;
 }
 public function testLoadResourceShouldSetupABeforeFilterWhichPassesCallToControllerResource()
 {
     $controller = $this->controller;
     $controllerResourceClass = 'Efficiently\\AuthorityController\\ControllerResource';
     App::offsetUnset($controllerResourceClass);
     App::bind($controllerResourceClass, function ($app, $parameters) use($controllerResourceClass, $controller) {
         $this->assertEquals($parameters, [$controller, null, ['foo' => 'bar']]);
         $controllerResource = m::mock($controllerResourceClass, $parameters);
         $controllerResource->shouldReceive('loadResource')->once();
         return $controllerResource;
     });
     $controller->shouldReceive('beforeFilter')->with(m::type('string'), ['only' => ['show', 'index']])->once()->andReturnUsing(function ($filterName, $options) use($controller) {
         $this->assertTrue(Event::hasListeners($this->filterPrefix . $filterName));
         return Event::fire($this->filterPrefix . $filterName);
     });
     $controller->loadResource(['foo' => 'bar', 'only' => ['show', 'index']]);
 }