Get controller name in TWIG template

Question

I am learning symfony2.3 and I get an error message when I try to get the controller name in the branch template.

Controller:

namespace Acme\AdminBundle\Controller; use Symfony\Bundle\FrameworkBundle\Controller\Controller; use Symfony\Component\HttpFoundation\Request; class DefaultController extends Controller { public function indexAction($name) { return $this->render('AcmeAdminBundle:Default:index.html.twig', array('name' => $name)); } } 

In my TWIG template:

 {% extends '::base.html.twig' %} {% block body %} {{ app.request.get('_template').get('controller') }} Hello {{ name }}!!! {% endblock %} 

Output:

 Impossible to invoke a method ("get") on a NULL variable ("") in AcmeAdminBundle:Default:index.html.twig at line 3 

I want the output to be like "Default"

I use symfony 2.3, I also tried using symfony 2.1, but the same error occurs on both versions.

Answer 1

use this line to display the controller name in the branch:

 {{ app.request.attributes.get("_controller") }} 

Answer 2

Many months ago I had the same problem as you, and "googling" I found working code, and I adapted it to my needs. Here we go:

1 - We need to define a TWIG extension. We created the folder structure Your \ OwnBundle \ Twig \ Extension, if you have not decided yet.

2 - Inside this folder, we create the ControllerActionExtension.php file, whose code is:

 namespace Your\OwnBundle\Twig\Extension; use Symfony\Component\HttpFoundation\Request; /** * A TWIG Extension which allows to show Controller and Action name in a TWIG view. * * The Controller/Action name will be shown in lowercase. For example: 'default' or 'index' * */ class ControllerActionExtension extends \Twig_Extension { /** * @var Request */ protected $request; /** * @var \Twig_Environment */ protected $environment; public function setRequest(Request $request = null) { $this->request = $request; } public function initRuntime(\Twig_Environment $environment) { $this->environment = $environment; } public function getFunctions() { return array( 'get_controller_name' => new \Twig_Function_Method($this, 'getControllerName'), 'get_action_name' => new \Twig_Function_Method($this, 'getActionName'), ); } /** * Get current controller name */ public function getControllerName() { if(null !== $this->request) { $pattern = "#Controller\\\([a-zA-Z]*)Controller#"; $matches = array(); preg_match($pattern, $this->request->get('_controller'), $matches); return strtolower($matches[1]); } } /** * Get current action name */ public function getActionName() { if(null !== $this->request) { $pattern = "#::([a-zA-Z]*)Action#"; $matches = array(); preg_match($pattern, $this->request->get('_controller'), $matches); return $matches[1]; } } public function getName() { return 'your_own_controller_action_twig_extension'; } } 

3 - After that, we need to specify the service for TWIG recognition:

 services: your.own.twig.controller_action_extension: class: Your\OwnBundle\Twig\Extension\ControllerActionExtension calls: - [setRequest, ["@?request="]] tags: - { name: twig.extension } 

4 - Clear the cache to make sure everything is in order:

 php app/console cache:clear --no-warmup 

5 - And now, if I forget nothing, you can access these two methods in the TWIG template: get_controller_name() and get_action_name()

6 - Examples:

 You are in the {{ get_action_name() }} action of the {{ get_controller_name() }} controller. 

This will output something like: you are in the default controller index action.

You can also use to check:

 {% if get_controller_name() == 'default' %} Whatever {% else %} Blablabla {% endif %} 

And it's all! Hope I helped you buddy :)

Edit: Take care of caching cleanup. If you do not use the --no-warmup option, you may realize that nothing is displayed in your templates. This is because this TWIG extension uses a query to retrieve the names Controller and Action. If you "warm up" the cache, the request does not match the browser request, and the methods may return '' or null

Answer 3

Since Symfony 3.x, the service request is replaced by request_stack, and the Twig Extension declaration is changed from Twig 1.12.

I will correct Dani's answer ( fooobar.com/questions/947832 / ... ):

1 - We need to define a TWIG extension. We created the folder structure AppBundle \ Twig \ Extension, if you have not decided yet.

2 - Inside this folder, we create the ControllerActionExtension.php file, whose code is:

 <?php namespace AppBundle\Twig\Extension; use Symfony\Component\HttpFoundation\RequestStack; class ControllerActionExtension extends \Twig_Extension { /** @var RequestStack */ protected $requestStack; public function __construct(RequestStack $requestStack) { $this->requestStack = $requestStack; } public function getFunctions() { return [ new \Twig_SimpleFunction('getControllerName', [$this, 'getControllerName']), new \Twig_SimpleFunction('getActionName', [$this, 'getActionName']) ]; } /** * Get current controller name * * @return string */ public function getControllerName() { $request = $this->requestStack->getCurrentRequest(); if (null !== $request) { $pattern = "#Controller\\\([a-zA-Z]*)Controller#"; $matches = []; preg_match($pattern, $request->get('_controller'), $matches); return strtolower($matches[1]); } } /** * Get current action name * * @return string */ public function getActionName() { $request = $this->requestStack->getCurrentRequest(); if (null !== $request) { $pattern = "#::([a-zA-Z]*)Action#"; $matches = []; preg_match($pattern, $request->get('_controller'), $matches); return $matches[1]; } } public function getName() { return 'controller_action_twig_extension'; } } 

3 - After that, we need to specify the service for TWIG recognition:

 app.twig.controller_action_extension: class: AppBundle\Twig\Extension\ControllerActionExtension arguments: [ '@request_stack' ] tags: - { name: twig.extension } 

4 - Clear the cache to make sure everything is in order:

 php bin/console cache:clear --no-warmup 

5 - And now, if I forget nothing, you can access these two methods in the TWIG template: getControllerName () and getActionName ()

6 - Examples:

You are in the action {{getActionName ()}} of the controller {{getControllerName ()}}.

This will output something like: you are in the default controller index action.

You can also use to check:

 {% if getControllerName() == 'default' %} Whatever {% else %} Blablabla {% endif %} 

Answer 4

I really don't see WHY you need it.
You could better send parameters to your opinion.

But if you really need it, here is the solution:

Your error comes from the second get method

 request = app.request // Request object NULL = request.get('_template') // Undefined attribute, default NULL NULL.get('controller') // Triggers error 

If you want to receive a controller call during a request, you can access it through the request attribute _controller key

 app.request.attribute.get('_controller') 

Will return

 Acme\AdminBundle\Controller\DefaultController::indexAction 

Then you can disassemble it the way you want.

Note that this does not return a controller instance, only its name and method are called

Answer 5

To get the controller - {{app.request.attributes.get ('_ controller')}} To get the action - {{app.request.attributes.get ('_ template'). Get ('name')}}

Found at - http://forum.symfony-project.org/viewtopic.php?f=23&t=34083

Answer 6

It can change. If you use annotations in the controller, for example. @Template("AcmeDemoBundle:Default:index") , trying to access app.request.get('_template') in your Twig template will return a string, for example. "AcmeDemoBundle: Default: index." Therefore, you may need to access it as follows:

 {% set _template = app.request.get('_template')|split(':') %} {% set controller = _template[1] %} {% set bundle = _template[0] %} 

If you are not using annotations, you can use app.request.get('_template').get('_controller')

Answer 7

Controller:

 {{ app.request.attributes.get('_template').get('controller') }} 

Act:

 {{ app.request.attributes.get('_template').get('name') }} 

enjoy;)