Symfony2 - Modifying Exception Controller

Question

I am trying to create custom exception pages in Symfony 2, and am following the Symfony 2 guide here and here. The second link says to modify the controller found Symfony\\Bundle\\TwigBundle\\Controller\\ExceptionController::showAction, but I can only find that file in the vendor\symfony\symfony\src\Symfony\Bundle\TwigBundle\Controller folder. From my understanding, I should never modify anything in the vendors folder.

I am wondering where is the ExceptionController I should be modifying located?

You don't want to modify any vendor files. You want to create a new ExceptionController. I answered a similar question on how to modify ExceptionControllers here: stackoverflow.com/questions/14282690/… — Mike
– Mike, Commented Jan 14, 2013 at 17:29
@Mike So do I ignore the ExceptionController inside the Vendor directory? — Jon
– Jon, Commented Jan 14, 2013 at 17:32
Can you give me more details on what you want to accomplish? Do you simply need to modify the HTML/twig templates? Is there custom PHP code you need to execute before displaying the exception templates? — Mike
– Mike, Commented Jan 14, 2013 at 17:33
@Mike I need to modify a twig/html template to display a 404 and 500 error page. There should not be any custom PHP code that needs to be executed prior to displaying the exception page. — Jon
– Jon, Commented Jan 14, 2013 at 17:38
For the config.yml, I am wondering if you are talking about the services.yml inside the config folder? — Jon
– Jon, Commented Jan 14, 2013 at 17:43

Community · Accepted Answer · 2017-05-23 10:30:05Z

1

If you need to override the symfony error templates, take the templates from

vendor/symfony/src/Symfony/Bundle/TwigBundle/Resources/views/Exception

and place the ones you want to customize in a app/Resources/TwigBundle/views/Exception directory. Then customize as needed.

If you want to render templates based on the application, see my answer @ customize 403 error page depening on route in symfony 2.0

edited May 23, 2017 at 10:30

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answered Jan 14, 2013 at 17:29

Mike

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9 Comments

Jon Over a year ago

Would I be putting my error pages in app/Resources/TwigBundle/views/Exception?

Jon Over a year ago

I also don't understand the if statement in your code. Does the if mean if they enter in that route, redirect them to a backend template? Sorry, I am new to PHP and frameworks.

Mike Over a year ago

Based on what? Implementing the solution in the other post? If you're using the solution in the other post, you can put them anywhere. The app/Resources/TwigBundle/views/Exception would primarily be if you only want to customize the error templates, and not override the exception controller.

Mike Over a year ago

@Jon -- If you are new to PHP, Symfony2 is going to be a tough thing to comprehend. I suggest reading the documentation from top to bottom to get a clear understanding of what's going on. Error templates are going to be the least of your issues. :)

Jon Over a year ago

Sorry, I should have explained myself better. I would like to override the exception controller as I am using your solution from your other post. I am currently learning PHP/Symfony on my own time, but at the same time I need to help my team on the project.

|

Plínio César · Accepted Answer · 2014-08-12 23:24:55Z

1

If you only need to change the layout of the error pages, creating the files on app/Resources/TwigBundle/views/Exception should be enough.

But if you need to pass additional parameters to your error pages you should override the default ExceptionController. To do that, you should create a new controller that extends the default one:

use Symfony\Bundle\TwigBundle\Controller\ExceptionController;
class MyExceptionController extends ExceptionController {
    //override the showAction() or findTemplate() method here
}

Then you need to tell symfony to use your new controller. This can be done by adding a new parameter on your parameters.yml file:

parameters:
    twig.controller.exception.class: YourBundle\Controller\MyExceptionController

answered Aug 12, 2014 at 23:24

Plínio César

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1 Comment

abhilashv Over a year ago

Tried this but getting an exception: PHP Fatal error: Uncaught exception 'Guzzle\Http\Exception\ClientErrorResponseException' with message 'Client error response [status code] 404 [reason phrase] Not Found

Münze · Accepted Answer · 2014-08-18 07:17:53Z

0

For me it wasn't

parameters:
twig.controller.exception.class: YourBundle\Controller\MyExceptionController

but

parameters:
twig.controller.exception.class: YourNamespace\YourBundle\Controller\MyExceptionController

answered Aug 18, 2014 at 7:17

Münze

1

Comments

Nek · Accepted Answer · 2018-11-29 17:20:14Z

0

With Symfony 4 you need this:

class TwigExceptionControllerCompilerPass implements CompilerPassInterface
{
    public function process(ContainerBuilder $container)
    {
        $definition = $container->getDefinition('twig.controller.exception');
        $definition->setClass(TwigExceptionController::class);
    }
}

answered Nov 29, 2018 at 17:20

Nek

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