How to override form_errors() from twig in symfony?

by herminia_bruen , in category: PHP Frameworks , 4 months ago

How to override form_errors() from twig in symfony?

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1 answer

by giovanny.lueilwitz , 4 months ago

@herminia_bruen 

To override the form_errors() function in Twig in Symfony, you can create a new Twig extension and add your custom implementation of the form_errors() function.


Here is an example of how you can create a custom Twig extension in Symfony:

  1. Create a new Twig extension class by extending the AbstractExtension class and implementing the getFunctions() method. This method should return an array of Twig functions, including your custom form_errors() function.
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// src/Twig/CustomFormErrorsExtension.php

namespace AppTwig;

use SymfonyComponentFormFormView;
use SymfonyComponentFormExtensionCoreTypeFormType;
use TwigExtensionAbstractExtension;
use TwigTwigFunction;

class CustomFormErrorsExtension extends AbstractExtension
{
    public function getFunctions()
    {
        return [
            new TwigFunction('form_errors', [$this, 'customFormErrors'], ['is_safe' => ['html'], 'needs_context' => true]),
        ];
    }

    public function customFormErrors(array $context, FormView $form, array $options = [])
    {
        // Add your custom implementation of form_errors() here
        // You can access the form errors using $form->vars['errors'] and modify the output accordingly

        // Return the modified errors HTML
    }
}


  1. Register your custom Twig extension as a service in services.yaml:
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# config/services.yaml

services:
    AppTwigCustomFormErrorsExtension:
        tags: ['twig.extension']


  1. Now you can use your custom form_errors() function in your Twig templates:
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{{ form_errors(form) }}


Remember to modify the customFormErrors() method in your CustomFormErrorsExtension class to suit your specific requirements and modify the output of the form errors as needed.