symfony - Default to blank string in Twig template if translation is not found -


is there way default blank string rather translation key in event translation has not been found in twig template?

i attempting sort of thing using default twig filter alongside trans filter not work:

{{ 'crmpicco.general.course.opening_hours_weekend'|default('')|trans }}

you can overwrite translation extension own, trans , transchoice filter behave want:

<?php // src/appbundle/twig/emptytranslationextension.php  namespace appbundle\twig;  use symfony\bridge\twig\extension\translationextension;  class emptytranslationextension extends translationextension {     public function trans($message, array $arguments = [], $domain = null, $locale = null)     {         $value = parent::trans($message, $arguments, $domain, $locale);          return ($message === $value) ? '' : $value;     }      public function transchoice($message, $count, array $arguments = [], $domain = null, $locale = null)     {         $value = parent::transchoice($message, $count, array_merge(['%count%' => $count], $arguments), $domain, $locale);          return ($message === $value) ? '' : $value;     } }

and register extension replacement default one:

# app/config/services.yml  services:     twig.extension.trans:         class: appbundle\twig\emptytranslationextension         public: false         arguments:             - @translator         tags:             - { name: twig.extension }

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