variable jquery inside twig template

Question

I\'m trying to use a jquery varaible inside a twig template to send by ajax, but I can\'t access to the jquery variable inside the twig:

My code is:

Answer 1

Of course it does not exist.

The value variable is just plain text for Twig. Remember:

First the Twig parts are rendered, then it gets outputted to the browser, then the Browser renders the content and executes the Javascript.

The line {{ path('ParteAccidentes_ajax', {'emergencia': value}) }} is executed way before value is event parsed as javascript.

Also you're doing this in an event handler.

How should twig (since it's just a PHP library) change the path url on a executed javascript event?

Since you just want to update an URL based on symfony paths and a javascript variable, please have a look at this bundle: https://github.com/FriendsOfSymfony/FOSJsRoutingBundle

It provides the exact functionality you want.