symfony - Generating routes in javascript with Twig and Symfony2

Question

Quite odd problem, sorry for asking, i'm quite new to Symfony/Twig. My route requires a mandatory region_id paramenter:

ajax_provinces_by_region:
  pattern: /ajax/region/{region_id}/provinces
  defaults: {_controller: SWAItaliaInCifreBundle:Ajax:provincesByRegion }
  requirements: {region_in: d+}

The question is: how can i generate this route based on a select element in javascript (code below)?

The problem is: i can't use path and url helpers from Symfony as they require to specify the region_id parameter (this.value) i can't access because it's a javascript variable (and Twig is compiled server-side).

$(document).ready(function() {
    $('select#regions').change(function(){

        // Make an ajax call to get all region provinces
        $.ajax({
            url: // Generate the route using Twig helper
        });

    });
});

question from:https://stackoverflow.com/questions/7626792/generating-routes-in-javascript-with-twig-and-symfony2

Answer 1

You can use the FOSJsRoutingBundle.