Proper way of generating dynamic javascript in Symfony 2?

Question

I need to generate a dynamic JSON object using some twig function like asset and translate. I'd like to put it in an external settings.js file. I may use include 'settings.js.twig' and put the relevant code in it.

Is this the correct way of generating dynamic javascript in Symfony 2?

I don't understand exactly what you'd like to do : make a JSON object with javascript? Call a javascript in twig? — Gabriel Theron
– Gabriel Theron, Commented Jun 22, 2012 at 15:05
@GabrielTheron just a json object in a separate file, made up of strings that need to be translated and use some other twig functions. — gremo
– gremo, Commented Jun 22, 2012 at 15:20

MDrollette · Accepted Answer · 2012-06-22 21:19:52Z

2

This doesn't exactly answer your question, but it's a similar theme. When I need to pass data from the controller/view to the javascript I usually set data attributes on the relevant HTML tags. For example, if I need a route for an AJAX request I will write

<a href="#updateTarget" class="ajaxTrigger" data-ajax-route="{{ path('my_ajax_route') }}">click here for ajax</a>

and then access it with

$('.ajaxTrigger').on('click', function(){
  $.getJSON($(this).data('ajax-route'), function(response) {
    // do something with response
  });
 });

answered Jun 22, 2012 at 21:19

MDrollette

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Comments

Gabriel Theron · Accepted Answer · 2012-06-22 15:16:19Z

0

If you're trying to call a twig in a javascript, you can make a controller that renders the twig that makes your json and call it from a javascript request (ajax or something like that).

Then you have your json in javascript and you can do whatever you need with it.

I think that doesn't completely answer your question though. I'd say you should avoid creating js with twig as much as possible.

answered Jun 22, 2012 at 15:16

Gabriel Theron

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1 Comment

gremo Over a year ago

That is a solution but it adds another request for the file, while file itself could be rendered without any need of ajax. But thanks anyway.

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