How to use YUI compressor in Symfony2 routing/controller

Question

How can I use the YUI compressor with following scenario:

routing.yml

js_route:
   pattern:  /foo/bar.{_format}
   defaults: { _controller: FooBundle:Default:JS }
   requirements:
       _format: js

DefaultController.php

public function JSAction() {
   // ...
   // content for JS file is being generated
   // ...
   return $this->render('FooBundle:Default:bar.js.twig', $returnarray);
   // ...
}

I know how to use it in my twig templates (e.g. {% javascripts '@FooBundle/Resources/public/js/*' filter='?yui_js' %}) but unfortunately not for above.

Any hints? Thanks!

lifo · Accepted Answer · 2012-12-06 14:40:23Z

I don't actually suggest you do this because the YUI JS compressor will be loaded on every request to the resource. But this is one way to do it anyway.

Note, in order to keep the example simple I've excluded any extra code to properly determine your web root and location of the jar file.

$path = $this->container->getParameter('kernel.root_dir');
$ac = new \Assetic\Asset\AssetCollection(array(
    new \Assetic\Asset\FileAsset($path . '/../src/WebBundle/Resources/public/js/jquery.longclick.js')
), array(
    new \Assetic\Filter\Yui\JsCompressorFilter($path . '/Resources/java/yuicompressor-2.4.7.jar')
));
$compressJS = $ac->dump();
return new Response($compressJS, 200, array('Content-Type' => 'text/javascript'));

Also note, you're not just limited to FileAsset(). There are other classes available like StringAsset(), etc, so you can build content dynamically.

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