Symfony 1.4 versioned stylesheets/css

app.yml

app:
# ...
    resource_version: <?php echo date_create()->format('YmdHis');

glxAssetHelper.php

<?php
function include_stylesheets_versioned()
{
    $response = sfContext::getInstance()->getResponse();
    sfConfig::set('symfony.asset.stylesheets_included', true);

    $html = '';
    foreach ($response->getStylesheets() as $file => $options) {
        if ((strpos($file, '?') === false) && (stripos($file, 'http') !== 0) ) {
            $file .= '?v='.sfConfig::get('app_resource_version');
        }
        $html .= stylesheet_tag($file, $options);
    }

    echo $html;
}


function include_javascripts_versioned()
{
    $response = sfContext::getInstance()->getResponse();
    sfConfig::set('symfony.asset.javascripts_included', true);

    $html = '';
    foreach ($response->getJavascripts() as $file => $options) {
        if ((strpos($file, '?') === false) && (stripos($file, 'http') !== 0) ) {
            $file .= '?v='.sfConfig::get('app_resource_version');
        }
        
        $html .= javascript_include_tag($file, $options);
    }
    
    echo $html;
}

This automatically busts browser caches for CSS & JS files when you clear your Symfony 1.4 application's cache. This doesn't always make sense.

To use it, put the helper into lib/helper (create the folder if necessary), then add it to the default_modules section in your apps/[APPNAME]/config/settings.yml, and finally replace the include_stylesheets() and include_javascripts() calls in your layout.php with the _versioned() calls.

You can't embed PHP into YAML files in Symfony2, but then you're using Assetic anyway, right?

Excellent Helper! I'll add some clarification about how to implement this for other devs.

In settings.yml you have to configure standard_helpers, not default_modules, like ie:
standard_helpers: [Partial, Cache, glxAsset]
You want to include Partial and Cache, which are the default ones

If you like to do this in a "by template" fashion, you can add this line at the beginning of your layout.php:
<?php use_helper('glxAsset') ?>

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