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AssetsHelper.php
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AssetsHelper.php
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Bundle\FrameworkBundle\Templating\Helper;
use Symfony\Component\Asset\Packages;
use Symfony\Component\Asset\VersionStrategy\StaticVersionStrategy;
use Symfony\Component\Templating\Helper\Helper;
/**
* AssetsHelper helps manage asset URLs.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class AssetsHelper extends Helper
{
private $packages;
public function __construct(Packages $packages)
{
$this->packages = $packages;
}
/**
* Returns the public url/path of an asset.
*
* If the package used to generate the path is an instance of
* UrlPackage, you will always get a URL and not a path.
*
* @param string $path A public path
* @param string $packageName The name of the asset package to use
*
* @return string The public path of the asset
*/
public function getUrl($path, $packageName = null, $version = null)
{
// BC layer to be removed in 3.0
if (3 === $count = func_num_args()) {
@trigger_error('Forcing a version for an asset was deprecated in 2.7 and will be removed in 3.0.', E_USER_DEPRECATED);
$args = func_get_args();
return $this->getLegacyAssetUrl($path, $packageName, $args[2]);
}
return $this->packages->getUrl($path, $packageName);
}
/**
* Returns the version of an asset.
*
* @param string $path A public path
* @param string $packageName The name of the asset package to use
*
* @return string The asset version
*/
public function getVersion($path = null, $packageName = null)
{
// no arguments means old getVersion() for default package
if (null === $path) {
@trigger_error('The getVersion() method requires a path as a first argument since 2.7 and will be enforced as of 3.0.', E_USER_DEPRECATED);
return $this->packages->getVersion('/', $packageName);
}
// path and packageName can only be for the new version
if (null !== $packageName) {
return $this->packages->getVersion($path, $packageName);
}
// packageName is null and path not, so path is a path or a packageName
try {
$package = $this->packages->getPackage($path);
} catch (\InvalidArgumentException $e) {
// path is not a package, so it should be a path
return $this->packages->getVersion($path);
}
// path is a packageName, old version
@trigger_error('The getVersion() method requires a path as a first argument since 2.7 and will be enforced as of 3.0.', E_USER_DEPRECATED);
return $this->packages->getVersion('/', $path);
}
private function getLegacyAssetUrl($path, $packageName = null, $version = null)
{
if ($version) {
$package = $this->packages->getPackage($packageName);
$v = new \ReflectionProperty('Symfony\Component\Asset\Package', 'versionStrategy');
$v->setAccessible(true);
$currentVersionStrategy = $v->getValue($package);
$f = new \ReflectionProperty($currentVersionStrategy, 'format');
$f->setAccessible(true);
$format = $f->getValue($currentVersionStrategy);
$v->setValue($package, new StaticVersionStrategy($version, $format));
}
$url = $this->packages->getUrl($path, $packageName);
if ($version) {
$v->setValue($package, $currentVersionStrategy);
}
return $url;
}
/**
* {@inheritdoc}
*/
public function getName()
{
return 'assets';
}
}