Symfony2 predefined parameters - symfony

Question

I find some predefined parameters in Symfony2 configuration files, ie. %kernel.root_dir%, %kernel.debug%.
Is there a comprehensive list of these somewhere?

Answer 1

They're under Symfony\Component\HttpKernel\Kernel.php;
/**
* Returns the kernel parameters.
*
* #return array An array of kernel parameters
*/
protected function getKernelParameters()
{
$bundles = array();
foreach ($this->bundles as $name => $bundle) {
$bundles[$name] = get_class($bundle);
}
return array_merge(
array(
'kernel.root_dir' => $this->rootDir,
'kernel.environment' => $this->environment,
'kernel.debug' => $this->debug,
'kernel.name' => $this->name,
'kernel.cache_dir' => $this->getCacheDir(),
'kernel.logs_dir' => $this->getLogDir(),
'kernel.bundles' => $bundles,
'kernel.charset' => $this->getCharset(),
'kernel.container_class' => $this->getContainerClass(),
),
$this->getEnvParameters()
);
}

Answer 2

You can also see them in app/cache/dev/appDevDebugProjectContainer.php:getDefaultParameters() (it's at the end of the file), along with all the other parameters available to your application.
/**
* Gets the default parameters.
*
* #return array An array of the default parameters
*/
protected function getDefaultParameters()
{
return array(
'kernel.root_dir' => $this->targetDirs[2],
'kernel.environment' => 'dev',
'kernel.debug' => true,
'kernel.name' => 'app',
'kernel.cache_dir' => __DIR__,
'kernel.logs_dir' => ($this->targetDirs[2].'/logs'),
...
);
}