Removed injection of the kernal. Set the extension to add the purifier_cache_location on load.

Author: dbergunder

DependencyInjection/CaxyHtmlDiffExtension.php

@@ -43,11 +43,14 @@ public function load(array $configs, ContainerBuilder $container)
 
         $cacheDriverId = null;
 
-
         if (!empty($config['doctrine_cache_driver']) && $config['doctrine_cache_driver']['enabled']) {
             $cacheDriverId = $this->loadCacheDriver('doctrine_cache_driver', $config['doctrine_cache_driver'], $container);
         }
 
+        if (!isset($config['purifier_cache_location']) {
+            $config['purifier_cache_location'] = $container->getParameter('kernel.cache_dir');
+        }
+
         foreach ($config as $key => $value) {
             $container->setParameter($this->getAlias() . '.' . $key, $value);
         }

DependencyInjection/Configuration.php

@@ -5,7 +5,6 @@
 use Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition;
 use Symfony\Component\Config\Definition\Builder\TreeBuilder;
 use Symfony\Component\Config\Definition\ConfigurationInterface;
-use Symfony\Component\HttpKernel\KernelInterface;
 
 /**
  * This is the class that validates and merges configuration from your app/config files
@@ -14,13 +13,6 @@
  */
 class Configuration implements ConfigurationInterface
 {
-    protected $kernel;
-
-    public function __construct(KernelInterface $kernel)
-    {
-        $this->kernel = $kernel;
-    }
-
     /**
      * {@inheritDoc}
      */
@@ -46,7 +38,7 @@ public function getConfigTreeBuilder()
                     ->defaultTrue()
                 ->end()
                 ->scalerNode('purifier_cache_location')
-                    ->defaultValue($this->kernel->getCacheDir())
+                    ->defaultNull()
                 ->end()
                 ->integerNode('match_threshold')->end()
                 ->append($this->getDoctrineCacheDriverNode('doctrine_cache_driver'))