register an autoloader for proxies to avoid issues when unserialising (#40)

* register an autoloader for proxies to avoid issues when unserialising

* fix case where container is not initalized

* removed ignore

* fixed boot

* re-add getContainerExtension method

Author: ikwattro

Neo4jBundle.php

@@ -10,8 +10,37 @@
  */
 class Neo4jBundle extends Bundle
 {
+    private $autoloader;
+
     public function getContainerExtension()
     {
         return new Neo4jExtension();
     }
+
+    public function boot()
+    {
+        // Register an autoloader for proxies to avoid issues when unserializing them when the OGM is used.
+        if ($this->container->has('neo4j.entity_manager')) {
+            // See https://github.com/symfony/symfony/pull/3419 for usage of references
+            $container = &$this->container;
+            $this->autoloader = function ($class) use (&$container) {
+                if (0 === strpos($class, 'neo4j_ogm_proxy')) {
+                    $cacheDir = $container->getParameter('kernel.cache_dir').DIRECTORY_SEPARATOR.'neo4j';
+                    $file = $cacheDir.DIRECTORY_SEPARATOR.$class.'.php';
+                    if (file_exists($file)) {
+                        require_once $file;
+                    }
+                }
+            };
+            spl_autoload_register($this->autoloader);
+        }
+    }
+
+    public function shutdown()
+    {
+        if (null === $this->autoloader) {
+            return;
+        }
+        spl_autoload_unregister($this->autoloader);
+    }
 }