make child interface neutral, support hierarchyinterface as well

Author: dbu

Admin/Extension/ChildExtension.php

@@ -14,6 +14,7 @@
 use Sonata\AdminBundle\Admin\AdminExtension;
 use Sonata\AdminBundle\Admin\AdminInterface;
 use Symfony\Cmf\Bundle\CoreBundle\Model\ChildInterface;
+use Doctrine\ODM\PHPCR\HierarchyInterface;
 
 /**
  * Admin extension to handle child models.
@@ -29,14 +30,26 @@ class ChildExtension extends AdminExtension
      */
     public function alterNewInstance(AdminInterface $admin, $object)
     {
-        if (!$object instanceof ChildInterface) {
-            throw new \InvalidArgumentException('Expected ChildInterface, got ' . get_class($object));
+        if (!$admin->hasRequest()
+            || !$parentId = $admin->getRequest()->get('parent')
+        ) {
+            return;
         }
 
-        if ($admin->hasRequest() && $parentId = $admin->getRequest()->get('parent')) {
-            if ($parent = $admin->getModelManager()->find(null, $parentId)) {
+        $parent = $admin->getModelManager()->find(null, $parentId);
+        if (!$parent) {
+            return;
+        }
+
+        switch($object) {
+            case $object instanceof HierarchyInterface:
                 $object->setParentDocument($parent);
-            }
+                break;
+            case $object instanceof ChildInterface:
+                $object->setParentObject($parent);
+                break;
+            default:
+                throw new \InvalidArgumentException(sprintf('Class %s is not supported', get_class($object)));
         }
     }
 }

Model/ChildInterface.php

@@ -12,17 +12,20 @@
 namespace Symfony\Cmf\Bundle\CoreBundle\Model;
 
 /**
- * An interface for models with a parent document.
+ * An interface for models with a parent object.
+ *
+ * Note that PHPCR-ODM documents will most likely use the HierarchyInterface
+ * of PHPCR-ODM instead.
  */
 interface ChildInterface
 {
     /**
      * @param $parent object
      */
-    public function setParentDocument($parent);
+    public function setParentObject($parent);
 
     /**
      * @return object
      */
-    public function getParentDocument();
+    public function getParentObject();
 }

Tests/Unit/Admin/Extension/ChildExtensionTest.php

@@ -50,7 +50,7 @@ public function testAlterNewInstance()
 
         $child = $this->getMock('Symfony\Cmf\Bundle\CoreBundle\Model\ChildInterface');
         $child->expects($this->once())
-            ->method('setParentDocument')
+            ->method('setParentObject')
             ->with($this->equalTo($parent));
 
         $extension = new ChildExtension();