Add PASS_THRU extraction

docs/08. Mapping reference.md

@@ -39,8 +39,8 @@ Otherwise, this URI will returns a 404. By default, this is set to false for bet
 works if `routable` is set to true.
 * `extraction`: defines how an association is rendered by the resource renderer. This can take the values `NONE` (the
 association is not rendered and completely removes from the payload), `EMBED` (the association is recursively extracted
-using the bound hydrator in the associated resource metadata) and `ID` (only the identifier(s) is/are rendered). The
-default value is `ID`.
+using the bound hydrator in the associated resource metadata), `ID` (only the identifier(s) is/are rendered) and
+`PASS_THRU` (it reuses what is rendered by the hydrator of the parent object). The default value is `ID`.
 
 ### Navigation
 

src/ZfrRest/Resource/Metadata/Annotation/Association.php

@@ -39,7 +39,7 @@ final class Association implements AnnotationInterface
     /**
      * @var string
      *
-     * @Enum({"NONE", "EMBED", "ID"})
+     * @Enum({"NONE", "EMBED", "ID", "PASS_THRU"})
      */
     public $extraction = ResourceMetadataInterface::ASSOCIATION_EXTRACTION_ID;
 

src/ZfrRest/Resource/Metadata/ResourceMetadataInterface.php

@@ -28,9 +28,10 @@ interface ResourceMetadataInterface
     /**
      * Extraction constants that define how extraction associations are rendered
      */
-    const ASSOCIATION_EXTRACTION_NONE  = 'NONE';
-    const ASSOCIATION_EXTRACTION_EMBED = 'EMBED';
-    const ASSOCIATION_EXTRACTION_ID    = 'ID';
+    const ASSOCIATION_EXTRACTION_NONE      = 'NONE';
+    const ASSOCIATION_EXTRACTION_EMBED     = 'EMBED';
+    const ASSOCIATION_EXTRACTION_ID        = 'ID';
+    const ASSOCIATION_EXTRACTION_PASS_THRU = 'PASS_THRU';
 
     /**
      * Create a new resource from the metadata

src/ZfrRest/View/Renderer/DefaultResourceRenderer.php

@@ -208,6 +208,11 @@ protected function renderAssociations(array $data, ResourceMetadataInterface $re
                 continue;
             }
 
+            // If set to PASS_THRU, we let the parent hydrator do its own transform
+            if ($extractionStrategy === ResourceMetadataInterface::ASSOCIATION_EXTRACTION_PASS_THRU) {
+                continue;
+            }
+
             // Otherwise, we render the association
             $isCollectionValued = $classMetadata->isCollectionValuedAssociation($association);
             $data[$association] = $this->renderAssociation(

tests/ZfrRestTest/Asset/Hydrator/UserWithRoleHydrator.php

@@ -0,0 +1,43 @@
+<?php
+/*
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the MIT license.
+ */
+
+namespace ZfrRestTest\Asset\Hydrator;
+
+use Zend\Stdlib\Exception;
+use Zend\Stdlib\Hydrator\ClassMethods;
+
+/**
+ * @author  Michaël Gallego <mic.gallego@gmail.com>
+ * @licence MIT
+ */
+class UserWithRoleHydrator extends ClassMethods
+{
+    public function extract($object)
+    {
+        $payload = parent::extract($object);
+        $roles   = $object->getRoles();
+
+        $payload['roles'] = []; // Clear automatic extraction from ClassMethods
+
+        foreach ($roles as $role) {
+            $payload['roles'][] = $role->getName();
+        }
+
+        return $payload;
+    }
+}

tests/ZfrRestTest/Asset/Resource/Metadata/Annotation/Role.php

@@ -0,0 +1,71 @@
+<?php
+/*
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the MIT license.
+ */
+
+namespace ZfrRestTest\Asset\Resource\Metadata\Annotation;
+
+use Doctrine\ORM\Mapping as ORM;
+use ZfrRest\Resource\Metadata\Annotation as REST;
+
+/**
+ * @ORM\Entity
+ */
+class Role
+{
+    /**
+     * @ORM\Id
+     * @ORM\Column(type="integer")
+     */
+    protected $id;
+
+    /**
+     * @ORM\Column(type="string")
+     */
+    protected $name;
+
+    /**
+     * @param (int) $id
+     */
+    public function setId($id)
+    {
+        $this->id = (int) $id;
+    }
+
+    /**
+     * @return int
+     */
+    public function getId()
+    {
+        return $this->id;
+    }
+
+    /**
+     * @param string $name
+     */
+    public function setName($name)
+    {
+        $this->name = (string) $name;
+    }
+
+    /**
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+}

tests/ZfrRestTest/Asset/Resource/Metadata/Annotation/UserWithRoles.php

@@ -0,0 +1,106 @@
+<?php
+/*
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the MIT license.
+ */
+
+namespace ZfrRestTest\Asset\Resource\Metadata\Annotation;
+
+use Doctrine\Common\Collections\ArrayCollection;
+use Doctrine\Common\Collections\Collection;
+use Doctrine\ORM\Mapping as ORM;
+use ZfrRest\Resource\Metadata\Annotation as REST;
+
+/**
+ * @ORM\Entity
+ * @REST\Resource(hydrator="ZfrRestTest\Asset\Hydrator\UserWithRoleHydrator")
+ */
+class UserWithRoles
+{
+    /**
+     * @ORM\Id
+     * @ORM\Column(type="integer")
+     */
+    protected $id;
+
+    /**
+     * @ORM\Column(type="string")
+     */
+    protected $username;
+
+    /**
+     * @ORM\ManyToMany(targetEntity="Role")
+     * @REST\Association(extraction="PASS_THRU")
+     */
+    protected $roles;
+
+    public function __construct()
+    {
+        $this->roles = new ArrayCollection();
+    }
+
+    /**
+     * @param (int) $id
+     */
+    public function setId($id)
+    {
+        $this->id = (int) $id;
+    }
+
+    /**
+     * @return int
+     */
+    public function getId()
+    {
+        return $this->id;
+    }
+
+    /**
+     * @param string $username
+     */
+    public function setUsername($username)
+    {
+        $this->username = (string) $username;
+    }
+
+    /**
+     * @return string
+     */
+    public function getUsername()
+    {
+        return $this->username;
+    }
+
+    /**
+     * @param Collection $roles
+     * @return void
+     */
+    public function setRoles(Collection $roles)
+    {
+        $this->roles->clear();
+
+        foreach ($roles as $role) {
+            $this->roles->add($role);
+        }
+    }
+
+    /**
+     * @return ArrayCollection
+     */
+    public function getRoles()
+    {
+        return $this->roles;
+    }
+}

tests/ZfrRestTest/View/Renderer/DefaultResourceRendererTest.php

@@ -18,6 +18,7 @@
 
 namespace ZfrRestTest\View\Renderer;
 
+use Doctrine\Common\Collections\ArrayCollection;
 use Zend\Paginator\Adapter\ArrayAdapter;
 use Zend\Paginator\Paginator;
 use Zend\Stdlib\Hydrator\HydratorPluginManager;
@@ -26,8 +27,10 @@
 use ZfrRest\View\Model\ResourceModel;
 use ZfrRest\View\Renderer\DefaultResourceRenderer;
 use ZfrRestTest\Asset\Resource\Metadata\Annotation\Address;
+use ZfrRestTest\Asset\Resource\Metadata\Annotation\Role;
 use ZfrRestTest\Asset\Resource\Metadata\Annotation\Tweet;
 use ZfrRestTest\Asset\Resource\Metadata\Annotation\User;
+use ZfrRestTest\Asset\Resource\Metadata\Annotation\UserWithRoles;
 use ZfrRestTest\Util\ServiceManagerFactory;
 
 /**
@@ -422,4 +425,34 @@ public function testCanRenderCollectionResourceAsPaginator()
 
         $this->assertEquals($expectedPayload, $payload);
     }
+
+    public function testCanRenderResourceWithPassThruExtraction()
+    {
+        $role = new Role();
+        $role->setId(1);
+        $role->setName('member');
+
+        $user = new UserWithRoles();
+        $user->setId(2);
+        $user->setUsername('bakura');
+        $user->setRoles(new ArrayCollection([$role]));
+
+        $metadata = $this->resourceMetadataFactory->getMetadataForClass(
+            'ZfrRestTest\Asset\Resource\Metadata\Annotation\UserWithRoles'
+        );
+
+        // In this test, we enforce that association extraction is set to PASS_THRU
+        $metadata->propertyMetadata['associations']['roles']['extraction'] = 'PASS_THRU';
+
+        $resourceModel = new ResourceModel(new Resource($user, $metadata));
+        $payload       = $this->resourceRenderer->render($resourceModel);
+
+        $expectedPayload = [
+            'id'       => 2,
+            'username' => 'bakura',
+            'roles'    => ['member']
+        ];
+
+        $this->assertEquals($expectedPayload, $payload);
+    }
 }