Added missing serializer

Change-Id: Ia597d677e3ba9bbb4cbf237d0ea9cc1fa8501349
Signed-off-by: smarcet <smarcet@gmail.com>

app/ModelSerializers/SerializerRegistry.php

@@ -203,7 +203,7 @@ final class SerializerRegistry
 
         $this->registry['SummitCategoryChange'] = SummitCategoryChangeSerializer::class;
         // track chairs
-
+        $this->registry['PresentationTrackChairView'] = PresentationTrackChairViewSerializer::class;
         $this->registry['SummitSelectedPresentationList'] = SummitSelectedPresentationListSerializer::class;
         $this->registry['SummitSelectedPresentation'] = SummitSelectedPresentationSerializer::class;
 

app/ModelSerializers/Summit/Presentation/PresentationTrackChairViewSerializer.php

@@ -0,0 +1,25 @@
+<?php namespace ModelSerializers;
+/**
+ * Copyright 2021 OpenStack Foundation
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+
+/**
+ * Class PresentationTrackChairViewSerializer
+ * @package ModelSerializers
+ */
+final class PresentationTrackChairViewSerializer extends SilverStripeSerializer
+{
+    protected static $array_mappings = [
+        'ViewerId' => 'viewer_id:json_int',
+        'PresentationId' => 'presentation_id:json_int',
+    ];
+}

app/Models/Foundation/Summit/Events/Presentations/TrackChairs/PresentationTrackChairView.php

@@ -15,6 +15,7 @@ use Doctrine\ORM\Mapping AS ORM;
 use models\main\Member;
 use models\summit\Presentation;
 use models\utils\SilverstripeBaseModel;
+use models\utils\One2ManyPropertyTrait;
 /**
  * @ORM\Entity
  * @ORM\Table(name="PresentationTrackChairView")
@@ -23,6 +24,18 @@ use models\utils\SilverstripeBaseModel;
  */
 class PresentationTrackChairView extends SilverstripeBaseModel
 {
+    use One2ManyPropertyTrait;
+
+    protected $getIdMappings = [
+        'getViewerId' => 'viewer',
+        'getPresentationId' => 'presentation',
+    ];
+
+    protected $hasPropertyMappings = [
+        'hasViewer' => 'viewer',
+        'hasPresentation' => 'presentation',
+    ];
+
     /**
      * @ORM\ManyToOne(targetEntity="models\main\Member")
      * @ORM\JoinColumn(name="TrackChairID", referencedColumnName="ID", onDelete="SET NULL")