Look for magic event properties if it's an Arrayable class

resolves #2

Author: brandonkelly

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Release Notes for Webhooks for Craft CMS
 
+## Unreleased
+
+### Changed
+- Webhook requests now include data for any magic event properties defined by `fields()`, if the event class implements `yii\base\Arrayable`. ([#2](https://github.com/craftcms/webhooks/issues/2))   
+
 ## 1.1.1 - 2018-12-17
 
 ### Added

src/Plugin.php

@@ -76,10 +76,10 @@ public function init()
                     ];
 
                     $eventAttributes = $webhook->getEventAttributes();
-                    foreach ((new \ReflectionObject($e))->getProperties() as $property) {
-                        if ($property->isPublic() && $property->getDeclaringClass()->getName() !== Event::class) {
-                            $name = $property->getName();
-                            $data['event'][$name] = $this->toArray($e->$name, $eventAttributes[$name] ?? []);
+                    $ref = new \ReflectionClass($e);
+                    foreach (ArrayHelper::toArray($e, [], false) as $name => $value) {
+                        if (!$ref->hasProperty($name) || $ref->getProperty($name)->getDeclaringClass()->getName() !== Event::class) {
+                            $data['event'][$name] = $this->toArray($value, $eventAttributes[$name] ?? []);
                         }
                     }
                 }