When removing a component, clean up the subscriptions. Closes #1739

app/Bus/Handlers/Events/Component/CleanupComponentSubscriptionsHandler.php

@@ -0,0 +1,40 @@
+<?php
+
+/*
+ * This file is part of Cachet.
+ *
+ * (c) Alt Three Services Limited
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace CachetHQ\Cachet\Bus\Handlers\Events\Component;
+
+use CachetHQ\Cachet\Bus\Events\Component\ComponentWasRemovedEvent;
+use CachetHQ\Cachet\Models\Component;
+use CachetHQ\Cachet\Models\Subscription;
+
+/**
+ * This is the cleanup component subscriptions handler.
+ *
+ * @author James Brooks <james@alt-three.com>
+ */
+class CleanupComponentSubscriptionsHandler
+{
+    /**
+     * Handle the event.
+     *
+     * @param \CachetHQ\Cachet\Bus\Events\Component\ComponentWasRemovedEvent $event
+     *
+     * @return void
+     */
+    public function handle(ComponentWasRemovedEvent $event)
+    {
+        $component = $event->component;
+        $subscription = Subscription::forComponent($component->id);
+
+        // Cleanup the subscriptions.
+        $subscription->delete();
+    }
+}

app/Foundation/Providers/EventServiceProvider.php

@@ -34,7 +34,7 @@ class EventServiceProvider extends ServiceProvider
             //
         ],
         'CachetHQ\Cachet\Bus\Events\Component\ComponentWasRemovedEvent' => [
-            //
+            'CachetHQ\Cachet\Bus\Handlers\Events\Component\CleanupComponentSubscriptionsHandler',
         ],
         'CachetHQ\Cachet\Bus\Events\Component\ComponentWasUpdatedEvent' => [
             'CachetHQ\Cachet\Bus\Handlers\Events\Component\SendComponentUpdateEmailNotificationHandler',

tests/Bus/Events/Component/ComponentWasRemovedEventTest.php

@@ -18,7 +18,7 @@ class ComponentWasRemovedEventTest extends AbstractComponentEventTestCase
 {
     protected function objectHasHandlers()
     {
-        return false;
+        return true;
     }
 
     protected function getObjectAndParams()