delete notification when referenced entity is deleted (#414)

Signed-off-by: Vinzenz Rosenkranz <vinzenz.rosenkranz@uni-tuebingen.de>

CHANGELOG.md

@@ -1,6 +1,10 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
+## 0.9.12
+### Fixed
+- App not useable when a notifications with a reference to a deleted entity exists
+
 ## 0.9.11
 ### Fixed
 - Error on page access with no installed plugins (because Plugin directory is missing)

app/Notification.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace App;
+
+use Illuminate\Database\Eloquent\Model;
+
+class Notification extends Model
+{
+    public $incrementing = false;
+}

app/Observers/EntityObserver.php

@@ -3,6 +3,7 @@
 namespace App\Observers;
 
 use App\Entity;
+use App\Notification;
 use App\Notifications\EntityUpdated;
 use App\User;
 use Illuminate\Database\Eloquent\ModelNotFoundException;
@@ -37,5 +38,7 @@ public function saving(Entity $entity)
     public function deleted(Entity $entity)
     {
         Entity::where('root_entity_id', $entity->root_entity_id)->where('rank', '>', $entity->rank)->decrement('rank');
+        // Delete notifications where the deleted entity is referenced
+        Notification::whereRaw("(data::json->>'resource')::json->>'id' = ?", [$entity->id])->delete();
     }
 }

package.json

@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "spacialist",
-    "version": "0.9.7",
+    "version": "0.9.12",
     "description": "A Virtual Research Environment for the Spatial Humanities",
     "repository": {
         "type": "git",