deleting attachments when master / sub task is deleted

be/app/Models/MasterTask.php

@@ -53,4 +53,15 @@ class MasterTask extends Model
         // return random value from array
         return collect(['#E9FFE5', '#F6ECD3', '#FDE1FF', '#FFC9C9', '#DADEF8', '#EDFFFE'])->random();
     }
+
+    public function deleteAttachments()
+    {
+        foreach ( $this->attachments as $attachment ) {
+            $attachment->deleteFromS3();
+        }
+
+        $this->attachments()->delete();
+
+        return true;
+    }
 }