From 8ec05c490503afefa91dd3b2f6d5037115bc02e1 Mon Sep 17 00:00:00 2001
From: lubo <npeasy@163.com>
Date: Mon, 25 Mar 2019 18:04:31 +0800
Subject: [PATCH] bugfix when posts is not needed when showing discussion (#17)

When accessing /api/discussion/[id]?include=user, NOTICE occurs
---
 extensions/flags/src/Listener/AddPostFlagsRelationship.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/extensions/flags/src/Listener/AddPostFlagsRelationship.php b/extensions/flags/src/Listener/AddPostFlagsRelationship.php
index e0d2c5b8c..62b2d9fb7 100755
--- a/extensions/flags/src/Listener/AddPostFlagsRelationship.php
+++ b/extensions/flags/src/Listener/AddPostFlagsRelationship.php
@@ -100,7 +100,9 @@ class AddPostFlagsRelationship
         // models) so that we can selectively expose only the flags that the
         // user has permission to view.
         if ($event->isController(Controller\ShowDiscussionController::class)) {
-            $posts = $event->data->getRelation('posts');
+            if ($event->data->relationLoaded('posts')) {
+                $posts = $event->data->getRelation('posts');
+            }
         }
 
         if ($event->isController(Controller\ListPostsController::class)) {