FIX: check for existence of topic before looking for category

2018-05-17 10:49:01 +05:30 · 2018-05-17 10:49:01 +05:30 · 392f184b24
parent aee4045dd0
commit 392f184b24
1 changed files with 1 additions and 1 deletions
--- a/app/mailers/user_notifications.rb
+++ b/app/mailers/user_notifications.rb
@ -421,7 +421,7 @@ class UserNotifications < ActionMailer::Base
    end

    # category name
-    category = Topic.find_by(id: post.topic_id).category
+    category = Topic.find_by(id: post.topic_id)&.category
    if opts[:show_category_in_subject] && post.topic_id && category && !category.uncategorized?
      show_category_in_subject = category.name