Fix plugin's compatibility with older discourse versions.

Follow-up to d469260bf9
2021-06-17 09:10:02 +08:00 · 2021-06-17 09:10:02 +08:00 · 14a7649840
parent f5cb5a2ac2
commit 14a7649840
1 changed files with 5 additions and 3 deletions
--- a/plugin.rb
+++ b/plugin.rb
@ -196,9 +196,11 @@ after_initialize do
  end

  # TODO: Switch to an official plugin API once support for it has landed.
-  TopicView.on_preload do |topic_view|
-    if SiteSetting.discourse_post_event_enabled
-      topic_view.instance_variable_set(:@posts, topic_view.posts.includes(:event))
+  if TopicView.respond_to?(:on_preload)
+    TopicView.on_preload do |topic_view|
+      if SiteSetting.discourse_post_event_enabled
+        topic_view.instance_variable_set(:@posts, topic_view.posts.includes(:event))
+      end
    end
  end