From 8233610d92fb7241658c6888f378c5ddd587e324 Mon Sep 17 00:00:00 2001
From: Guo Xiang Tan <gxtan1990@gmail.com>
Date: Mon, 11 May 2020 16:26:43 +0800
Subject: [PATCH] DEV: Add `add_controller_callback` server side plugin api.

---
 lib/plugin/instance.rb | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lib/plugin/instance.rb b/lib/plugin/instance.rb
index 5f218ab699b..d8bc0b49a4e 100644
--- a/lib/plugin/instance.rb
+++ b/lib/plugin/instance.rb
@@ -235,6 +235,16 @@ class Plugin::Instance
     end
   end
 
+  def add_controller_callback(klass_name, callback, &block)
+    reloadable_patch do |plugin|
+      klass = klass_name.to_s.classify.constantize rescue klass_name.to_s.constantize
+
+      klass.public_send(callback) do |controller, action|
+        block.call(controller, action) if plugin.enabled?
+      end
+    end
+  end
+
   # Add a post_custom_fields_whitelister block to the TopicView, respecting if the plugin is enabled
   def topic_view_post_custom_fields_whitelister(&block)
     reloadable_patch do |plugin|