Extensibility for custom staff check

lib/staff_constraint.rb

@@ -4,9 +4,17 @@ class StaffConstraint
 
   def matches?(request)
     provider = Discourse.current_user_provider.new(request.env)
-    provider.current_user && provider.current_user.staff?
+    provider.current_user &&
+      provider.current_user.staff? &&
+      custom_staff_check(request)
   rescue Discourse::InvalidAccess
     false
   end
 
+  # Extensibility point: plugins can overwrite this to add additional checks
+  # if they require.
+  def custom_staff_check(request)
+    true
+  end
+
 end