1 files changed, 7 insertions, 0 deletions
diff --git a/lib/arel/visitors/visitor.rb b/lib/arel/visitors/visitor.rb
index 510d50399b..b0d16ffe4e 100644
--- a/lib/arel/visitors/visitor.rb
+++ b/lib/arel/visitors/visitor.rb
@@ -13,6 +13,13 @@ module Arel
 
       def visit object
         send DISPATCH[object.class], object
+      rescue NoMethodError
+        warn "visiting #{object.class} via superclass, this will be removed in arel 2.2.0" if $VERBOSE
+        superklass = object.class.ancestors.find { |klass|
+          respond_to?(DISPATCH[klass], true)
+        }
+        DISPATCH[object.class] = DISPATCH[superklass]
+        retry
       end
     end
   end