close this ticket.

(tested on edge and 2.2.2)

(and ruby 1.8.6 and 1.8.7 on osx)

very stupid patch that seems to do what i want:

@@ -45,7 +50,8 @@
 
         (only_keys || hash.keys).each do |key|
           if value = hash[key]
-            elements << value.to_query(key)
+            elements << value.to_query(key) unless value.is_a? Hash
+            elements << value.to_query() if value.is_a? Hash
           end
         end

nevermind, some vendored gem had its own to_query...

close this.