activeresource - How to convert rails active resource object to hash? -

let's have active resource object fetched following:

x = resource.find(some_id) 

and x in remote server has field h complex nested hashes represented here nested active resource objects, accessing tedious task, possible convert h hash? can make call resource.get(some_id) , result 1 big hash, risky resource -theoretically- may have changed between subsequent calls, there way convert active resource object hash ?

edit

for more clarification, suppose invoice record r[id=some_id] has attribute extras, hash value: {:x=>1, :y=>2, :z=>{:a=>1, :b=>2}}

then when fetching record through active resource, following result extras field, -extracted response-:

   "extras"=>     #<app::invoice::extras:0x00000008202cb0      @attributes=       {"x"=>1,        "y"=>2,        "z"=>         #<app::invoice::extras::z:0x00000008201978          @attributes={"a"=>1, "b"=>2},          @persisted=true,          @prefix_options={}>},      @persisted=true,      @prefix_options={}>, 

then how convert extras field ruby hash ?

json.parse(x.to_json) did trick.