Get location co-ordinate In ruby on rails

I've heard of Geocoder and Geokit but what I know is that they only work if we provide their functions some parameters . either city /country name or location co-ordinates . But what i want is to get my own location either 'Area name' or latitude or longitude in ruby on rails ,with any gem . Don't suggest request.location because it give me localhost address , not my internet ip .so plz suggest anything reasonable because i'm totally freaked out