Exterior drivers side door look fell inside door

What's the best way to replace the exterior door lock in the exterior door handle?

This happened to me a while ago and nothing needed to be replaced. Just remove your interior door panel andyou will find the lock/keyhole just laying in there and there will be two boltsthat attach it to the door. Just find those two bolts on the bottom of the door and put them on and use some loctite to avoid this again. This was done on an 08' hatch BTW.

Thanks for the reply