Add a check to see if the ride is full when a users attempts to pay
Add a check to see if the ride is full when a users attempts to pay

We want to make sure that users can’t pay for the ride when it is full. Even if the frontend allows them to, the backend should catch this and throw an error.

Signed-off-by: Michael Willmott <4063ad43ea4e0ae77bf35022808393a246bdfa61@gmail.com>

mwillmott/techbikers,Techbikers/techbikers,mwillmott/techbikers,Techbikers/techbikers,Techbikers/techbikers,mwillmott/techbikers,mwillmott/techbikers,Techbikers/techbikers