project - car rental services
a few tables and forms created such as new rental, add new car, view car details, add new customer, view customer details
After a customer makes rental, logically the car will be not avaiable for the next customer.
how can the form automatically add a sentence " currently unavailable " in view car details after a customer make rental?
attributes in rental ::: rental id , customer id , rent time , rent date , car id , numbers of day rent
how can i do it??