On our site we need to take bookings for a hall that can be booked for numbers of occasions, like the Birthday Party, Conference Meeting Room, Corporate Training, or for any such other purpose. We have a different landing page for all such purposes for SEO. However, we have the single hall as an inventory, so we can take a single booking per a day.
Gravity form works well for all we need including payment, however we're unable to figure out how to make it validate if the hall is already booked for that particular day.
I need some advise on how to prevent gravity form accept booking for any such day where it has been already booked, and allow booking only for the days where it is not booked. So its a date against which we might need to validate. But how to do it?
Thank you in advance.