I'm building an "appointment time" application, where the user selects an appointment time through a datetime_select field.
I'm trying to validate that the appointment time the user selects is available.
The appointment times are for 30 minutes each, so a user should not be able to create a new appointment time within 30 minutes of an existing appointment.
Do you know how to validate that in the Appintment model?
(e.g.
def validates_available_appointment_time_slot ... end
)
Any ideas?
