How do you validate the availability for a "block of time"?

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?

Bob -

On 1-Oct-08, at 8:09 PM, Bob S. wrote:

Any ideas?
runt is great for managing date blocks

http://runt.rubyforge.org/

J