Change the values of the selection-based form field?

Hi all

I'm working on a schedule based on a school I'm having a hard time, my brain around programming package.  My DB table has 3 columns - ApptDate ApptTime, ApptSlots.  Most of the ApptDates are listed more than once because there is more than one time for a date.  See example below:

ApptDate ApptTime ApptSlots
09/09/201415:002
09/09/201415:302
09/09/201416:002

The page queries this table for all data.  Then, there is a query of this query that selects the different dates and returns them in a drop - the first step of a user to choose their appointment.  The form field depending on whether I'll have is a drop down for time.  What I want to happen is based on the date of the user's selection, the corresponding time will appear in the drop-down time, as long as ApptSlots gt 0.  Before the user selects a date, I want the time drop down to be hidden or disabled.

Is this possible or am I dreaming?

Thanks for the help!

Great explanation. Your explanation is simple, just so proceed and code as you say. No complication, not even AJAX, nothing. Wrapping your brain around it, makes it appear more difficult than it is.

I'll give you some tips to help you get started. First of all, what you call a database table is not really one. Add an extra column in the table, a primary key. For example, apptID, integer type, 1, 2, 3,..., etc., which gives each appointment a unique ID.

Then continue like this:

/ * select distinct apptDate as availableDate * /.

  


/ * Select apptTime as availableTime where apptDate = ' #session.selectedDate # ' * /.


Tags: ColdFusion

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