On 5/2/07, Chipp Walters <[EMAIL PROTECTED]> wrote:
Sarah,
Do you have any date validator functions laying around. If so, could
you pour me a cupful? Thanks ;-)
Hi Chipp,
Here is one I use sometimes. If the supplied date is OK, it returns
that date as a short date but with the year as 4 digits, however you
can easily modify that. The parameter must be in English format.
It uses 2 methods: firstly checking whether the supplied date can be
converted to dateItems and then assembling those items into a short
date and seeing if that converts to the same seconds as the supplied
date.
The only peculiarity I have found is that negative years will work.
year -1 becomes 1999 and so on.
function checkDate pDate
put pDate into formDate
convert formDate to dateItems
if the number of items in formDate <> 7 then return "error"
put item 2 of formDate & "/" & item 3 of formDate & "/" & item 1
of formDate into formDate
put formDate into formSecs
convert formSecs to seconds
convert pDate to seconds
if formDate is a date and formSecs = pDate then
return formDate
else
return "error"
end if
end checkDate
My preferred method of date validation is not to allow direct date
entry but only to let people choose a date from a calendar. There is
one on my web site which anyone is welcome to use
<http://www.troz.net/Rev/libraries.php>.
Cheers,
Sarah
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