> I have a form with with 5 text fill ins, and I want to check to see if
> some
> aren't entered. For instance, I might have Field 1,2, and 5 filled in and
> 3 and 4 blank. I was using code like this:
> <CFLOOP index="Answers" from="1" to="5" step="1">
> <CFSET Form.AnswerHeading=Form["AnswerHeading"&Answers]>
> <CFSET Form.AnswerValue=Form["AnswerValue"&Answers]>
> <CFSET Form.AnswerID=Form["AnswerID"&Answers]>
> To get the data from the form fields, but if the field is blank this
> crashes, and I can't get an IsDefined to work - I was using this:
> <CFIF IsDefined("Form["AnswerValue"&Answers]">
> Any ideas would be appreciated.
Yea, you don't want to use array notation with IsDefined() generally
speaking ... although the syntax above is broken anyway... You would need to
use single-quotes within the double-quotes of the IsDefined() for the array
notation on the form, and you need to close the isdefined() parenthesis on
the end... however... generally speaking, if you want to check to see if a
form parameter is defined, I would use
<cfif isdefined("form.AnswerValue#answers#")>
and just make sure none of your form field names contain any special
characters like hyphens. If you really need a hypen, you can check the keys
of the form structure with something like this
<cfif ListFindNoCase(StructKeyList(form),"AnswerValue#answers#")>
Otherwise, as a general rule, rather than using IsDefined(), I would use a
<cfparam> tag to ensure that the form variable exists ( again, avoid special
characters ) ...
<cfparam name="form.AnswerValue#answers#" type="string" value="">
And remember to double-check your form fields with the CF debugging
output... if necessary use <cfsetting showdebugoutput="yes"> at the top of
your page -- although I think you still have to have your ip address in the
cfadmin's debugging ip's for that to work.
hth
Isaac Dealey
Certified Advanced ColdFusion Developer
www.turnkey.to
954-776-0046
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