>- see footer for list info -<
Yes it is, generally I am validating forms quiet a lot, and I'm just trying
to get an idea of the best method, which I can use every time I need to
validate a form.


 -----Original Message-----
From:   [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]  On Behalf Of Duncan Cumming
Sent:   24 November 2004 16:30
To:     [EMAIL PROTECTED]
Subject:        Re: [CF-Dev] Best way to check if a form field is empty

>- see footer for list info -<
two ways:
1. Javascript on the page with the form.  Either use <cfinput
required="yes" message="Please enter your name">, or roll your own.
Problems - requires Javascript to be enabled in the browser to work, so
disabling javascript gets around the validation.

2. Server-side with validation.  On the page you submit to, have
something like:
<cfparam name="Form.fieldname1" default="">
<cfparam name="Form.fieldname2" default="">

<cfif NOT Len(Trim(Form.fieldname1))>
  <cflocation url="page1.cfm?error=fieldname1">
</cfif>
<cfif NOT Len(Trim(Form.fieldname2))>
  <cflocation url="page1.cfm?error=fieldname2">
</cfif>


Then on the first page, have something like:

<cfparam name="URL.error" default="">
<cfif Len(URL.error)>
  <cfswitch expression="#URL.error#">
    <cfcase value="fieldname1">
      You must enter a value for fieldname 1
    </cfcase>
    <cfcase value="fieldname2">
      You must enter a value for fieldname 2
    </cfcase>
  </cfswitch>
</cfif>

Very basic, but gives you an idea of what to do.  Of course I'm
assuming this is why you want to know if the field is empty.

Duncan Cumming
New Media Developer
700 4105 / 01592 414105

>>> [EMAIL PROTECTED] 24/11/2004 16:12:10 >>>
>- see footer for list info -<


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