RE: [Zope] Validating Form Data

5 Mar 2002

      Zope doesn't do client-side validation like Javascript.

I you want server side validation, try Formulator.  )
It has built in handling of validation and error handling.
And join the Formulator mailing-list.

Or follow this pseudo-schema that has the form post to itself, and you do
all your data handling with data in REQUEST.

<dtml-if expr="REQUEST.REQUEST_METHOD=='POST'">
<dtml-try>
  <dtml-call "yourValidationscript(REQUEST)">
  <dtml-except>
    ## yourValidationscript returns errors
    <dtml-var yourerrorhandlingscript>
    ## displays the errors and repost the form
    <dtml-var yourHTMLform>

  <dtml-else>
     ## everything passed validation in yourValidationscript
     <dtml-var dosomethingwithData>

</dtml-try>

<dtml-else>
  ## Nothing has been 'POSTed',
  ## this is your first time through, so just present the HTML form
  <dtml-var yourHTMLform>

</dtml-if>

Cheers,
-Trevor
...
-----Original Message-----
From: zope-admin@zope.org [mailto:zope-admin@zope.org]On Behalf Of Mike
Tran
Sent: Tuesday, March 05, 2002 11:19 AM
To: zope@zope.org
Cc: lazug@lazug.org
Subject: [Zope] Validating Form Data
I am using the Javascript below to validate data on my form.  The
part where
it validate form data works fine.  My problem is when I call on
the method
"insertResume", my form variables does not get passed.
For example, on the form i have a textbox field called "age".  I
reference
this in the "insertResume" method with <dtml-var age>, but the
age variable
does not get passed from the form to the "insertResume" method.
Does anyone have any idea on how to fix this or maybe show me how
to validate
form data in Zope?  I've tried <dtml-unless> but the user have to go to
another page and go back to the form itself to correct the data. With
Javascript the user can stay on the same page.
Thanks,
<SCRIPT LANGUAGE="JavaScript">
<!--
function valid(form) {
  var field = form.age;
  var userAge = parseInt(field.value);
  if (!userAge) {
    alert("You must indicate your age.");
    return false;
  } else if (userAge >= 18) {
      alert("Thank your for your resume.");
      return true;
    } else {
        alert("You are only " + userAge + ". Try again when you
are 18.");
        field.focus();
        field.select();
        return false;
      }
}
// -->
</SCRIPT>
<FORM METHOD="POST" ACTION="insertResume" onSubmit="return valid(this)">
Your age:<BR><INPUT TYPE="text" NAME="age" SIZE="2"><BR>
Desired Job:<BR><INPUT TYPE="text" NAME="job" SIZE="40"><BR>
Resume:<BR><TEXTAREA NAME="resume" COLS="40" ROWS="5"></TEXTAREA><BR>
<INPUT TYPE="submit" VALUE="Send Resume">
</FORM>
--
Mike
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RE: [Zope] Validating Form Data

Trevor Toenjes