The nicest way would be to use a JavaScript clientside script on the form
page.
I think you can find a good one @ javascript.internet.com

If you don't want to use Javascript, you can use the regular expression
found from the javascript and use it in a python method of module.

----- Original Message -----
From: Stacy Formby <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, July 17, 2000 7:57 PM
Subject: [Zope] How to require an @ symbol in email form field??


> Hello,
>
> I am new to Zope; since our webmaster left I'm trying to make small
> changes to the website. We have a standard registration form that
> collects information from users (first name, last name, email, company
> name, etc.) All of the fields are required, except address 2, address3.
>
> Great. fine. If the user doesn't fill out a field, they get an alert.
> But they can fill each field out with gibberish--as long as there is a
> character in the input, we accept it.
>
> Is there a way to require at least an "@" sign in the email field? The
> powers that be think this would be useful.
>
> Here's the form processing code as it stands today. Any help is
> appreciated.
>
> Sformby
>
> <!-- Check whether any fields are missing. --> <dtml-in required>
> <dtml-comment>
> The length of the following expr is due to the fact that some types of
> form elements
> (e.g. text) always create a var, while others (e.g. radio) don't.
> </dtml-comment>
>
> <dtml-unless expr="REQUEST.form.has_key(_['sequence-key']) and
> REQUEST.form[_['sequence-key']]">
> <dtml-call request.set(missing_fields1)"> </dtml-unless> </dtml-in>
>
>  <!-- If fields are missing, inform the user. -->
> <dtml-if request.has_key(missing_fields')"> The following input fields
> are required
> and have not been filled out: <!-- List missing fields. -->
> <ul>
>   <dtml-in required> <dtml-unless
> expr="REQUEST.form.has_key(_['sequence-key']) and
> REQUEST.form[_['sequence-key']]">
>   <li><dtml-var sequence-item>
>   </dtml-unless> </dtml-in>
> </ul>
> Please click on your browser's "Back" button to update your information,
> or <a href="registration.html">click
> here</a> to start over. <dtml-else>
>
>
>
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