[Zope] In DTML, no cookie then default. How?

[Phil Harris]

Simon,

try something like (untested):

<dtml-unless thing_cookie>
<dtml-call "REQUEST.set('thing_cookie','default value for the cookie')">
</dtml-unless>

You may need to change the unless stuff, to something like <dtml-unless
"REQUEST.cookies.has_key('thing_cookie')">, or similar.

hth

Phil
phil.harris@zope.co.uk

----- Original Message -----
From: Blandford, Simon [BSS Audio UK]
To: 'zope@zope.org'
Sent: Wednesday, June 20, 2001 2:10 PM
Subject: [Zope] In DTML, no cookie then default. How?


Hi,

I have worked out how to store cookies and retreive them in DTML to store
preferences on a form.

Question.
If the cookie isn't there yet or gets deleted/rejected etc. How do I insert
a default value into the name space?

What I need is something like...
if <thing> isn't there then <thing>=some default value.

What would solve my problems would be if <dtml-let> didn't need a closing
</dtml-let>.

Background...

This cookie is used to enter a preference value in a form, thus...

 <tr>
  <th align="left">Batch Size</th>
  <td><input type='integer' name='batch_size:int' size=2
   value="&dtml.missing-batch_size;" /></td>
 </tr>

When the form is entered the cookie is set to the value inserted by the
user, thus...
<dtml-if "REQUEST.has_key('batch_size')">
 <dtml-call "RESPONSE.setCookie('batch_size', batch_size, expires='Wed, 19
Feb 2020 14:28:00 GMT')">
</dtml-if>

When the user comes back to the form, the value of batch_size is magically
read from the cookie as a default again.

Problem...
The form is called for the first time so there is no cookie. How do I set
batch_size to a default value?

Regards,
Simon.