[Zope] Syntax for zpt form and submitting to a dtml method

[Tino Wildenhain]

Hi Laura,

Am Di, den 21.09.2004 schrieb Laura McCord um 22:16:
> For learning purposes if I have a zope page tamplate form with a
> <select> using a dtml method as a action:
> 
> <form action="dtml_method">
>  <select name="subject">  
>                <option>Select</option>
>                <option tal:repeat="result here/view_subject" 
>                      value="" tal:attributes="value result/subject"
>                      tal:content="result/subject">data</option>
>                </SELECT>
>  <input type="submit" name="submit" value="submit">
> </form>
> 
> How would I access the value of subject in the dtml_method:
> 
>  <dtml-var subject>
> 
> The above did not work. Any Ideas?

"Did not work" does not help. 
The code is ok, meaning you should see the value
when you actually select something (Note your
first option has no value)

If you are unsure just use something like this:

DTML-Method: <dtml-var REQUEST>
ZPT: <span tal:replace="structure request">Request</span>
Python Script: return context.REQUEST

to render the contents of Request as HTML.

DTML can make trouble if you have other
elements in the namespace somewhere which
have the same name. So the above code
might access a property or another object
with id "subject". Sometimes you see
this when you look at the pages source 
in the browser, since generic display
of objects in python results in something 
like <foobar object at 0x23492889>
Note the < > are similar to HTML tags
so most browsers dont show this. The source
view will make it visible.

Regards
Tino