[Zope] redirect strangeness ...

[Oliver Bleutgen]

Dennis Allison wrote:
> This dtml fragment fails strangely ---
>    
>    <dtml-var standard_header_html>
>    <dtml-if expr=pythonscript()>
>    	<dtml-call expr="REQUEST['RESPONSE'].redirect('index_html')">
>    <dtml-else>
>    	<dtml-call expr="REQUEST['RESPONSE'].redirect('originalform?'+marshallformvars())">
>    </dtml-if>
>    <dtml-var standard_footer_html>
>    
> The pythonscript() validates the form variables.  marshallformvars()
> is a python script that returns the appropriately quoted name/value pairs.
> 
> The observed behavior is strange.  If the pythonscript() returns 0, the 
> transfer to the originalform occurs along with the diagnostic information 
> inserted by the validation script.  This is the behavior I expect.
> 
> But when the pythonscript() returns 1, I get a Zope error indicating 
> that the sytem cannot find, not index_html but
> 
> 	/aaa/bbb/ccc/ddd/%3A
> 
> Both the index_html and the failing dtml-method are in the folder
> referenced via the path /aaa/bbb/ccc/ddd.
> 
> As a workaround I replaced the first redirect with a <dtml-var index_html>
> but I do wonder why the initial approach failed.  Insight appreciated.

To debug this problem, you might want to use the nice tcpwatch (-> 
google). It acts as a proxy but displays the complete http conversation 
in a window.

Another remark to your redirects, AFAIK the the rfc mandates to redirect 
to complete URLs, not just the relative link. I don't know offhand if 
zope "fixes" you redirect, but I would use something like
absolute_url()+'/index_html' as a target instead.


cheers,
oliver