Re: [Zope] How to set HTTP Headers with TAL?

2 Sep 2002

      On Monday 02 September 2002 06:50, mmartini@web.de wrote:
...
Hi,
does anybody know how to set HTTP headers with TAL (if possible).
I want to do HTTP caching with Apache as explained here:
http://www.zope.org/Members/rbeer/caching .
These the lines in DTML:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<dtml-call "RESPONSE.setHeader('Expires',
_.DateTime(_.DateTime().timeTime() + 3600).toZone('GMT').rfc822())">
<dtml-call "RESPONSE.setHeader('Last-Modified',
bobobase_modification_time().toZone('GMT').rfc822())">
<HTML>
...
Thank you for your help.
Mitja
In TAL:

<span tal:define="nil python:request.RESPONSE.setHeader('Expires', (DateTime() 
+ 1.0/24).toZone('GMT').rfc822());
                  nil python:request.RESPONSE.setHeader('Last-Modified;, 
here.bobobase_modification_time().toZone('GMT').rfc822())" />

But you might consider moving all that into a python script that goes like 
this:

### script setheaders
response = container.REQUEST.RESPONSE

response.setHeader('Expires', (DateTime() + 1.0/24).toZone('GMT').rfc822())

response.setHeader('Last-Modified;, 
context.bobobase_modification_time().toZone('GMT').rfc822()) 
###

Then in your page template you can just say
<span tal:define="nil here/setheaders" />

For some good examples of how to translate various DTML idioms into TAL, see 
http://www.zope.org/Members/peterbe/DTML2ZPT

-- Wade Leftwich
Ithaca, NY US

Wade Leftwich

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