I've spent hours, maybe days, being confused about this as well. According to the Zope API documentation and ZDP at http://zdp.zope.org/projects/zfaq/faq/DTML/959888072 http://zdp.zope.org/projects/zsnippet/snippets/DTMLTags/CallingDTMLMetho ds someDTMLMethod(_.None, _) should work. Because of the unclear/complex calling conventions and integration between DTML and Python I've had to keep some code in DTML. Other related questions are: How do you do dtml-with and dtml-let in a Python script? (I.e. put something on the namespace) How do you give positional (not keyword) arguments to a DTML method; is there any difference? When is __call__ called, when is __str__ called, and when is index_html called? Other basic functions worth knowing about for a class/object to be a good-behaving Zope object? When does RESPONSE need to be passed; it can always be gotten from the REQUEST, right? Calling a DTML method, when to use client and when to use REQUEST? Is calling with client and REQUEST the same as adding client to the namespace (REQUEST) and calling it with an client=None? Are namespace, _, REQUEST, and context just different names for the same thing? I've been dreaming about a FAQ answering all of this (and a bunch of ZClasses questions I have). Me thinks the ZDP should be integrated with Zope.org, and all Zope.org members given access to add FAQs (I am not allowed to add FAQs now). Ideally, somebody should be adding FAQs all the time, and the FAQ index should be posted regularly to zope-dev... Btw, I think http://zdp.zope.org/projects/zfaq/faq/DTML/959888072 gets the order of aMappingObject and aClient wrong in the first code line. Bye, -- Bjorn -----Original Message----- From: Tim Hicks [mailto:tim@sitefusion.co.uk] Posted At: Thursday, June 14, 2001 00:15 Posted To: Zope List Conversation: [Zope] How to make a script return rendered dtml Subject: Re: [Zope] How to make a script return rendered dtml ----- Original Message ----- From: "Eric Balasbas" <ebalasba@bway.net> To: "Tim Hicks" <tim@sitefusion.co.uk> Cc: <zope@zope.org> Sent: Wednesday, June 13, 2001 4:33 PM Subject: Re: [Zope] How to make a script return rendered dtml
I'm not sure if this is the best way to do it, but if you want to render a DTML method or DTML document inside a Python script, use the syntax:
someDTMLMethod(_.None, _)
I tried this: print context(_.None, _) and got this error: Error Type: NameError Error Value: _ So I tried context.id(_.None,_) and got the same. So I tried 'print context(None,_)', with the same error resulting. Finally, I have tried: print context(None,) and got Error Type: KeyError Error Value: standard_html_header This last error at least seems like it's on the right track as it is parsing through the text of the file. What's going wrong, any idea? thanks tim
Eric Balasbas Senior Developer eric@virtosi.com
http://www.virtosi.com/ Virtosi Ltd. Design -- Branding -- Zope
On Wed, 13 Jun 2001, Tim Hicks wrote:
I have a ZClass (testclass) which subclasses DTMLDocument, and within this zclass, I have a script (python) called index_html. Obviously, this script is called each time an instance of testclass is requested. Based on the presence of a query string, I want to either return the document_src (although with a few modifications), or simply return the rendered instance... by this, I mean have all the dtml tags that are in the instance evaluated. So, my question is, how do I make Zope evaluate the dtml tags?
Here is what I have so far in my script:
------------ if context.REQUEST.QUERY_STRING == 'editor': print context.raw else: print context
return printed ------------
The 'else' statement simply gives me things like,
<dtml-var standard_html_header>
I also tried 'else: render(context)', which was simply a guess on my part, but I get a Zope error as follows:
Error Type: AttributeError Error Value: validate
Can anyone enlighten me?
Cheers
tim