Re: [Zope3-Users] Seeking Reference Guide on TAL/TALES/METAL
On Friday 31 March 2006 08:49, Jeff Rush wrote:
> whereas I'm trying to get:
>
> X.__getattr__('Y') # X.Y
You can use: X/++attribute++Y. A list of all those traversal namespaces are in
zope.app.traversing/configure.zcml.
Regards,
Stephan
--
Stephan Richter
CBU Physics & Chemistry (B.S.) / Tufts Physics (Ph.D. student)
Web2k - Web Software Design, Development and Training
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Re: [Zope3-Users] Seeking Reference Guide on TAL/TALES/METAL
I think the answer to that question is both, but X['Y'] seem to have
precedents over X.Y.
class MyContainer(OOBTree):
title=u''
class MyContent(Persistent):
title=u''
Adding MyContent in MyContainer you can traverse MyContainer/MyContent/title
or you can traverse MyContainer/title equally well. If I name MyContainer
'title' i get MyContent when I try MyContainer/title.
Sincerely,
Mats
On Fri, 31 Mar 2006 07:49:44 -0600, Jeff Rush wrote
> I've been searching and haven't managed to find the definitive
> reference guide for the particular dialect of TAL/TALES/METAL that
> is bundled with Zope 3. There are various fragmentary and somewhat
> divergent documents around and little about how the particular TALES
> namespaces provided by Zope 3 work in complex cases.
>
> http://www.zope.org/Wikis/DevSite/Projects/ZPT/TAL%20Specification%201.4
>
> http://www.zope.org/Wikis/DevSite/Projects/ZPT/TALES%20Specification%201.3
>
> There are no .txt ReST documents under the TAL and TALES source
> directories, nor anything in the very nice ++APIDOC++ guide.
>
> ---
>
> My specific question is how evaluation of the path expression "X/Z"
> is handled. It *seems* to be:
>
> X.__getitem__('Y')# X['Y']
>
> whereas I'm trying to get:
>
> X.__getattr__('Y')# X.Y
>
> Under Zope 2, as I recall, it would try several algorithms;
> attribute, mapping, sequence. And I'm wondering if that mechanism
> was simplified for Zope 3, and in what way.
>
> -Jeff
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[Zope3-Users] Seeking Reference Guide on TAL/TALES/METAL
I've been searching and haven't managed to find the definitive reference
guide for the particular dialect of TAL/TALES/METAL that is bundled with
Zope 3. There are various fragmentary and somewhat divergent documents
around and little about how the particular TALES namespaces provided by Zope
3 work in complex cases.
http://www.zope.org/Wikis/DevSite/Projects/ZPT/TAL%20Specification%201.4
http://www.zope.org/Wikis/DevSite/Projects/ZPT/TALES%20Specification%201.3
There are no .txt ReST documents under the TAL and TALES source directories,
nor anything in the very nice ++APIDOC++ guide.
---
My specific question is how evaluation of the path expression "X/Z" is
handled. It *seems* to be:
X.__getitem__('Y')# X['Y']
whereas I'm trying to get:
X.__getattr__('Y')# X.Y
Under Zope 2, as I recall, it would try several algorithms; attribute,
mapping, sequence. And I'm wondering if that mechanism was simplified for
Zope 3, and in what way.
-Jeff
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