[Zope3-dev] ZPT TTW Metal use-macro evaluation....

Mon Nov 8 14:32:32 EST 2004

Craig Ewington wrote:
...
> I have a question regarding Zope Page Templates:
> 
>  From the browser (i.e. TTW) I created a ZPT page and entered the 
> following source definition:
> 
> <html metal:use-macro="views/standard_macros/page">
> <div metal:fill-slot="body">
> Test Content
> </div>
> </html>
> 
> 
> With 'expand macros' checked I get a warning that the macro expansion 
> fails as follows...
> 
> <!-- Page Template Diagnostics
>  Macro expansion failed
>  exceptions.KeyError: 'views'
> -->
> 
> After poking around the Zope3-dev list for a bit, I changed the source 
> definition to:
> 
> 
> <html metal:use-macro="context/standard_macros/page">
> <div metal:fill-slot="body">
> Test Content
> </div>
> </html>
> 
> I get a similar error message:
> 
> <!-- Page Template Diagnostics
>  Macro expansion failed
>  exceptions.KeyError: 'context'
> -->
> 
> 
> I had presumed that I was able to enter METAL statements into a TTW  ZPT 
> page - perhaps this is not correct?  Does anyone understand how to make 
> this work?  I'm using the final release version of Zope3, checked out 
> from svn this morning.

As you found out, "views" is deprecated.

I was going to say:

   As Stephan almost pointed out, 'context' is only available for views.
   It can be used in either file-system-based views or TTW views.  If you are
   creating ZPT Pages in content folders, context is unavailable.

But that isn't true.  "context" is stil available.  It is a alias for
"container". I would have said that it would be depricated, but I'm
not sure it should be.  For example, the Rotterdam skin depends on it.

Anyway, you should be able to use:

   <html metal:use-macro="container/@@standard_macros/page">

or

   <html metal:use-macro="context/@@standard_macros/page">

But that doesn't work either due to a bug in the Rotterdam skin.
The main template for the Rotterdam skin only works with trusted
ZPT code.  This could and should be fixed.  :(

The ZopeTop skin has the same problem. Dang.  I guess we need to
test the skins with TTW templates. Anybody wanna work on this?

Jim

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