Re: [Zope] Newbie: Missing a Variable (TAL/METAL Question)

beno - Sat, 29 Jul 2006 10:09:51 -0700

Alexis Rhoda's suggestion sounds similar. I edited the code as follows, both with and without the 'global' parameter with the same error thrown. I read the material you recommended before writing the list and have been referencing it. I confess that snakes would bite me repeatedly though before my eyes for lack of seeing them, no matter how hard I try. Your further help would be very much appreciated. TIA,
beno

<tr tal:repeat="item batch">
   <tal:block define="global number repeat/item/number">
    <td tal:content="number">1</td>
    <td tal:content="item/title">title</td>
    <td><tal:content metal:use-macro="here/?number/macros/author">author</tal:content></td>
    <td><tal:content metal:use-macro="here/?number/macros/content">content</tal:content></td>
    <td tal:content="item/bobobase_modification_time">
      modification date</td>
   </tal:block>
</tr>

3

TypeError

Sorry, a site error occurred.

Traceback (innermost last):

Module ZPublisher.Publish, line 175, in publish_module_standard
Module ZPublisher.Publish, line 132, in publish
Module Zope.App.startup, line 204, in zpublisher_exception_hook
Module ZPublisher.Publish, line 101, in publish
Module ZPublisher.mapply, line 88, in mapply
Module ZPublisher.Publish, line 39, in call_object
Module Shared.DC.Scripts.Bindings, line 306, in __call__
Module Shared.DC.Scripts.Bindings, line 343, in _bindAndExec
Module Products.PageTemplates.ZopePageTemplate, line 222, in _exec
Module Products.PageTemplates.PageTemplate, line 96, in pt_render
<ZopePageTemplate at /rejoice.2012.vi/en-us/Books/getQuote used for /rejoice.2012.vi/en-us/Books/test>
Module TAL.TALInterpreter, line 190, in __call__
Module TAL.TALInterpreter, line 234, in interpret
Module TAL.TALInterpreter, line 613, in do_loop_tal
Module TAL.TALInterpreter, line 234, in interpret
Module TAL.TALInterpreter, line 409, in do_optTag_tal
Module TAL.TALInterpreter, line 394, in do_optTag
Module TAL.TALInterpreter, line 389, in no_tag
Module TAL.TALInterpreter, line 234, in interpret
Module TAL.TALInterpreter, line 657, in do_useMacro

Module Products.PageTemplates.TALES, line 221, in evaluate
URL: /rejoice.2012.vi/en-us/Books/getQuote
Line 22, Column 8
_expression_: standard:'here/?number/macros/author'
Names:

{'container': <Folder instance at e909350>,
 'context': <Folder instance at 92e1ad0>,
 'default': <Products.PageTemplates.TALES.Default instance at 0x8a1d62c>,
 'here': <Folder instance at 92e1ad0>,
 'loop': <SafeMapping instance at 8ff2380>,
 'modules': <Products.PageTemplates.ZRPythonExpr._SecureModuleImporter instance at 0x8a1d06c>,
 'nothing': None,
 'options': {'args': ()},
 'repeat': <SafeMapping instance at 8ff2380>,
 'request': <HTTPRequest, URL=""> 'root': <Application instance at 90c1f80>,
 'template': <ZopePageTemplate at /rejoice.2012.vi/en-us/Books/getQuote used for /rejoice.2012.vi/en-us/Books/test>,
 'traverse_subpath': [],
 'user': Anonymous
 User}

Module Products.PageTemplates.Expressions, line 174, in __call__
Module Products.PageTemplates.Expressions, line 162, in _eval
Module Products.PageTemplates.Expressions, line 107, in _eval

TypeError: iteration over non-sequence (Also, an error occurred while attempting to render the standard error message.)

Dieter Maurer <[EMAIL PROTECTED]> wrote:

beno - wrote at 2006-7-28 15:43 -0700:
> ...
>
>
> tal:content="number">1
> title
> author
> ...
> Traceback
> ...
> Line 22, Column 4
> _expression_: standard:'here/?number/macros/author'
> ...
>KeyError: 'number' (Also, an error occurred while attempting to render the standard error message.)

The traceback tells you (kept part) that the "KeyError: 'number'" comes
from "here/?number/macros/author" and it is right:

Unless you use "global", variables defined in TAL only live
within the element (aka "tag") you have defined them in.

In your special case, this is the "td" element.
It it not defined in the following "td"s.

A common approach is to use artificial "block" elements to
carry the definitions for some elements in the loop body -- similar to

...

...

Apparently, you already use "tal" prefixed tag names.
The "tal:block" is another standard use...

Another advice: carefully read the PageTemplate section in
the Zope Book (2.7 edition, on "plope.org").

--
Dieter

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Re: [Zope] Newbie: Missing a Variable (TAL/METAL Question)

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