That's true; but it can quite easily be supported.

On 14/03/2009, Michael Howitz <email address hidden> wrote:
> Public bug reported:
>
> When rendering the following template:
>
> <li class="current"
>      tal:define="subProviderName view/subMenuProviderName">
>   <tal:block condition="subProviderName"
>                   replace="structure provider:${subProviderName}">sub menu
> items</tal:block>
> </li>
>
> I get this exception:
>
>     Traceback (most recent call last):
>       File
> "/Users/mac/Documents/eggs/zope.testing-3.7.1-py2.5.egg/zope/testing/doctest.py",
> line 1356, in __run
>         compileflags, 1) in test.globs
>       ...
>       File
> "/Users/mac/Documents/eggs/zope.publisher-3.5.6-py2.5.egg/zope/publisher/publish.py",
> line 108, in mapply
>         return debug_call(obj, args)
>       File
> "/Users/mac/Documents/eggs/zope.publisher-3.5.6-py2.5.egg/zope/publisher/publish.py",
> line 114, in debug_call
>         return obj(*args)
>       File
> "/Users/mac/Documents/eggs/z3c.pagelet-1.0.2-py2.5.egg/z3c/pagelet/browser.py",
> line 55, in __call__
>         return layout(self)
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/pagetemplate.py",
> line 196, in __call__
>         _ob=_ob, **kwargs)
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/pagetemplate.py",
> line 105, in __call__
>         return bound_pt(**kwargs)
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/pagetemplate.py",
> line 215, in __call__
>         return self.im_func(**kw)
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/pagetemplate.py",
> line 96, in render
>         return self.render(**context)
>       File
> "/Users/mac/Documents/eggs/chameleon.core-1.0b23-py2.5.egg/chameleon/core/template.py",
> line 222, in render
>         return super(TemplateFile, self).render(**kwargs)
>       File
> "/Users/mac/Documents/eggs/chameleon.core-1.0b23-py2.5.egg/chameleon/core/template.py",
> line 112, in render
>         return self.render_template(template, **kwargs)
>       File
> "/Users/mac/Documents/eggs/chameleon.core-1.0b23-py2.5.egg/chameleon/core/template.py",
> line 131, in render_template
>         __template__.source, repr(self), kwargs, sys.exc_info())
>       File
> "/Users/mac/Documents/eggs/chameleon.core-1.0b23-py2.5.egg/chameleon/core/template.py",
> line 128, in render_template
>         return __template__.render(**kwargs)
>       File "/var/folders/SR/SRmqqK4THC0XA5jzpFcGCU+++TM/-Tmp-/tmpcOSOS_",
> line 50, in render
>         _content = _get_content_provider(context, request, view,
> 'main-menu')
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/expressions.py",
> line 39, in __call__
>         return cp.render()
>       File
> "/Users/mac/Documents/eggs/zope.viewlet-3.5.0-py2.5.egg/zope/viewlet/manager.py",
> line 169, in render
>         return u'\n'.join([viewlet.render() for viewlet in self.viewlets])
>       File
> "/Users/mac/Documents/eggs/z3c.menu.ready2go-0.6.0-py2.5.egg/z3c/menu/ready2go/item.py",
> line 122, in render
>         return self.template()
>       File
> "/Users/mac/Documents/eggs/z3c.template-1.2.0-py2.5.egg/z3c/template/template.py",
> line 64, in __call__
>         return self.im_func(im_self, *args, **kw)
>       File
> "/Users/mac/Documents/eggs/z3c.template-1.2.0-py2.5.egg/z3c/template/template.py",
> line 86, in __call__
>         return template(instance, *args, **keywords)
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/pagetemplate.py",
> line 196, in __call__
>         _ob=_ob, **kwargs)
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/pagetemplate.py",
> line 105, in __call__
>         return bound_pt(**kwargs)
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/pagetemplate.py",
> line 215, in __call__
>         return self.im_func(**kw)
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/pagetemplate.py",
> line 96, in render
>         return self.render(**context)
>       File
> "/Users/mac/Documents/eggs/chameleon.core-1.0b23-py2.5.egg/chameleon/core/template.py",
> line 222, in render
>         return super(TemplateFile, self).render(**kwargs)
>       File
> "/Users/mac/Documents/eggs/chameleon.core-1.0b23-py2.5.egg/chameleon/core/template.py",
> line 111, in render
>         template = self.cook_check(parameters=kwargs)
>       File
> "/Users/mac/Documents/eggs/chameleon.core-1.0b23-py2.5.egg/chameleon/core/template.py",
> line 106, in cook_check
>         template = self.cook(parameters=parameters, **kwargs)
>       File
> "/Users/mac/Documents/eggs/chameleon.core-1.0b23-py2.5.egg/chameleon/core/template.py",
> line 198, in cook
>         raise exception
>     RuntimeError: Caught exception rendering template.
>      - Expression: "main-menu"
>      - Instance:   <ViewPageTemplateFile
> /Users/mac/Documents/tmp/icemac.addressbook/src/icemac/addressbook/browser/layout.pt>
>      - Arguments:  template: <ViewPageTemplateFile - at 0x43915d0>
>                    exists: <function evaluate_exists at 0x3211870>
>                    modules: {...} (1977)
>                    nothing: <NoneType - at 0x1076a0>
>                    path: <function evaluate_path at 0x3203bb0>
>                    xincludes: <XIncludes - at 0x4391610>
>                    request: <BrowserRequest - at 0x47013f0>
>                    context: <_Proxy AddressBook at 0x4969a30>
>                    view: <SimplePagelet index.html at 0x4969b90>
>                    options: {...} (2)
>                    target_language: <NoneType - at 0x1076a0>
>
>     SyntaxError: ${subProviderName} is not a valid content provider
> name.
> (/Users/mac/Documents/eggs/z3c.menu.ready2go-0.6.0-py2.5.egg/z3c/menu/ready2go/item.pt)
>
> I seems that a variable provider name expression is not yet supported.
>
> ** Affects: chameleon.core
>      Importance: Undecided
>          Status: New
>
> --
> provider expression does not support variables
> https://bugs.launchpad.net/bugs/342832
> You received this bug notification because you are a member of Chameleon
> Template Engine, which is the registrant for Chamelon Core.
>
> Status in Attribute language template compiler: New
>
> Bug description:
> When rendering the following template:
>
> <li class="current"
>      tal:define="subProviderName view/subMenuProviderName">
>   <tal:block condition="subProviderName"
>                   replace="structure provider:${subProviderName}">sub menu
> items</tal:block>
> </li>
>
> I get this exception:
>
>     Traceback (most recent call last):
>       File
> "/Users/mac/Documents/eggs/zope.testing-3.7.1-py2.5.egg/zope/testing/doctest.py",
> line 1356, in __run
>         compileflags, 1) in test.globs
>       ...
>       File
> "/Users/mac/Documents/eggs/zope.publisher-3.5.6-py2.5.egg/zope/publisher/publish.py",
> line 108, in mapply
>         return debug_call(obj, args)
>       File
> "/Users/mac/Documents/eggs/zope.publisher-3.5.6-py2.5.egg/zope/publisher/publish.py",
> line 114, in debug_call
>         return obj(*args)
>       File
> "/Users/mac/Documents/eggs/z3c.pagelet-1.0.2-py2.5.egg/z3c/pagelet/browser.py",
> line 55, in __call__
>         return layout(self)
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/pagetemplate.py",
> line 196, in __call__
>         _ob=_ob, **kwargs)
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/pagetemplate.py",
> line 105, in __call__
>         return bound_pt(**kwargs)
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/pagetemplate.py",
> line 215, in __call__
>         return self.im_func(**kw)
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/pagetemplate.py",
> line 96, in render
>         return self.render(**context)
>       File
> "/Users/mac/Documents/eggs/chameleon.core-1.0b23-py2.5.egg/chameleon/core/template.py",
> line 222, in render
>         return super(TemplateFile, self).render(**kwargs)
>       File
> "/Users/mac/Documents/eggs/chameleon.core-1.0b23-py2.5.egg/chameleon/core/template.py",
> line 112, in render
>         return self.render_template(template, **kwargs)
>       File
> "/Users/mac/Documents/eggs/chameleon.core-1.0b23-py2.5.egg/chameleon/core/template.py",
> line 131, in render_template
>         __template__.source, repr(self), kwargs, sys.exc_info())
>       File
> "/Users/mac/Documents/eggs/chameleon.core-1.0b23-py2.5.egg/chameleon/core/template.py",
> line 128, in render_template
>         return __template__.render(**kwargs)
>       File "/var/folders/SR/SRmqqK4THC0XA5jzpFcGCU+++TM/-Tmp-/tmpcOSOS_",
> line 50, in render
>         _content = _get_content_provider(context, request, view,
> 'main-menu')
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/expressions.py",
> line 39, in __call__
>         return cp.render()
>       File
> "/Users/mac/Documents/eggs/zope.viewlet-3.5.0-py2.5.egg/zope/viewlet/manager.py",
> line 169, in render
>         return u'\n'.join([viewlet.render() for viewlet in self.viewlets])
>       File
> "/Users/mac/Documents/eggs/z3c.menu.ready2go-0.6.0-py2.5.egg/z3c/menu/ready2go/item.py",
> line 122, in render
>         return self.template()
>       File
> "/Users/mac/Documents/eggs/z3c.template-1.2.0-py2.5.egg/z3c/template/template.py",
> line 64, in __call__
>         return self.im_func(im_self, *args, **kw)
>       File
> "/Users/mac/Documents/eggs/z3c.template-1.2.0-py2.5.egg/z3c/template/template.py",
> line 86, in __call__
>         return template(instance, *args, **keywords)
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/pagetemplate.py",
> line 196, in __call__
>         _ob=_ob, **kwargs)
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/pagetemplate.py",
> line 105, in __call__
>         return bound_pt(**kwargs)
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/pagetemplate.py",
> line 215, in __call__
>         return self.im_func(**kw)
>       File
> "/Users/mac/Documents/eggs/z3c.pt-1.0b12-py2.5.egg/z3c/pt/pagetemplate.py",
> line 96, in render
>         return self.render(**context)
>       File
> "/Users/mac/Documents/eggs/chameleon.core-1.0b23-py2.5.egg/chameleon/core/template.py",
> line 222, in render
>         return super(TemplateFile, self).render(**kwargs)
>       File
> "/Users/mac/Documents/eggs/chameleon.core-1.0b23-py2.5.egg/chameleon/core/template.py",
> line 111, in render
>         template = self.cook_check(parameters=kwargs)
>       File
> "/Users/mac/Documents/eggs/chameleon.core-1.0b23-py2.5.egg/chameleon/core/template.py",
> line 106, in cook_check
>         template = self.cook(parameters=parameters, **kwargs)
>       File
> "/Users/mac/Documents/eggs/chameleon.core-1.0b23-py2.5.egg/chameleon/core/template.py",
> line 198, in cook
>         raise exception
>     RuntimeError: Caught exception rendering template.
>      - Expression: "main-menu"
>      - Instance:   <ViewPageTemplateFile
> /Users/mac/Documents/tmp/icemac.addressbook/src/icemac/addressbook/browser/layout.pt>
>      - Arguments:  template: <ViewPageTemplateFile - at 0x43915d0>
>                    exists: <function evaluate_exists at 0x3211870>
>                    modules: {...} (1977)
>                    nothing: <NoneType - at 0x1076a0>
>                    path: <function evaluate_path at 0x3203bb0>
>                    xincludes: <XIncludes - at 0x4391610>
>                    request: <BrowserRequest - at 0x47013f0>
>                    context: <_Proxy AddressBook at 0x4969a30>
>                    view: <SimplePagelet index.html at 0x4969b90>
>                    options: {...} (2)
>                    target_language: <NoneType - at 0x1076a0>
>
>     SyntaxError: ${subProviderName} is not a valid content provider name.
> (/Users/mac/Documents/eggs/z3c.menu.ready2go-0.6.0-py2.5.egg/z3c/menu/ready2go/item.pt)
>
> I seems that a variable provider name expression is not yet supported.
>


-- 
--=====================--
  mail: <email address hidden>
  homepage: zeitmaschine.dk
--=====================--