[Zope] Nice to have feature.

[Chris Withers]

Have you looked at METAL?

Chris

Edward Ing wrote:
> I place the following feature request into the bug/feature/patch collector,
> but the submission failed.
> Anyways, I would like to have feed back from users here.
> 
> It would be nice if path expressions could be the result of an expansion
> evaluation.
> If you could have a tag expression as follows:
> <span tal:replace="structure ${request/middle_section_template}">middle
> section to be replaced</span>
> where the value of the path request/middle_section_template is the path (and
> hence another level of indirection) this feature would make page layout more
> elegent.
> 
> Right now I can acheive the same "late template binding" via python script.
> But the above feature would be nicer and more elegant.
> For instance if the following code is on my main application template page
> and I had two middle section templates, one for a corporate application form
> and one for an individual application form,  one of which should be merged
> depending on a runtime variable of whether the user is applying for his
> company or for himself:
> I would like to be able to set,
>     REQUEST.middle_section_template="container/CorporateFormPageTemplate",
> or set,
> REQUEST.middle_section_template="container/IndividualFormPageTemplate",
> depending on whether the user is a corporation or and individual.
> And then have the evaluation of the expression
> ${request/middle_section_templage} determine the replacement path.
> This seems like something easy to do, because in the page template string
> expression a similar evaluation is taking place.
> 
> 
> 
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