[Zope] TAL: Replacing an attribute in a macro call

[David Chandek-Stark]

You can define a variable before calling the macro:

<div tal:define="select_name string:foo">
   <div metal:use-macro="macro_path">
     [select_name value is 'foo']
   </div>
</div>

<div tal:define="select_name string:bar">
   <div metal:use-macro="macro_path">
     [select_name value is 'bar']
   </div>
</div>

Macro:

<div metal:define-macro="user>
   <select tal:attributes="name select_name">

   </select>
</div>

Of course, you'll probably want to do some condition/error checking ...

--David

Mark Roach wrote:
> I have a macro defined for a "select" item that I now would like to put
> twice in my page. This means I need to have to different names for the
> items, but I can't seem to figure out how to change an attribute while
> calling a macro. My macro definition looks like this:
> 
> <select metal:define-macro="user" name="user" tal:define="items python:container.function()">
>   <div tal:repeat="option items" tal:omit-tag="">
>       <option tal:content="option/data">Call Type</option>
>   </div>
> </select>
> 
> What I had hoped I could do is use the macro like this:
> 
> <select metal:use-macro="container/selects/macros/user" name="somethingelse">
>  ...
> </select>
> 
> but this doesn't work as the macro overwrites that attribute with its
> own (which makes sense). I have tried leaving the name undefined in the
> macro, but it then renders without a name.
> 
> What is the "correct", or at least idiomatic way to do this?
> 
> Thanks,
> 
> Mark Roach
> 
> 
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-- 
David Chandek-Stark
Web Applications Developer
Duke University - Perkins Library
(919) 660-5859
dc at duke.edu