[Zope-Moz] Templates anyone?

[Martijn Pieters]

From: Shalabh Chaturvedi [mailto:shalabh@pspl.co.in]
> > It just is a callable object, that gets fed a attribute named
> > component-contents with the dtml code in within the block in it.
> 
> I feel this might not be enough. There should not be just _one_
> component_contents but it should be possible to pass any 
> number of parameters
> to the template. Like so:
> 
> <dtml-component   template="table_filled_with_results"
>                               query="mySQLMeth"
>                               columns2use="Name, Age"
>                               tableAttributes=" width=100% "
> >
> 
> 
> And the template 'table_filled_with_results' is defined as:
> 
> <table (tableAttributes) >
> 
>     <tr>
>      (for each columnName in columns2use)
>        <th>  [columnName]
>      (end for)
> 
>   <dtml-in [query]>
>     (for each columnName in columns2use)
>      <tr> <td> <dtml-var [columnName]>
>     (end for)
>   </dtml-in>
> 
> </table>
> 
> How this _could_ work is as follows:
> 
> The template 'table_filled_with_results' gets evaluated 
> _once_ when the the
> document containing <dtml-component> is saved. This would 
> produce the following
> DTML:
> 
> <table width=100%>
>     <tr>
>        <th>  Name
>        <th>  Age
>   <dtml-in mySQLMeth>
>      <tr> <td> <dtml-var Name>
>              <td> <dtml-var Age>
>   </dtml-in>
> </table>
> 
> This is exactly what we want to use. During publishing, this 
> DTML would be
> evaluated as if it was included with a simple <dtml-var> instead of
> <dtml-component>.
> Also note that the above template cannot be defined in plain 
> dtml. It would
> need
> special syntax since it itself is 'producing' DTML which 
> later gets evaluated
> at
> publish time.

But you can no longer make any changes to the component source then,
unless you hunt down all the DTML methods it is used in and re-parse
those as well! Not very elegant I'd say.

No, the component should be any callable Zope object. That way you keep
it OO and reusable.

-- 
Martijn Pieters, Software Engineer 
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