[Zope3-dev] Re:

Tue Nov 9 16:39:31 EST 2004

Tonico Strasser wrote:
> Jim Fulton wrote:
> 
>> For me, the scope is broader than that.  Uptimately, the goal is to
>> produce pages that end users see.  I see composition at various levels.
>> For example, I'm *finally* understanding how poorly our page-macro
>> system works.  When a developer defines a page as a view of some
>> object, they shouldn't have to say how the page is wrapped with the
>> site look and feel. That should be the concern of someone else.
>> There should be a mechanism for "composing" these pages with the site
>> look at feel.
> 
> 
> Thinking in page templates I would try to solve it this way:

I assume by "it" you mean the problem of making individual pages
responsible for providing the layout.

> pt_1: The layout
> ---
> <layout metal:define-macro="layout">
>   <main>
>     <wrapper>
>       <page_header metal:define-slot="page_header"/>
>       <wrapper>
>         <content metal:define-slot="content"/>
>       </wrapper>
>     </wrapper>
>     <page_footer metal:define-slot="page_footer"/>
>   </main>
> </layout>
> ---
> 
> pt_2: The main template
> ---
> <page metal:define-macro="page">
>   <metadata/>
>   <body>
>      <layout metal:use-macro="here/pt_1/macros/layout">
>        <page_header metal:fill-slot="page_header">Header</page_header>
>        <content metal:fill-slot="content">Content</content>
>        <page_footer metal:fill-slot="page_footer">Header</page_footer>
>      </layout>
>   </body>
> </page>
> ---
> 
> This way, I can switch to a different layout by using a different layout 
> macro (and stylesheet).
> 
> This is a silly example, but I hope you get the idea.

Nope, not at all.  Regardless of how you implement the layout,
the individual pages have to invoke the main template some how.  I think
there are a number of problems with that.  I don't think the solution lies
in more macros.

Jim

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