[Zope-dev] ZPatterns Design Issue

[Roch'e Compaan]

I generally follow this approach for long lists and reports, but the tree
tag is a bit more tricky because you only have a simple "data" object
without the context that a real object provides.  A real object makes it =
a
lot simpler if you recursively draw a hierarchy - doing it with simple
"data" objects requires some thinking but thanks for pointing me in the
right direction.

Roch=E9

> Just return the result directly.  If the data is all from SQL, that's a=
ll
> you need to do.  The catch is that you may have to structure your ZClas=
s
> differently to allow it to be returned from an SQL method.
>
> The simplest thing, though, is to define your application API's so that
> methods which must return multiple objects in this fashion are returnin=
g
> sequences of simple "data" objects which do not provide the full
> semantics
> of the real objects.  In essence, define the API as returning "reportin=
g
> data" rather than objects.  This is similar to the ZCatalog
> approach which
> returns dumb record objects, but can optionally retrieve the real
> object if
> needed.  It is generally the best approach for report-like
> situations (such
> as use of the tree tag).
>