[Zope] dtml-tree with data from multiple tables

[Rik Hoekstra]

>I'd like to generate a tree with data from different
>SQL tables depending on the tree level. In other
>words, the first level data  comes from one table,
>second level comes from another.
>
>How can the branches_expr expression determine what
>the current tree  level is? Can I pass a parameter to
>let me know the current level? I tried the following,
>but it didn't work...
>
>  <dtml-tree id=name
>branches_expr="child_lookup(_['tree-level'])">


I think Anthony baxter's "Some neat tricks with dtml-tree" <url:
http://www.zope.org/Members/anthony/tree-coding-tricks > will help you out

Rik