Dragos Chirila schrieb:
Hi everybody,
I am stuck with the following problem. I would appreciate it very much if you could help me with it.
[snip] If I understand correctly you want to fill a slot if a condition is true else leave the default. A typical "slot-modell" looks something like this: Template I: <a metal:define-macro="A"> <b metal:define-slot="B"> default </b> </a> Template II: <a metal:use-macro="here/TemplateI/macros/A"> <b metal:fill-slot="B"> custom </b> </a> A different approach, a "use-macro-modell": Template I: <a metal:define-macro="A" tal:define="macros here/getmacros"> <b metal:use-macro="macros/B"/> </a> Python Script getmacros: macros = {} # default_macros, custom_macros are page templates. macros.update(container.default_macros.macros) if blah: macros.update(container.custom_macros.macros) return macros This is oversimplified, but I hope it helps you to find a solution. Regards, Tonico