Maybe somebody has a simple solution for the following problem with TG
controllers.

I have two methods in the same controller like that:

    @expose()
    def page(self, nr=0):
      ...

    @expose()
    def sibling(self):
       ...

Now I want to generate a *relative* link from "page" to "sibling". The
problem is that if page was called like "page?nr=3", then the link would
be just "sibling", but when page was called as "page/3", then link
should be "../sibling".

So what I need is a relative link to the respective controller, which is
'../' times the number of positional arguments.

Is there an easy way to determine that number?

Of course I could

   def page(self, *args):
       nr = args and args[0] or 0
       base_url = '../'*len(args)

but that's ugly and I loose the possibility to pass the nr parameter as
part of the query string.

Another possibility is to always work with absolute paths, but I prefer
using relative paths as much as possible, and this allows me to put the
controller anywhere in the hierarchy.

-- Chris

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