On Nov 30, 4:48 pm, "Tane Piper" <[EMAIL PROTECTED]>
wrote:
> As you can see in the Branch model, there is a field called num_leafs
> - I've been reading the signals documentation and had a look on the
> web, but I'm still having difficulty getting my head around it.  What
> I want to do is when a leaf is saved, on the post_save signal I want
> to increment the parent branch's num_leafs field so it contains total
> number of content leafs for that branch (as a counter cache).

This exact example was covered in the Advanced Django Tutorial at
OSCON this year (in the unit testing section) - you may find the
slides from the tutorial useful:

http://toys.jacobian.org/presentations/2007/oscon/tutorial/

Cheers,

Simon
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