def ret(self, cat, *a, **kw):
if not cat and self.current_category:
cat = self.current_category
return fn(self, cat, *a, **kw)
elif cat and Category.exists(cat):
cat = Category.get(cat)
return fn(self, cat, *a, **kw)
elif cat and not Category.exists(cat):
print "category %s not found. try 'categories'?" % cat
else:
print "must specify a category. try 'categories'?"
