Because of Django CASCADE ON DELETE behavior I want to refuse deletion
of the object with related objects. I overwrote my del method in the
model:
def delete(self):
"Allow only if there are no related objects"
seen_objs = CollectedObjects()
self._collect_sub_objects(seen_objs)
if len(seen_objs.items()) > 1:
raise Exception("This instance has related objects!")
super(MyModel, self).delete()
The manager's delete method does'nt call the object's delete method.
So I have to rewrote the manager's delete method also.
But this is not DRY.
What is the correct solution?
How can I propagate the Exception("The signature has related
objects!") to HTML? Because ugettext_lazy("The signature has related
objects!") does'nt works.
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