If you want to perform additional logic when you save your model...
class MyModel(models.Model):
#...
def save(self, *args, **kwargs):
self.a_rel_model_set.add(O)
super(MyModel, self).save(*args, **kwargs)
self.another_rel_model_set.add(O2)
Or similar login in pre_save and post_save signals, since they are
many2many fields, they will be overriden on an admin form, since the
form.save_m2m is called *after* the model save, and whatever changes I do
on those signals, will be wiped out.
The logic I had to put it in log_change (ModelAdmin method). I don't know
whether it is the appropriate method, but is the first method executed
*after* model saving. Is it the appropriate method for that? Admin
post-save logic... or should we have an additional method in the admin for
that?
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