I am trying to access the field(s) of a Child table while still inside
the save method of the Parent table.
Assuming that the many-to-many field in the Parent table is called
`m2m_field`, and the field I need to access in the Child table is
called `child_field`, what I have tried is this:
def save_model(self, request, obj, form, change):
# save object and the many-to-many data
obj.save()
# this does not work:
data_I_need = obj.m2m.all()[0].child_field
# nor does this:
data_I_need = Parent.objects.get(pk=obj.pk).m2m.all()[0].child_field
# in fact, length is 0, so no data in the set...
print len(Parent.objects.get(pk=obj.pk).m2m.all())
I know I am not grasping some key aspect of the problem; but I cannot
see what it is, and would appreciate any help with this problem!
Thanks
Derek
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