Re: loaddata not looking for natural keys

Ok, now I am really confused.

Here's the code where the error originates in django/core/serializers/python.py:

           # Handle FK fields

            elif field.rel and isinstance(field.rel, models.ManyToOneRel):

                if field_value is not None:

                    import pdb; pdb.set_trace()

                    if hasattr(field.rel.to._default_manager, 'get_by_natural_key'):

                        if hasattr(field_value, '__iter__'):

                            obj = field.rel.to._default_manager.db_manager(db).get_by_natural_key(*field_value)

                            value = getattr(obj, field.rel.field_name)

                            # If this is a natural foreign key to an object that

                            # has a FK/O2O as the foreign key, use the FK value

                            if field.rel.to._meta.pk.rel:

                                value = value.pk

                        else:

                            value = field.rel.to._meta.get_field(field.rel.field_name).to_python(field_value)

                        data[field.attname] = value

                    else:

                        data[field.attname] = field.rel.to._meta.get_field(field.rel.field_name).to_python(field_value)

                else:

                    data[field.attname] = None

Here's what pdb says:

(Pdb) p field

<django.db.models.fields.related.ForeignKey: event_type>

(Pdb) p field_value

u'Cash Contribution'

(Pdb) p hasattr(field.rel.to._default_manager, 'get_by_natural_key')

True

(Pdb) n

> /home/bob/.virtualenvs/vn2/lib/python2.6/site-packages/django/core/serializers/python.py(109)Deserializer()

-> if hasattr(field_value, '__iter__'):

(Pdb) p hasattr(field_value, '__iter__')

False

(Pdb) p field_value

u'Cash Contribution'

(Pdb) p type(field_value)

<type 'unicode'>

(Pdb) n

> /home/bob/.virtualenvs/vn2/lib/python2.6/site-packages/django/core/serializers/python.py(117)Deserializer()

-> value = field.rel.to._meta.get_field(field.rel.field_name).to_python(field_value)

(Pdb) n

ValidationError: Validati...teger."])

> /home/bob/.virtualenvs/vn2/lib/python2.6/site-packages/django/core/serializers/python.py(117)Deserializer()

-> value = field.rel.to._meta.get_field(field.rel.field_name).to_python(field_value)

I thought unicode fields had iterators? But here's one in ipython:

In [15]: field_value = u'Cash Contribution'

In [16]: field_value.__iter__()

---------------------------------------------------------------------------

AttributeError                            Traceback (most recent call last)

/home/bob/.virtualenvs/vn2/valuenetwork/<ipython console> in <module>()

AttributeError: 'unicode' object has no attribute '__iter__'

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