Fixed 10075: Allowed saving of inline-edited models that use multi-table inheritance.

        fk_attname = self.fk.get_attname()

        kwargs = {fk_attname: self.instance.pk}

        new_obj = self.model(**kwargs)

        if fk_attname == self._pk_field.attname:

        if fk_attname == self._pk_field.attname or self._pk_field.auto_created:

            exclude =  [self._pk_field.name]

        else:

            exclude = []

    def __unicode__(self):

        return u'%s: %s' % (self.my_pk, self.title)

class AlternateBook(Book):

    notes = models.CharField(max_length=100)

    def __unicode__(self):

        return u'%s - %s' % (self.title, self.notes)

class AuthorMeeting(models.Model):

    name = models.CharField(max_length=100)

    authors = models.ManyToManyField(Author)

...     print book.title

Les Fleurs du Mal

Test inline formsets where the inline-edited object uses multi-table inheritance, thus 

has a non AutoField yet auto-created primary key.

>>> AuthorBooksFormSet3 = inlineformset_factory(Author, AlternateBook, can_delete=False, extra=1)

>>> formset = AuthorBooksFormSet3(instance=author)

>>> for form in formset.forms:

...     print form.as_p()

<p><label for="id_alternatebook_set-0-title">Title:</label> <input id="id_alternatebook_set-0-title" type="text" name="alternatebook_set-0-title" maxlength="100" /></p>

    <p><label for="id_alternatebook_set-0-notes">Notes:</label> <input id="id_alternatebook_set-0-notes" type="text" name="alternatebook_set-0-notes" maxlength="100" /><input type="hidden" name="alternatebook_set-0-author" value="1" id="id_alternatebook_set-0-author" /><input type="hidden" name="alternatebook_set-0-book_ptr" id="id_alternatebook_set-0-book_ptr" /></p>

>>> data = {

...     'alternatebook_set-TOTAL_FORMS': '1', # the number of forms rendered

...     'alternatebook_set-INITIAL_FORMS': '0', # the number of forms with initial data

...     'alternatebook_set-0-title': 'Flowers of Evil',

...     'alternatebook_set-0-notes': 'English translation of Les Fleurs du Mal'

... }

>>> formset = AuthorBooksFormSet3(data, instance=author)

>>> formset.is_valid()

True

>>> formset.save()

[<AlternateBook: Flowers of Evil - English translation of Les Fleurs du Mal>]

# Test a custom primary key ###################################################

We need to ensure that it is displayed