I've defined a model using a generic foreign key which is basically
exactly like the tagging example provided in the Django docs:
from django.db import models
from django.contrib.contenttypes.models import ContentType
from django.contrib.contenttypes import generic
class WordedItem(models.Model):
word = models.ForeignKey(FoodWord)
content_type = models.ForeignKey(ContentType)
object_id = models.PositiveIntegerField()
content_object = generic.GenericForeignKey('content_type',
'object_id')
def __unicode__(self):
return self.word
However, when I try to create a WordedItem object using the syntax
that I literally copied and pasted from the documentation it fails,
telling me that 'content_object' is not a field. Initially I tried
using get_or_create() which failed in the same way, but that appears
to be a known bug (#6805).
I've tried doing both this:
obj, created = WordedItem.objects.get_or_create(content_object=match,
word=word)
and this:
try:
obj = WordedItem.objects.get(content_object=match, word=word)
except WordedItem.DoesNotExist:
obj = WordedItem(content_object=match, word=word)
obj.save()
num_created += 1
Regardless, I end up with this:
TypeError: Cannot resolve keyword 'content_object' into field. Choices
are: id, word, content_type, object_id
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