I'm trying to implement a very basic tagging function using generic
relations, and running into errors I don't understand. The basic setup
is, I've got a model called Series, and series should be linkable to
many models via a SeriesItem model. Following the instructions here:
http://www.djangoproject.com/documentation/contenttypes/#reverse-generic-relations
I'm trying to add a reverse generic relation to another model, called
Entry, with the line:
series = generic.GenericRelation(SeriesItem)
When I try to view an Entry object in the admin, it gives me a
KeyError, saying "Could not find Formfield or InlineObjectCollection
named 'series'". I don't really know what this means...
I'm running trunk, and my Series and SeriesItem models are as simple
as can be:
class Series(models.Model):
name = models.CharField(max_length=100)
slug = models.SlugField(prepopulate_from=('name',))
desc = models.TextField("Description", blank=True)
class SeriesItem(models.Model):
series = models.ForeignKey(Series)
content_type = models.ForeignKey(ContentType)
object_id = models.PositiveIntegerField()
content_object = generic.GenericForeignKey('content_type',
'object_id')
Here's my traceback, any help would be appreciated...
Traceback:
File "/Library/Python/2.5/site-packages/django-trunk/django/contrib/
admin/views/main.py" in change_stage
406. return render_change_form(model, manipulator, c,
change=True)
File "/Library/Python/2.5/site-packages/django-trunk/django/contrib/
admin/views/main.py" in render_change_form
205. bound_field_sets = [field_set.bind(context['form'],
original, AdminBoundFieldSet) for field_set in field_sets]
File "/Library/Python/2.5/site-packages/django-trunk/django/contrib/
admin/views/main.py" in __init__
190. self.bound_field_lines =
[field_line.bind(field_mapping, original, AdminBoundFieldLine) for
field_line in field_set]
File "/Library/Python/2.5/site-packages/django-trunk/django/contrib/
admin/views/main.py" in __init__
173. self.bound_fields = [field.bind(field_mapping,
original, AdminBoundField) for field in field_line]
File "/Library/Python/2.5/site-packages/django-trunk/django/db/models/
fields/__init__.py" in bind
387. return bound_field_class(self, fieldmapping, original)
File "/Library/Python/2.5/site-packages/django-trunk/django/contrib/
admin/views/main.py" in __init__
120. self.form_fields = [field_mapping[name] for name in
self.field.get_manipulator_field_names('')]
Exception Type: KeyError at /admin/wblog/entry/78/
Exception Value: "Could not find Formfield or InlineObjectCollection
named 'series'"
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