Generally: I have possibly wrong data in the data base. But i think
django does not help, to find these wrong data.
I made "django-admin dumpdata" and i got this error:
"""
Unable to serialize database: ContentType matching query does not exist.
"""
I can set "--verbosity=2", but i get no more information :(
I examined and make a small test app... conclusion: It does not have to
do anything with the serialize process!
The error comes if I access the model object:
-------------------------------------------------------------------
from django.db.models import get_apps, get_models
for app in get_apps():
for model in get_models(app):
model_objects = model.objects.all()
print "test:", model_objects
-------------------------------------------------------------------
tree print lines appears. The the error:
-------------------------------------------------------------------
Traceback (most recent call last):
File "W:\SVN\SVN PyLucid\branches\0.8(django)\test2.py", line 14, in ?
print "test:", model_objects
File "./django/db/models/query.py", line 102, in __repr__
File "./django/db/models/base.py", line 81, in __repr__
File "./django/contrib/auth/models.py", line 48, in __str__
File "./django/db/models/fields/related.py", line 171, in __get__
File "./django/db/models/manager.py", line 73, in get
File "./django/db/models/query.py", line 250, in get
django.db.models.base.DoesNotExist: ContentType matching query does not
exist.
-------------------------------------------------------------------
What am I to do, now?
Russell Keith-Magee schrieb:
> Ok; the error you reported previously (app_label, model not unique) is
> being caused when deserializing the contenttype model in the
> contenttypes application. This model requires that the fields
> app_label and model are a unique pair. The error will be generated
> either because:
>
> 1) your data file contains a duplicate entry, or
IMHO, that cannot happen actually. I create the fixture file with django
and not write it by hand ;)
> 2) you aren't flushing the existing data before inserting the new
> data, so when you deserialize, you are duplicating data in the
> database.
I make only this:
-------------------------------------------------------------------
objects = serializers.deserialize(format, fixture)
for object in objects:
object.save()
-------------------------------------------------------------------
Do I have to delete first the tables? But that cannot be also. I deleted
the SQLite file. Thus no data are present.
the complete routines are here:
http://pylucid.net/trac/browser/branches/0.8%28django%29/PyLucid/install/install.py
--
Mfg.
Jens Diemer
----
CMS in pure Python CGI: http://www.pylucid.org
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