On Fri, Jul 20, 2012 at 2:57 PM, dack <d...@ereomega.net> wrote:

> I'm trying to move django data from an sqlite database to a mysql
> database. I know I need to use natural keys, but it's still failing. Any
> ideas?
>
> Here's my procedure. The default database is sqlite, the mysql database is
> called "mysql" in settings.py.
>
> $*./manage.py dumpdata -a -n > data.json*
> $*./manage.py flush --database=mysql*
> You have requested a flush of the database.
> This will IRREVERSIBLY DESTROY all data currently in the 'django' database,
> and return each table to the state it was in after syncdb.
> Are you sure you want to do this?
>
>     Type 'yes' to continue, or 'no' to cancel: yes
>
> You just installed Django's auth system, which means you don't have any
> superusers defined.
> Would you like to create one now? (yes/no): no
> Installed 0 object(s) from 0 fixture(s)
> *Note - if I examine the mysql database at this point, the tables all
> exist and contain 0 rows (as I expected)*
> $*./manage.py loaddata --database=mysql ./data.json*
> Problem installing fixture './data.json': Traceback (most recent call
> last):
>   File
> "/usr/local/lib/python2.6/site-packages/django/core/management/commands/loaddata.py",
> line 196, in handle
>     obj.save(using=using)
>   File
> "/usr/local/lib/python2.6/site-packages/django/core/serializers/base.py",
> line 165, in save
>     models.Model.save_base(self.object, using=using, raw=True)
>   File "/usr/local/lib/python2.6/site-packages/django/db/models/base.py",
> line 565, in save_base
>     created=(not record_exists), raw=raw, using=using)
>   File
> "/usr/local/lib/python2.6/site-packages/django/dispatch/dispatcher.py",
> line 172, in send
>     response = receiver(signal=self, sender=sender, **named)
>   File "/genpool0/db/foo/intranet/../intranet/userprofile/models.py", line
> 22, in create_user_profile
>     UserProfile.objects.create(user=instance)
>

You've got app code running here that is forcing creation of a UserProfile
when the user is loaded. Likely these UserProfile objects are also being
loaded from the fixture, so the attempt to create them is generating the
"user_id" is not unique error.

Karen
-- 
http://tracey.org/kmt/

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