#11437: [soc2009/multidb] M2M Relationship with through=[model] whose primary
key
is renamed fails with wrong column name
---------------------------------------------------+------------------------
Reporter: anonymous | Owner: nobody
Status: closed | Milestone:
Component: Database layer (models, ORM) | Version:
soc2009/multidb
Resolution: invalid | Keywords: multidb
manytomany db_column
Stage: Unreviewed | Has_patch: 0
Needs_docs: 0 | Needs_tests: 0
Needs_better_patch: 0 |
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Changes (by anonymous):
* status: new => closed
* resolution: => invalid
Comment:
I'm sorry, was my fault. I didn't run manage.py validate, which helpfully
let me know:
{{{
Error: One or more models did not validate:
adsales.adsalesadorderlistingbridge: "id": You can't use "id" as a field
name, because each model au
tomatically gets an "id" field if none of the fields have
primary_key=True. You need to either remov
e/rename your "id" field or add primary_key=True to a field.
}}}
I had declared my model like this:
{{{
class AdSalesAdOrderListingBridge(models.Model):
id = models.IntegerField(db_column='ad_order_listing_bridgeId')
}}}
And just forgot to add the keyword argument primary_key=True.
I can only assume that django would parse my model, not find a pk, and
then overwrite my id field definition with the automatic id field (which
of course wouldn't have db_column set, but would have primary_key set)
Thanks for looking at this, even though it was my fault :(
Perhaps a startup run-time model parsing exception (ImproperlyConfigured)
should be generated if django is about to overwrite a field?
--
Ticket URL: <http://code.djangoproject.com/ticket/11437#comment:4>
Django <http://code.djangoproject.com/>
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