#17875: ForeignKey field and Multiple database bug
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Reporter: | Owner: nobody
vital.fadeev@… | Status: new
Type: Bug | Version: 1.2
Component: Uncategorized | Keywords: ForeignKey, multiple database
Severity: Normal | Has patch: 1
Triage Stage: Unreviewed | UI/UX: 0
Easy pickings: 0 |
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Hello.
== Problem: ==
I get error "Incorrect table name" when I save entry.
== Details: ==
I have two models:
{{{
# db1
class User(models.Model):
id = models.PositiveIntegerField(primary_key=True)
# db2
class Realtor(models.Model):
realtor_id = ForeignKey(User)
}}}
where 'User' in using 'db1' and 'Realtor' using 'db2' (via router).[[BR]]
I get error while save. [[BR]]
When trace I see variables who using '''db2'''. [[BR]]
And SQL-requests going to '''db2'''.[[BR]]
[[BR]]
I.e. SQL-requests runned on Realtor's database - 'db2'[[BR]]
(in db2 no table 'User' and I get 'Incorrect table name' error)[[BR]
[[BR]]
== Solution: ==
(Please, say me right I or no)[[BR]]
ForeignKey field in '''validate()''' function using database from field
instance class. [[BR]]
But need using from related class.[[BR]]
{{{
using = router.db_for_read(model_instance.__class__,
instance=model_instance)
}}}
[[BR]]
(please, see attachment - patch)
I see it in 1.2, 1.3, 1.4rc1.
--
Ticket URL: <https://code.djangoproject.com/ticket/17875>
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