#12721: PostgreSQL problem deleting objects with GenericRelation and non-integer
object_id
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Reporter: kmtracey | Owner: carljm
Status: assigned | Milestone:
Component: Uncategorized | Version: SVN
Resolution: | Keywords:
Stage: Unreviewed | Has_patch: 1
Needs_docs: 0 | Needs_tests: 0
Needs_better_patch: 0 |
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Changes (by carljm):
* owner: nobody => carljm
* status: new => assigned
* has_patch: 0 => 1
Comment:
Appears to me that this (unlike #10015) is actually a contenttypes-
specific issue. It only occurs if a field containing a foreign PK for a
relation has a different database column type from the PK field it's
pointing to, and AFAICT GenericRelation is the only case where this can
happen: ForeignKey and ManyToManyField always use the correct column type.
I can't recreate the problem without a GenericRelation involved.
Fix attached that ensures the get_db_prep_value method from the
appropriate field is called for the PKs before the query goes to the
database. All tests pass for me on Postgres (barring unrelated failures
from #12692 and #12724).
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Ticket URL: <http://code.djangoproject.com/ticket/12721#comment:2>
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