#34015: "Related Field got invalid lookup: startswith" on CharField ForeignKey
-------------------------------------+-------------------------------------
Reporter: Thomas | Owner: nobody
Type: New feature | Status: new
Component: Database layer | Version: 4.1
(models, ORM) |
Severity: Normal | Resolution:
Keywords: ORM lookup | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Changes (by Mariusz Felisiak):
* type: Bug => New feature
Comment:
Thanks for the report. Django 4.2
(cd1afd553f9c175ebccfc0f50e72b43b9604bd97) allows
[https://docs.djangoproject.com/en/dev/ref/models/lookups/#django.db.models.lookups.RegisterLookupMixin.register_lookup
registering lookups per field instances], so you will be able to register
`__startswith` for `parent_object_id`, e.g.
{{{#!python
parent_field = Child._meta.get_field("parent_object_id")
with register_lookup(parent_field, StartsWith):
Child.objects.filter(parent_object_id__startswith='c')
}}}
Duplicate of #29799.
--
Ticket URL: <https://code.djangoproject.com/ticket/34015#comment:3>
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