#36530: System check for ManyToManyField & Composite Primary Key checks only one
direction
-------------------------------------+-------------------------------------
Reporter: Jacob Walls | Owner: (none)
Type: Bug | Status: new
Component: Database layer | Version: 5.2
(models, ORM) |
Severity: Release blocker | Resolution:
Keywords: compositeprimarykey | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Changes (by Natalia Bidart):
* cc: Simon Charette (added)
* easy: 1 => 0
* stage: Unreviewed => Accepted
Comment:
Thank you Jacob! How about this for a regression test?
{{{#!python
def test_many_to_many_from_model_with_composite_primary_key(self):
class Parent(models.Model):
name = models.CharField(max_length=20)
class Child(models.Model):
pk = models.CompositePrimaryKey("version", "name")
version = models.IntegerField()
name = models.CharField(max_length=20)
parents = models.ManyToManyField(Parent)
field = Child._meta.get_field("parents")
self.assertEqual(
field.check(from_model=Child),
[
Error(
"Field has a CompositePrimaryKey and defines a
relation with model "
"'Parent' which is not supported.",
obj=field,
id="fields.E348",
),
],
)
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/36530#comment:1>
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