django-stubs: Could not resolve manager type for "core.models.FooModel.objects" [django-manager-missing]

Bug report

I’ve updated django-stubs-ext from 0.4.0 to 0.5.0 and got a lof of error messages from mypy. Before, mypy didn’t complain

There might actually be nothing wrong with django-stubs, but maybe I need to add a type annotation. The problem is that I have no idea what I need to change.

The code has many unit tests. It’s very unlikely that all of those locations mypy now complains about actually have issues that would prevent proper code execution.

What’s wrong

mypy shows several django-manager-missing errors.

How is that should be

No mypy errors shown

System information

OS: Ubuntu
python version: 3.8
django version: 3.2
mypy version: 0.942
django-stubs version: 1.12.0
django-stubs-ext version: 0.5.0

About this issue

Original URL
State: open
Created 2 years ago
Reactions: 16
Comments: 18 (8 by maintainers)

Commits related to this issue

FIX: Mypy Errors due to Django Money Django money causes django-manager-missing error in mypy. Issue is here - https://github.com/typeddjango/django-stubs/issues/1023 — committed to emoss08/Trenova by emoss08 a year ago
MONTA-T-39 (#68) * CHANGE: Settings to include audit log. * CHANGE: Create system user command - Remove multiple stdout - Add tests for command * ADD: Celery Tasks for clearing audit logs Add - C... — committed to emoss08/Trenova by emoss08 a year ago

Most upvoted comments

Our case is something like

class UUIDPrimaryKeyAbstractModel(models.Model):
    id = models.UUIDField(primary_key=True, unique=True, default=uuid.uuid4, editable=False)

    class Meta:
        abstract = True


class Foo(UUIDPrimaryKeyAbstractModel):
    pass


class Bar(UUIDPrimaryKeyAbstractModel):
    foo = models.ForeignKey(Foo, on_delete=models.CASCADE)

No django-money.

+15

rr- on Jul 4, 2022

Then it’s definitely related to https://github.com/typeddjango/django-stubs/pull/993#issuecomment-1155151881 and django-money not exporting types.

I’m afraid it’s not much to do other than ignoring the error until django-money starts to export types. At least as far as I’m aware

flaeppe on Jun 27, 2022

Having the same issue as @mschoettle , using django-modeltranslation and getting the django-manager-missing error

HitLuca on Mar 10, 2023

I am running into this problem when using django-modeltranslation.

type(Model.objects) returns <class 'modeltranslation.manager.MultilingualManager'>.

Is there any workaround that I could do or is this something that would need to be fixed within django-modeltranslation?

mschoettle on Dec 29, 2022

Same issue with django-modeltrans. Ive opened an issue there but I just found this one.

In case it helps, I’ve got a minimal project reproducing the issue with that library: https://github.com/browniebroke/modeltrans-mypy-bug

browniebroke on Apr 17, 2023

Hi, I’m also using django-money==3.0.0 and I bump into the same problem. It actually blocks me from updating not only the django-stubs version but the mypy one as well.

Is there any temporary workaround?

martin056 on Jul 12, 2022