The following code was working in python 3.10 but not in 3.11 due to a change in the enum module.

Now the app won’t launch with the following error message :

  File "/home/runner/work/e/e/certification/models.py", line 3, in <module>
    from .certifications.models import Certification, QuizzCertification  # noqa: F401
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/work/e/e/certification/certifications/models.py", line 17, in <module>
    class CertificationType(models.TextChoices):
  File "/opt/hostedtoolcache/Python/3.11.2/x64/lib/python3.11/site-packages/django/db/models/enums.py", line 49, in __new__
    cls = super().__new__(metacls, classname, bases, classdict, **kwds)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.2/x64/lib/python3.11/enum.py", line 560, in __new__
    raise exc
  File "/opt/hostedtoolcache/Python/3.11.2/x64/lib/python3.11/enum.py", line 259, in __set_name__
    enum_member = enum_class._new_member_(enum_class, *args)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.2/x64/lib/python3.11/enum.py", line 1278, in __new__
    raise TypeError('%r is not a string' % (values[0], ))
TypeError: <class 'certification.certifications.models.QuizzCertification'> is not a string

How would you implement a model field with choices, where the first element is a Model class?

class QuizzCertification(models.Model):
    ...

class OtherCertification(models.Model):
   ...

class CertificationType(models.TextChoices):
    QUIZZ = QuizzCertification, "Quizz"
    OTHER = OtherCertification, "Other"

class Certification(models.Model):
    name = models.CharField(max_length=100, unique=True)
    description = models.TextField(_("Description"), blank=True, null=True)

    type_of = models.CharField(
        _("Type of certification"),
        max_length=100,
        choices=CertificationType,
        default=CertificationType.QUIZZ,
    )