id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
30006	Wrong UUID serialization in inline admin when used as a 1to1Field primary key of a UUID primary key.	George Cheng	nobody	"Sorry for the confusing title, I create a reproducing [https://github.com/Gerhut/django-inline-admin-bug repo] on GitHub.

Key code as follows:

models.py


{{{
class Room(models.Model):
    id = models.UUIDField(default=uuid4, primary_key=True, editable=False)
    name = models.TextField()

    def __str__(self):
        return self.name


class Teacher(models.Model):
    room = models.OneToOneField(Room, on_delete=models.CASCADE,
                                primary_key=True)
    name = models.TextField()

    def __str__(self):
        return self.name


class Student(models.Model):
    id = models.UUIDField(default=uuid4, primary_key=True, editable=False)
    teacher = models.ForeignKey(Teacher, on_delete=models.CASCADE)
    name = models.TextField()

    def __str__(self):
        return self.name
}}}

admin.py
{{{
from .models import Room, Teacher, Student


@admin.register(Room)
class RoomAdmin(admin.ModelAdmin):
    pass


@admin.register(Teacher)
class TeacherAdmin(admin.ModelAdmin):
    class StudentInline(admin.TabularInline):
        model = Student

    inlines = [StudentInline]
}}}"	Bug	closed	Database layer (models, ORM)	2.1	Normal	duplicate			Unreviewed	0	0	0	0	0	0