Django migration failed : the field value was declared with a lazy reference
I am trying to enforce my User's email should be unique. In my app called accounts I have the below models.py where I created a CustomUser. Then the Employeee model below there is a 1:1 relationship to CustomUser.
from django.db import models
from django.conf import settings
from django.contrib.auth.models import AbstractUser
class CustomUser(AbstractUser):
email = models.EmailField(unique=True)
groups = models.ManyToManyField(
'auth.Group',
related_name='customuser_set', # Unique related_name to avoid conflict
blank=True,
help_text='The groups this user belongs to.',
verbose_name='groups',
)
user_permissions = models.ManyToManyField(
'auth.Permission',
related_name='customuser_set', # Unique related_name to avoid conflict
blank=True,
help_text='Specific permissions for this user.',
verbose_name='user permissions',
)
def __str__(self):
return self.username
# Create your models here.
class Employee(models.Model):
user = models.OneToOneField(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
number_work_hour_per_week = models.FloatField(
help_text="Number of working hour per week"
)
work_hour_limit = models.BooleanField(
default=False,
help_text="If true number_work_hour_per_week applies in the time registration",
)
flexible_time_registration = models.BooleanField(
default=True,
help_text="Allow the user to register working hour flexible without preregistered time",
)
def __str__(self):
return self.user.username
In my settings.py I have overwrite the default User to be accounts.CustomUser
AUTH_USER_MODEL = 'accounts.CustomUser'
When I do python manage.py migrate I get the below error stack
dimsum-dk-py3.10jianwu@localhost:~/webapp/HD_website/website$ poetry run python manage.py migrate accounts zero
Operations to perform:
Unapply all migrations: accounts
Traceback (most recent call last):
File "/home/jianwu/webapp/HD_website/website/manage.py", line 22, in <module>
main()
File "/home/jianwu/webapp/HD_website/website/manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/core/management/__init__.py", line 442, in execute_from_command_line
utility.execute()
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/core/management/__init__.py", line 436, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/core/management/base.py", line 413, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/core/management/base.py", line 459, in execute
output = self.handle(*args, **options)
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/core/management/base.py", line 107, in wrapper
res = handle_func(*args, **kwargs)
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/core/management/commands/migrate.py", line 303, in handle
pre_migrate_apps = pre_migrate_state.apps
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/utils/functional.py", line 47, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/db/migrations/state.py", line 565, in apps
return StateApps(self.real_apps, self.models)
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/db/migrations/state.py", line 636, in __init__
raise ValueError("\n".join(error.msg for error in errors))
ValueError: The field accounts.Employee.user was declared with a lazy reference to 'accounts.customuser', but app 'accounts' doesn't provide model 'customuser'.
dimsum-dk-py3.10jianwu@localhost:~/webapp/HD_website/website$ poetry run python manage.py makemigrations
No changes detected
dimsum-dk-py3.10jianwu@localhost:~/webapp/HD_website/website$ poetry run python manage.py migrate
Operations to perform:
Apply all migrations: accounts, admin, auth, catering, contenttypes, emailSubscriber, pos, restaurant, sessions, sites, takeawayWebshop, timeRegistration, webshopCart, webshopCatalog, webshopCustomer
Traceback (most recent call last):
File "/home/jianwu/webapp/HD_website/website/manage.py", line 22, in <module>
main()
File "/home/jianwu/webapp/HD_website/website/manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/core/management/__init__.py", line 442, in execute_from_command_line
utility.execute()
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/core/management/__init__.py", line 436, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/core/management/base.py", line 413, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/core/management/base.py", line 459, in execute
output = self.handle(*args, **options)
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/core/management/base.py", line 107, in wrapper
res = handle_func(*args, **kwargs)
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/core/management/commands/migrate.py", line 303, in handle
pre_migrate_apps = pre_migrate_state.apps
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/utils/functional.py", line 47, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/db/migrations/state.py", line 565, in apps
return StateApps(self.real_apps, self.models)
File "/home/jianwu/.cache/pypoetry/virtualenvs/dimsum-dk-NvCIYZlw-py3.10/lib/python3.10/site-packages/django/db/migrations/state.py", line 636, in __init__
raise ValueError("\n".join(error.msg for error in errors))
ValueError: The field accounts.Employee.user was declared with a lazy reference to 'accounts.customuser', but app 'accounts' doesn't provide model 'customuser'.
I am not sure about this error since in settings.py I am pointing AUTH_USER_MODEL = 'accounts.CustomUser', so how come that the error stack say that I in accounts there is no model customuser (when in fact it should be CustomUser)
In my migrations folder under accounts I have 3 py files
0001_initial.py
import django.db.models.deletion
from django.conf import settings
from django.db import migrations, models
class Migration(migrations.Migration):
initial = True
dependencies = [
migrations.swappable_dependency(settings.AUTH_USER_MODEL),
]
operations = [
migrations.CreateModel(
name="Employee",
fields=[
(
"id",
models.AutoField(
auto_created=True,
primary_key=True,
serialize=False,
verbose_name="ID",
),
),
(
"number_work_hour_per_week",
models.FloatField(help_text="Number of working hour per week"),
),
(
"work_hour_limit",
models.BooleanField(
default=False,
help_text="If true number_work_hour_per_week applies in the time registration",
),
),
(
"flexible_time_registration",
models.BooleanField(
default=True,
help_text="Allow the user to register working hour flexible without preregistered time",
),
),
(
"user",
models.OneToOneField(
on_delete=django.db.models.deletion.CASCADE,
to=settings.AUTH_USER_MODEL,
),
),
],
),
]
0002_customuser.py
# Generated by Django 5.1 on 2024-08-18 16:18
import django.contrib.auth.models
import django.contrib.auth.validators
import django.utils.timezone
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
("accounts", "0001_initial"),
("auth", "0012_alter_user_first_name_max_length"),
]
operations = [
migrations.CreateModel(
name="CustomUser",
fields=[
(
"id",
models.AutoField(
auto_created=True,
primary_key=True,
serialize=False,
verbose_name="ID",
),
),
("password", models.CharField(max_length=128, verbose_name="password")),
(
"last_login",
models.DateTimeField(
blank=True, null=True, verbose_name="last login"
),
),
(
"is_superuser",
models.BooleanField(
default=False,
help_text="Designates that this user has all permissions without explicitly assigning them.",
verbose_name="superuser status",
),
),
(
"username",
models.CharField(
error_messages={
"unique": "A user with that username already exists."
},
help_text="Required. 150 characters or fewer. Letters, digits and @/./+/-/_ only.",
max_length=150,
unique=True,
validators=[
django.contrib.auth.validators.UnicodeUsernameValidator()
],
verbose_name="username",
),
),
(
"first_name",
models.CharField(
blank=True, max_length=150, verbose_name="first name"
),
),
(
"last_name",
models.CharField(
blank=True, max_length=150, verbose_name="last name"
),
),
(
"is_staff",
models.BooleanField(
default=False,
help_text="Designates whether the user can log into this admin site.",
verbose_name="staff status",
),
),
(
"is_active",
models.BooleanField(
default=True,
help_text="Designates whether this user should be treated as active. Unselect this instead of deleting accounts.",
verbose_name="active",
),
),
(
"date_joined",
models.DateTimeField(
default=django.utils.timezone.now, verbose_name="date joined"
),
),
("email", models.EmailField(max_length=254, unique=True)),
(
"groups",
models.ManyToManyField(
blank=True,
help_text="The groups this user belongs to. A user will get all permissions granted to each of their groups.",
related_name="user_set",
related_query_name="user",
to="auth.group",
verbose_name="groups",
),
),
(
"user_permissions",
models.ManyToManyField(
blank=True,
help_text="Specific permissions for this user.",
related_name="user_set",
related_query_name="user",
to="auth.permission",
verbose_name="user permissions",
),
),
],
options={
"verbose_name": "user",
"verbose_name_plural": "users",
"abstract": False,
},
managers=[
("objects", django.contrib.auth.models.UserManager()),
],
),
]
and 0003_alter_customuser_groups_and_more.py
# Generated by Django 5.1 on 2024-08-18 16:37
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
("accounts", "0002_customuser"),
("auth", "0012_alter_user_first_name_max_length"),
]
operations = [
migrations.AlterField(
model_name="customuser",
name="groups",
field=models.ManyToManyField(
blank=True,
help_text="The groups this user belongs to.",
related_name="customuser_set",
to="auth.group",
verbose_name="groups",
),
),
migrations.AlterField(
model_name="customuser",
name="user_permissions",
field=models.ManyToManyField(
blank=True,
help_text="Specific permissions for this user.",
related_name="customuser_set",
to="auth.permission",
verbose_name="user permissions",
),
),
]
I cannot delete my database since the database is in production.