auth.User.groups: (fields.E304) Reverse accessor for 'User.groups' clashes with reverse accessor for 'UserManage.groups'

Question

In my Django project I have a user_manage app.

I create a model named UserManage in my user_manage app’s model.py:

from django.db import models
from django.contrib.auth.models import AbstractUser

class UserManage(AbstractUser):
    username = models.CharField(max_length=12)

Then I run:

$ python3 manage.py makemigrations

There comes the error:

ERRORS:
auth.User.groups: (fields.E304) Reverse accessor for 'User.groups' clashes with reverse accessor for 'UserManage.groups'.
        HINT: Add or change a related_name argument to the definition for 'User.groups' or 'UserManage.groups'.
auth.User.user_permissions: (fields.E304) Reverse accessor for 'User.user_permissions' clashes with reverse accessor for 'UserManage.user_permissions'.
        HINT: Add or change a related_name argument to the definition for 'User.user_permissions' or 'UserManage.user_permissions'.
users_management.UserManage.groups: (fields.E304) Reverse accessor for 'UserManage.groups' clashes with reverse accessor for 'User.groups'.
        HINT: Add or change a related_name argument to the definition for 'UserManage.groups' or 'User.groups'.
users_management.UserManage.user_permissions: (fields.E304) Reverse accessor for 'UserManage.user_permissions' clashes with reverse accessor for 'User.user_permissions'.
        HINT: Add or change a related_name argument to the definition for 'UserManage.user_permissions' or 'User.user_permissions'.

Asked By: aircraft

||

Source

Answer 1

Add the following to settings.py:

AUTH_USER_MODEL = "users_management.UserManage"

More generally,

AUTH_USER_MODEL = 'YourAppName.YourClassName'

YourAppName: This is the name of the app that will have the User Model
YourClassName: This is the name of the class used inside the models.py file

Answered By: aircraft

Answer 2

Add this in the settings :

AUTH_USER_MODEL = 'APPNAME.User'

This way we are telling Django to use our custom model instead the default one.
https://docs.djangoproject.com/en/2.2/topics/auth/customizing/#substituting-a-custom-user-model

Answered By: AjayShelar

Answer 3

Just add AUTH_USER_MODEL="your app name.User" in settings.py as shown in the code below

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}
AUTH_USER_MODEL="myproject.User"
    
# Password validation
# https://docs.djangoproject.com/en/2.2/ref/settings/#auth-password-validators
    
AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]

Answered By: Tanuja Joshi

Answer 4

Add this in the settings at the end of the code :

AUTH_USER_MODEL="users.CustomUser"

Answered By: Arnab Das

Answer 5

Add this setting.py
AUTH_USER_MODEL = "myapp.User"

Answered By: Ravindrakumara

Answer 6

I have added AUTH_USER_MODEL = 'YourAppName.YourClassName' to setting but still had an other error during on python manage.py migrate

Traceback (most recent call last):
  File "D:Perso WorkMr CYRILEPUSH NOTIFICATION MOBILE AP.envlibsite-packagesdjangocoremanagementbase.py", line 398, 
in execute
    output = self.handle(*args, **options)
  File "D:Perso WorkMr CYRILEPUSH NOTIFICATION MOBILE AP.envlibsite-packagesdjangocoremanagementbase.py", line 89, 
in wrapped    
res = handle_func(*args, **kwargs)  File "D:Perso WorkMr CYRILEPUSH NOTIFICATION MOBILE AP.envlibsite-packagesdjangocoremanagementcommandsmigrate.py", line 202, 
in handle    
pre_migrate_apps = pre_migrate_state.apps  File "D:Perso WorkMr CYRILEPUSH NOTIFICATION MOBILE AP.envlibsite-packagesdjangoutilsfunctional.py", line 48, 
in __get__    

res = instance.__dict__[self.name] = self.func(instance)  File "D:Perso WorkMr CYRILEPUSH NOTIFICATION MOBILE AP.envlibsite-packagesdjangodbmigrationsstate.py", line 208, 
in apps    return StateApps(self.real_apps, self.models)  File "D:Perso WorkMr CYRILEPUSH NOTIFICATION MOBILE AP.envlibsite-packagesdjangodbmigrationsstate.py", line 277, 
in __init__    
raise ValueError("n".join(error.msg for error in errors))ValueError: The field admin.LogEntry.user was declared with a lazy reference to 'reviews.employee', but app 'reviews' doesn't provide model 'employee'.
The field reviews.Review.user was declared with a lazy reference to 'reviews.employee', but app 'reviews' doesn't provide model 'employee'.

Answered By: Greko2015 GuFn

Answer 7

The solution is to first add the following line into your settings.py-

AUTH_USER_MODEL="myproject.User"

Where myproject is your project name.
If you again get error then run following commands in your main directory-

python manage.py makemigrations
python manage.py migrate

This worked for me

Answered By: Harshit Sahu

Answer 8

If above steps don´t work, delete all migrations history and your database.

Then "makemigrations" and "migrate" like it was for the first time.

The User model must be created at beginning of the project, before firts migration.

Answered By: Leo Geo

auth.User.groups: (fields.E304) Reverse accessor for 'User.groups' clashes with reverse accessor for 'UserManage.groups'

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