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OperationalError at / no such table: users_user

I had a model Profile which was an extension to my User model which was the ForeignKey of my Post model, but I changed it to an AbstractUser and now if I try migrating or running and refreshing the page the server I get an error.
models.py
from django.db import models
from django.contrib.auth.models import AbstractUser
class User(AbstractUser):
bio = models.TextField(max_length=500,null=True)
from django.db import models
from django.conf import settings
from django.urls import reverse
class Post(models.Model):
author = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, null=True)
title = models.CharField(max_length=100)
content = models.TextField()
def get_absolute_url(self):
return reverse('post-details', kwargs={'pk': self.pk})
settings.py
INSTALLED_APPS = [
...
'posts',
'users',
]
AUTH_USER_MODEL = 'users.User'
error message after I try migrating
Apply all migrations: admin, auth, contenttypes, posts, sessions, users
Traceback (most recent call last):
File "/home/user/Projects/DNF/Project/manage.py", line 22, in <module>
main()
File "/home/user/Projects/DNF/Project/manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/usr/local/lib/python3.10/dist-packages/django/core/management/__init__.py", line 446, in execute_from_command_line
utility.execute()
File "/usr/local/lib/python3.10/dist-packages/django/core/management/__init__.py", line 440, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python3.10/dist-packages/django/core/management/base.py", line 402, in run_from_argv
self.execute(*args, **cmd_options)
File "/usr/local/lib/python3.10/dist-packages/django/core/management/base.py", line 448, in execute
output = self.handle(*args, **options)
File "/usr/local/lib/python3.10/dist-packages/django/core/management/base.py", line 96, in wrapped
res = handle_func(*args, **kwargs)
File "/usr/local/lib/python3.10/dist-packages/django/core/management/commands/migrate.py", line 295, in handle
pre_migrate_apps = pre_migrate_state.apps
File "/usr/local/lib/python3.10/dist-packages/django/utils/functional.py", line 57, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/usr/local/lib/python3.10/dist-packages/django/db/migrations/state.py", line 566, in apps
return StateApps(self.real_apps, self.models)
File "/usr/local/lib/python3.10/dist-packages/django/db/migrations/state.py", line 637, 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 'users.user', but app 'users' doesn't provide model 'user'.
The field posts.Post.author was declared with a lazy reference to 'users.user', but app 'users' doesn't provide model 'user'.
The field users.Profile.user was declared with a lazy reference to 'users.user', but app 'users' doesn't provide model 'user'.

I easily solved it by deleting all the migration files in the migrations folder except the init.py file. And also delete db.sqlite3. Now run the following commands : python manage.py makemigrations and then python manage.py migrate. Now you'll have to create the super user once again, so for this just type the following commmand : python manage.py createsuperuser. Then it will prompt for username, email and password, so enter your credentials and all will continue to work properly once again I hope that this will be helpful.

try to directly reference the User model, not through settings
change the foreign key field to this:
author = models.ForeignKey("users.User", on_delete=models.CASCADE, null=True)

To have a reference to the User model, you should not do through settings directly instead you can use get_user_model() function. This function will return the currently active User model of project( the custom User model if one is specified, or User otherwise).
So change the foreign key field of your Post model like below:
from django.db import models
from django.conf import settings
from django.urls import reverse
from django.contrib.auth import get_user_model
User = get_user_model()
class Post(models.Model):
author = models.ForeignKey(User, on_delete=models.CASCADE, null=True)
...
Reference: get_user_model() [Django-doc]

AttributeError: 'postComments' object has no attribute 'model

I have made a new model postComments for my blogging website and now I am facing the above issue:
models.py:
from django.db import models
from django.contrib.auth.models import User
from django.utils.timezone import now
# Create your models here.
class post(models.Model):
SrNo = models.AutoField(primary_key=True)
title = models.CharField(max_length=50)
content = models.TextField()
author = models.CharField(max_length=50)
slug = models.SlugField(max_length=200)
timeStamp = models.DateTimeField(blank=True)
def __str__(self):
return self.title + " by " + self.author
class postComments(models.Model):
sno = models.AutoField(primary_key=True)
comment = models.TextField()
user = models.ForeignKey(User, on_delete=models.CASCADE)
post = models.ForeignKey(post, on_delete=models.CASCADE)
parent = models.ForeignKey('self', on_delete=models.CASCADE, null=True)
timestamp = models.DateTimeField(default=now)
after writing the above '''postComments``` model the log window is showing me this error:
error log
Exception in thread django-main-thread:
Traceback (most recent call last):
File "C:\Python38\lib\threading.py", line 932, in _bootstrap_inner
self.run()
File "C:\Python38\lib\threading.py", line 870, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\jayant nigam\projects\practise\lib\site-packages\django\utils\autoreload.py", line 53, in wrapper
fn(*args, **kwargs)
File "C:\Users\jayant nigam\projects\practise\lib\site-packages\django\core\management\commands\runserver.py", line 118, in inner_run
self.check(display_num_errors=True)
File "C:\Users\jayant nigam\projects\practise\lib\site-packages\django\core\management\base.py", line 392, in check
all_issues = checks.run_checks(
File "C:\Users\jayant nigam\projects\practise\lib\site-packages\django\core\checks\registry.py", line 70, in run_checks
new_errors = check(app_configs=app_configs, databases=databases)
File "C:\Users\jayant nigam\projects\practise\lib\site-packages\django\contrib\admin\checks.py", line 54, in check_admin_app
errors.extend(site.check(app_configs))
File "C:\Users\jayant nigam\projects\practise\lib\site-packages\django\contrib\admin\sites.py", line 84, in check
if modeladmin.model._meta.app_config in app_configs:
AttributeError: 'postComments' object has no attribute 'model'
admin.py:
from django.contrib import admin
from blog.models import post, postComments
# Register your models here.
admin.site.register((post), (postComments))
urls.py(blog app):
from django.urls import path, include
from blog import views
urlpatterns = [
path('', views.blogHome, name='home'),
path('<str:slug>', views.blogPost, name='blogpost'),
# here blog_name is string variable which will take the input after /blog/anyblogname
# and after this the page will display: this is 'anyblogname'
]
before adding this new model, the website was working just fine.

The correct way to register models is one per register call
from django.contrib import admin
from blog.models import post, postComments
# Register your models here.
admin.site.register(post)
admin.site.register(postComments)

autocomplete fields in Django

Trying to set up autocomplete_fields in django.
I have following model:
from django.db import models
class Genre(models.Model):
title = models.CharField(max_length=255)
class Movie(models.Model):
title = models.CharField(max_length=255)
year = models.IntegerField()
time = models.CharField(max_length=255)
director = models.CharField(max_length=255)
genre = models.ManyToManyField(Genre)
image = models.ImageField(upload_to='images/')
actors = models.TextField()
summary = models.TextField()
admin.py:
from django.contrib import admin
from .models import Movie, Genre
class SettingAdmin(admin.ModelAdmin):
search_fields = ['genre']
class MovieAdmin(admin.ModelAdmin):
autocomplete_fields = ['genre']
admin.site.register(Movie, MovieAdmin)
admin.site.register(Genre)
Error Message:
Exception in thread django-main-thread:
Traceback (most recent call last):
File "c:\users\ali\appdata\local\programs\python\python38\lib\threading.py", line 932, in _
bootstrap_inner
self.run()
File "c:\users\ali\appdata\local\programs\python\python38\lib\threading.py", line 870, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\Ali\Desktop\cinemaEnv\lib\site-packages\django\utils\autoreload.py", line 53, in
wrapper
fn(*args, **kwargs)
File "C:\Users\Ali\Desktop\cinemaEnv\lib\site-packages\django\core\management\commands\runserver.py",
line 117, in inner_run
self.check(display_num_errors=True)
File "C:\Users\Ali\Desktop\cinemaEnv\lib\site-packages\django\core\management\base.py", line 441, in
check
raise SystemCheckError(msg)
django.core.management.base.SystemCheckError: SystemCheckError: System check identified some issues:
ERRORS:
<class 'movies.admin.MovieAdmin'>: (admin.E040) ModelAdmin must define "search_fields", because it's
referenced by MovieAdmin.autocomplete_fields.
i try this code with User model from django.contrib.auth.models and it worked.
i try this code with User model from django.contrib.auth.models and it worked.

As error msg said:
you need to define "search_fields" in Genre admin, since you use autocomplete_fields = ['genre'],
and don't forget to register Genre model with it.
class GenreAdmin(admin.ModelAdmin):
search_fields = ['title']
admin.site.register(Genre, GenreAdmin)

How correctly add permissions to User model of Django?

I am tring to add custom permissions to User model (django.contrib.auth.models).
To __init__.py file of my users app I add:
from django.db.models.signals import pre_migrate
from django.contrib.contenttypes.models import ContentType
from django.contrib.auth import models as auth_models
from django.contrib.auth.models import Permission
from django.conf import settings
from django.dispatch import receiver
#receiver(pre_migrate, sender=auth_models)
def add_user_permissions(sender, **kwargs):
content_type = ContentType.objects.get_for_model(settings.AUTH_USER_MODEL)
Permission.objects.get_or_create(codename='view_user', name=' Can view users', content_type=content_type)
Permission.objects.get_or_create(codename='change_user_password', name=' Can change user password', content_type=content_type)
settings.py:
INSTALLED_APPS = [
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'django.forms',
'django_select2', # "django-select2" application
'custom_app', # "custom_app" application
'custom_app_2', # "custom_app_2" application
'modeltranslation', # "django-modeltranslation" application
'users', # "users" application
]
ERROR:
Traceback (most recent call last):
File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/utils/autoreload.py", line 228, in wrapper
fn(*args, **kwargs)
File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 117, in inner_run
autoreload.raise_last_exception()
File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/utils/autoreload.py", line 251, in raise_last_exception
six.reraise(*_exception)
File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/utils/autoreload.py", line 228, in wrapper
fn(*args, **kwargs)
File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/__init__.py", line 27, in setup
apps.populate(settings.INSTALLED_APPS)
File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/apps/registry.py", line 85, in populate
app_config = AppConfig.create(entry)
File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/apps/config.py", line 94, in create
module = import_module(entry)
File "/usr/local/Cellar/python/2.7.14/Frameworks/Python.framework/Versions/2.7/lib/python2.7/importlib/__init__.py", line 37, in import_module
__import__(name)
File "/Applications/Projects/web/dashboard.kase.kz/users/__init__.py", line 5, in <module>
from django.contrib.contenttypes.models import ContentType
File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/contrib/contenttypes/models.py", line 139, in <module>
class ContentType(models.Model):
File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/db/models/base.py", line 110, in __new__
app_config = apps.get_containing_app_config(module)
File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/apps/registry.py", line 247, in get_containing_app_config
self.check_apps_ready()
File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/apps/registry.py", line 125, in check_apps_ready
raise AppRegistryNotReady("Apps aren't loaded yet.")
django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.
Question: How to fix this error?

Finally I found solution from documentation.
1) You need to create empty migration with next command:
python manage.py makemigrations --empty users
users - name of the app
2) Command create 0001_initial.py file where you need to put next code:
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import migrations
def forwards_func(apps, schema_editor):
User = apps.get_model('auth', 'User')
Permission = apps.get_model('auth', 'Permission')
ContentType = apps.get_model('contenttypes', 'ContentType')
content_type = ContentType.objects.get_for_model(User)
db_alias = schema_editor.connection.alias
Permission.objects.using(db_alias).bulk_create([
Permission(codename='view_user', name=' Can view users', content_type=content_type),
Permission(codename='change_user_password', name=' Can change user password', content_type=content_type)
])
class Migration(migrations.Migration):
dependencies = [
]
operations = [
migrations.RunPython(forwards_func),
]

Please try adding this code at the top of the init.py file:
import django
django.setup()

copy all code in your init.py to a new created file called signals.py and change your __init__.py to :
default_app_config = 'user.apps.UserConfig'
signals.py
from django.db.models.signals import pre_migrate
from django.contrib.contenttypes.models import ContentType
from django.contrib.auth.models import AuthConfig
from django.contrib.auth.models import Permission
from django.conf import settings
from django.dispatch import receiver
#receiver(pre_migrate, sender=AuthConfig)
def add_user_permissions(sender, **kwargs):
content_type = ContentType.objects.get_for_model(settings.AUTH_USER_MODEL)
Permission.objects.get_or_create(codename='view_user', name=' Can view users', content_type=content_type)
Permission.objects.get_or_create(codename='change_user_password', name=' Can change user password', content_type=content_type)
then in user/apps.py:
from django.apps import AppConfig
class UserConfig(AppConfig):
name = 'user'
verbose_name = 'User'
def ready(self):
import user.signals
your error is occer because __init__.py will call User in models.py,but User model will be register after __init__.py run over,so you need call your signal when your User model is ready.
You want to add some perms related with User so:
class MyUser(User):
class Meta:
permissions = (
("view_user", "view_user"),
("change_user_password", "change_user_password"),
)
and in settings.py
AUTH_USER_MODEL = "user.MyUser"

Getting error when running the Django server on my Mac 10.8.5

I am trying to setup Python/Django/Mysql on my Mac but I keep getting the following error when I run this command in terminal
Python manage.py runserver
The error I get is
Marks-MacBook-Air:FirstBlog mmillar$ python manage.py runserver
Validating models...
Unhandled exception in thread started by <bound method Command.inner_run of <django.contrib.staticfiles.management.commands.runserver.Command object at 0x1017c2b10>>
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 92, in inner_run
self.validate(display_num_errors=True)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/base.py", line 280, in validate
num_errors = get_validation_errors(s, app)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/validation.py", line 35, in get_validation_errors
for (app_name, error) in get_app_errors().items():
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/loading.py", line 166, in get_app_errors
self._populate()
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/loading.py", line 72, in _populate
self.load_app(app_name, True)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/loading.py", line 96, in load_app
models = import_module('.models', app_name)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/utils/importlib.py", line 35, in import_module
__import__(name)
File "/Users/mmillar/PycharmProjects/FirstBlog/blog/models.py", line 5, in <module>
class post(models.Model):
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/base.py", line 145, in __new__
new_class.add_to_class(obj_name, obj)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/base.py", line 265, in add_to_class
value.contribute_to_class(cls, name)
TypeError: Error when calling the metaclass bases
unbound method contribute_to_class() must be called with TextField instance as first argument (got ModelBase instance instead)
models.py
from django.db import models
# Create your models here.
class post(models.Model):
author = models.CharField(max_length=30)
title = models.CharField(max_length=100)
bodytext = models.TextField
timestamp = models.DateTimeField

I think you did something like that:
wrong:
class Foo(models.Model):
bar = models.TextField
correct:
class Foo(models.Model):
bar = models.TextField()
Thus you try to validate with a class instead of a class instance.

You models.py has to be as follows:
from django.db import models
# Create your models here.
class post(models.Model):
author = models.CharField(max_length=30)
title = models.CharField(max_length=100)
bodytext = models.TextField()
timestamp = models.DateTimeField()
Cause: The unbound method contribute_to_class() TypeError - indicates
"A model field was not declared properly, the parentheses after the
field types name were missing"
You have parenthesis missing for 2 fields:
bodytext = models.TextField
timestamp = models.DateTimeField