我已经创建了一个自定义用户模型Student来修改Django提供的默认注册页面。
from django.db import models
from django.contrib.auth.models import AbstractUser
class Student(AbstractUser):
email = models.EmailField(unique=True)
roll = models.CharField(max_length=200, blank=False)
contact_no = models.DecimalField(
max_digits=10, decimal_places=0, blank=False)
然后我通过运行以下命令迁移数据库：
python manage.py makemigrations students
python manage.py migrate
现在，当我尝试使用命令python manage.py createsuperuser创建超级用户时，它显示以下错误：
Traceback (most recent call last):
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/db/backends/utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/db/backends/sqlite3/base.py", line 296, in execute
return Database.Cursor.execute(self, query, params)
sqlite3.IntegrityError: NOT NULL constraint failed: students_student.contact_no
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "manage.py", line 15, in <module>
execute_from_command_line(sys.argv)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
utility.execute()
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/core/management/__init__.py", line 375, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/core/management/base.py", line 316, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/contrib/auth/management/commands/createsuperuser.py", line 59, in execute
return super().execute(*args, **options)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/core/management/base.py", line 353, in execute
output = self.handle(*args, **options)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/contrib/auth/management/commands/createsuperuser.py", line 184, in handle
self.UserModel._default_manager.db_manager(database).create_superuser(**user_data)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/contrib/auth/models.py", line 161, in create_superuser
return self._create_user(username, email, password, **extra_fields)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/contrib/auth/models.py", line 144, in _create_user
user.save(using=self._db)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/contrib/auth/base_user.py", line 73, in save
super().save(*args, **kwargs)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/db/models/base.py", line 717, in save
force_update=force_update, update_fields=update_fields)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/db/models/base.py", line 747, in save_base
updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/db/models/base.py", line 830, in _save_table
result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/db/models/base.py", line 868, in _do_insert
using=using, raw=raw)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/db/models/manager.py", line 82, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/db/models/query.py", line 1133, in _insert
return query.get_compiler(using=using).execute_sql(return_id)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/db/models/sql/compiler.py", line 1285, in execute_sql
cursor.execute(sql, params)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/db/backends/utils.py", line 100, in execute
return super().execute(sql, params)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/db/backends/utils.py", line 68, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/db/backends/utils.py", line 77, in _execute_with_wrappers
return executor(sql, params, many, context)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/db/backends/utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/db/utils.py", line 89, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/db/backends/utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "/home/anirudh/.local/share/virtualenvs/Amrita-event-manager-DHqKHtGE/lib/python3.5/site-packages/django/db/backends/sqlite3/base.py", line 296, in execute
return Database.Cursor.execute(self, query, params)
django.db.utils.IntegrityError: NOT NULL constraint failed: students_student.contact_no
如何使用这些字段创建超级用户？
答案 0 :(得分：2)
有两种可能的方法。您可以在require_fields中添加roll和contact_no，以便超级用户命令询问它们，或者您可以使用自定义usermanager覆盖您的 create_superuser 方法。
在REQUIRED_FIELDS中添加滚动和contact_no
class Student(AbstractUser):
email = models.EmailField(unique=True)
roll = models.CharField(max_length=200, blank=False)
contact_no = models.DecimalField(
max_digits=10, decimal_places=0, blank=False)
USERNAME_FIELD = 'email'
REQUIRED_FIELDS = ['roll', 'contact_no',] # By doing so create superuser command will ask their input
添加自定义usermanager并覆盖create_superuser方法
from django.contrib.auth.models import BaseUserManager, AbstractUser
from django.db import models
from django.utils import timezone
class UserManager(BaseUserManager):
def _create_user(self, email, password, **extra_fields):
"""Create and save a User with the given email and password."""
if not email:
raise ValueError('The email must be set')
if not password:
raise ValueError('The password must be set')
email = self.normalize_email(email)
user = self.model(email=email, **extra_fields)
user.set_password(password)
user.save(using=self._db)
return user
def create_superuser(self, email, password, **extra_fields):
"""Create and save a SuperUser with the given email and password."""
extra_fields.setdefault('is_staff', True)
extra_fields.setdefault('is_superuser', True)
extra_fields.setdefault('roll', YOUR DESIRE VALUE )
extra_fields.setdefault('contact_no', YOUR DESIRE VALUE)
if extra_fields.get('is_staff') is not True:
raise ValueError('Superuser must have is_staff=True.')
if extra_fields.get('is_superuser') is not True:
raise ValueError('Superuser must have is_superuser=True.')
super_user = self._create_user(email, password, **extra_fields)
return super_user
class Student(AbstractUser):
email = models.EmailField(unique=True)
roll = models.CharField(max_length=200, blank=False)
contact_no = models.DecimalField(
max_digits=10, decimal_places=0, blank=False)
objects = UserManager()
USERNAME_FIELD = 'email'