Question

如何在Django中创建自己的用户模型，我希望我的P.K是用户名字段而不是Django自动生成的id字段？

我正在尝试以下方法：

我已创建userprofiles应用程序，我将在其中创建自定义django用户模型

INSTALLED_APPS = [
       ...
    'userprofiles.apps.UserprofilesConfig',
       ...
]

AUTH_USER_MODEL = 'userprofiles.User'

在我的userprofiles/models.py文件中，我定义了以下内容：

from __future__ import unicode_literals
from django.db import models
from django.contrib.auth.models import AbstractBaseUser, UserManager, PermissionsMixin

# Create your models here.
class User(AbstractBaseUser, PermissionsMixin):

GENDER_MALE = 'M'
GENDER_FEMALE = 'F'
GENDER_OTHER = 'O'
GENDER_CHOICES = (
    (GENDER_MALE, u'Male'),
    (GENDER_FEMALE, u'Female'),
)

username = models.CharField(max_length=15, unique=True, db_index=True, primary_key=True)

first_name=models.CharField(max_length=50, blank=False,)
last_name=models.CharField(max_length=50, blank=False,)
photo = models.ImageField(upload_to='avatars', blank=True)
email = models.EmailField(max_length=254, unique=True)
is_staff = models.BooleanField(
    default=True,
    help_text='Designates whether the user can log into this admin site.')
is_active = models.BooleanField(default=True)
#date_joined = models.DateTimeField(default=None)
#date_joined = models.DateTimeField()

gender = models.CharField(
    max_length=1,
    choices=GENDER_CHOICES,
    blank=False, )

is_player = models.BooleanField(default=False)
is_coach = models.BooleanField(default=False)
is_viewer = models.BooleanField(default=False)

USERNAME_FIELD = 'username'
REQUIRED_FIELDS = ['email',]
objects = UserManager()

class Meta:
    db_table = 'auth_user'

def get_full_name(self):
    """
    Returns the first_name plus the last_name, with a space in between.
    """
    full_name = '%s %s' % (self.first_name, self.last_name)
    return full_name.strip()

def get_short_name(self):
    "Returns the short name for the user."
    return self.first_name

我使用AbstractBaseUser class原因：

AbstractBaseUser提供了User模型的核心实现，包括散列密码和标记化密码重置。你必须然后提供一些关键的实现细节：...

以及I considered this explanation，其中说有必要手动添加我需要的字段。

然后，当我执行迁移时，我在User模型中定义的字段（继承自AbstractBaseUser）将在我的数据库中创建：

(fuupbol) ➜  fuupbol_project git:(master) ✗ python manage.py makemigrations
    Migrations for 'userprofiles':
    0013_auto_20160418_2252.py:
    - Add field groups to user
    - Add field user_permissions to user
    - Alter field is_superuser on user
    (fuupbol) ➜  fuupbol_project git:(master) ✗ python manage.py migrate
    Operations to perform:
    Apply all migrations: sessions, userprofiles, admin, contenttypes, auth
    Running migrations:
    Rendering model states... DONE
     Applying userprofiles.0013_auto_20160418_2252... OK
    (fuupbol) ➜  fuupbol_project git:(master) ✗

然后我通过这种方式通过命令行界面创建了一个超级用户：

(fuupbol) ➜  fuupbol_project git:(master) ✗ python manage.py createsuperuser
Username: cdiaz   
Email: cdiaz@fuupbol.org
Password: 
Password (again): 
Superuser created successfully.
(fuupbol) ➜  fuupbol_project git:(master) ✗

此外，我添加了自定义用户模型的这些字段，Django Admin可以通过以下方式查看它们：

像Django一样，使用特殊表单在admin中相对于Users模型创建和编辑表单，因为这些只被认为是django原始用户模型。

这里我们使用带有AbstractBaseUser的自定义django用户模型，然后我们使用以下类：

UserChangeForm，因此这种方式应用于管理员用户表单，并且使用我之前修改后自定义的用户表单创建用户的UserCreationForm

在我的userprofiles/forms.py文件中

from django import forms
from django.contrib.auth.forms import (UserChangeForm,UserCreationForm)

from .models import User

class CustomUserChangeForm(UserChangeForm):
    class Meta(UserChangeForm.Meta):
        model = User

class CustomUserCreationForm(UserCreationForm):
    class Meta(UserCreationForm.Meta):
        model = User

在我的userprofiles/admin.py文件中，创建一个CustomUserAdmin类，使用我在自定义用户模型中定义的字段进行自定义

from django.contrib import admin                                                                                                                                                       
from django.contrib.auth.admin import UserAdmin                                                                                                                                        

from .models import User                                                                                                                                                               
from .forms import CustomUserChangeForm, CustomUserCreationForm                                                                                                                        

# Register your models here.                                                                                                                                                           

class CustomUserAdmin(UserAdmin):                                                                                                                                                      
    form = CustomUserChangeForm                                                                                                                                                        
    add_form = CustomUserCreationForm                                                                                                                                                  
    fieldsets = UserAdmin.fieldsets + (                                                                                                                                                
        (                                                                                                                                                                              
            None, {                                                                                                                                                                    
                'fields':(                                                                                                                                                             
                    'username',                                                   
                    'password',                                                                                                                                                        
                    'first_name',                                                                                                                                                      
                    'last_name',                                                                                                                                                       
                    'gender',                                                                                                                                                          
                    'email',                                                                                                                                                           
                    'photo',                                                                                                                                                           
                    'is_staff',                                                                                                                                                        
                    'is_active',                                                                                                                                                       
                    'is_superuser',                                                                                                                                                    
                    'is_player',                                                                                                                                                       
                    'is_coach',                                                                                                                                                        
                    'is_viewer',                                                                                                                                                       
                    'last_login',                                                                                                                                                                                                                                                                                                                           
                )                                                                                                                                                                      
            }                                                                                                                                                                          
        ),                                                                                                                                                                             
    )                                                                                                                                                                                  


#Change our UserAdmin class to inherit of our CustomUserAdmin created above (do not inherit of model.ModelAdmin)                                                                       
@admin.register(User)                                                                                                                                                                  
class UserAdmin(CustomUserAdmin):                                                                                                                                                                                            
    list_display = ('username','password','first_name','last_name','gender','email','photo','is_staff','is_active','is_superuser','is_player','is_coach','is_viewer','last_login',)

然后当我去Django管理员并看到编辑已经创建的用户的选项时，我收到此消息：

目前我的用户模型中没有date_joined属性，如果我将date_joined属性添加到我的用户模型，并执行迁移，我收到以下消息：

(fuupbol) ➜  fuupbol_project git:(master) ✗ python manage.py makemigrations userprofiles
Migrations for 'userprofiles':
  0022_user_date_joined.py:
    - Add field date_joined to user
(fuupbol) ➜  fuupbol_project git:(master) ✗

当我执行migrate命令

时

(fuupbol) ➜  fuupbol_project git:(master) ✗ python manage.py migrate userprofiles       
    Operations to perform:
      Apply all migrations: userprofiles
    Running migrations:
      Rendering model states... DONE
      Applying userprofiles.0015_user_date_joined...Traceback (most recent call last):
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/db/backends/utils.py", line 64, in execute
        return self.cursor.execute(sql, params)
    psycopg2.IntegrityError: column "date_joined" contains null values


    The above exception was the direct cause of the following exception:

    Traceback (most recent call last):
      File "manage.py", line 10, in <module>
        execute_from_command_line(sys.argv)
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/core/management/__init__.py", line 353, in execute_from_command_line
        utility.execute()
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/core/management/__init__.py", line 345, in execute
        self.fetch_command(subcommand).run_from_argv(self.argv)
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/core/management/base.py", line 348, in run_from_argv
        self.execute(*args, **cmd_options)
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/core/management/base.py", line 399, in execute
        output = self.handle(*args, **options)
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/core/management/commands/migrate.py", line 200, in handle
        executor.migrate(targets, plan, fake=fake, fake_initial=fake_initial)
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/db/migrations/executor.py", line 92, in migrate
        self._migrate_all_forwards(plan, full_plan, fake=fake, fake_initial=fake_initial)
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/db/migrations/executor.py", line 121, in _migrate_all_forwards
        state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/db/migrations/executor.py", line 198, in apply_migration
        state = migration.apply(state, schema_editor)
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/db/migrations/migration.py", line 123, in apply
        operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/db/migrations/operations/fields.py", line 62, in database_forwards
        field,
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/db/backends/base/schema.py", line 396, in add_field
        self.execute(sql, params)
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/db/backends/base/schema.py", line 110, in execute
        cursor.execute(sql, params)
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/db/backends/utils.py", line 79, in execute
        return super(CursorDebugWrapper, self).execute(sql, params)
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/db/backends/utils.py", line 64, in execute
        return self.cursor.execute(sql, params)
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/db/utils.py", line 95, in __exit__
        six.reraise(dj_exc_type, dj_exc_value, traceback)
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/utils/six.py", line 685, in reraise
        raise value.with_traceback(tb)
      File "/home/bgarcial/.virtualenvs/fuupbol/lib/python3.4/site-packages/django/db/backends/utils.py", line 64, in execute
        return self.cursor.execute(sql, params)
    django.db.utils.IntegrityError: column "date_joined" contains null values

    (fuupbol) ➜  fuupbol_project git:(master) ✗

我无法理解错误消息django.db.utils.IntegrityError: column "date_joined" contains null values的原因，因为此时我没有此属性date_joined

任何方向都将不胜感激。感谢

Answer 1

我假设您没有在任何实例上拥有date_joined数据，其中一个迁移要求它不为null。您可以进入数据库并添加手册以暂时绕过它。

自定义Django用户模型 - 用户名作为主键属性

1 个答案: