Python 如何在django中为SQLServer数据库创建身份验证系统？

我最近在一个django项目中使用SQLServer数据库。我已经用SQLServer连接了数据库，我想为数据库中的表创建一个身份验证系统

我知道django附带了一个内置的身份验证系统，但是没有办法告诉django使用数据库中的特定表进行身份验证，它只是在默认的管理页面中查找用户

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django有没有办法在SQLServer数据库中的特定表中查找数据并验证用户输入的信息？

您可以通过实现自己的用户模型，然后告诉django如何验证用户身份来实现这一点。您的模型应该如下所示：

class Users(models.Model):
    id = models.IntegerField(primary_key=True)
    is_active = models.IntegerField(default=1)
    date_joined = models.DateTimeField(default=timezone.now)
    last_login = models.DateTimeField(default=timezone.now)
    username = models.CharField(max_length=30, unique=True)
    password = models.CharField(max_length=30)

    @property
    def is_authenticated(self):
        return True

from django.contrib.auth.backends import ModelBackend
from users.models import Users
from django.contrib.auth.hashers import *
from login.util import *

class PersonalizedLoginBackend(ModelBackend):
    def authenticate(self, request=None, username=None, password=None, **kwars):
        #Here define you login criteria, like encrypting the password and then
        #Checking it matches. This is an example:
        try:
            user = Users.objects.get(username=username)
        except Users.DoesNotExist:
            return None
        if check_password(password, user.password):
            return user
        else:
            return None

    def get_user(self, user_id):
        #This shall return the user given the id
        from django.contrib.auth.models import AnonymousUser
        try:
            user = Users.objects.get(id=user_id)
        except Exception as e:
            user = AnonymousUser()
        return user

您可以添加额外的字段，但django需要这些字段。根据文件中的定义，经过认证的财产应始终为真

下一步是定义您的登录如何进行身份验证。在项目中的任意位置创建一个文件名backends.py，其中声明了两种方法：authenticate和get_user，它应该是这样的：

class Users(models.Model):
    id = models.IntegerField(primary_key=True)
    is_active = models.IntegerField(default=1)
    date_joined = models.DateTimeField(default=timezone.now)
    last_login = models.DateTimeField(default=timezone.now)
    username = models.CharField(max_length=30, unique=True)
    password = models.CharField(max_length=30)

    @property
    def is_authenticated(self):
        return True

from django.contrib.auth.backends import ModelBackend
from users.models import Users
from django.contrib.auth.hashers import *
from login.util import *

class PersonalizedLoginBackend(ModelBackend):
    def authenticate(self, request=None, username=None, password=None, **kwars):
        #Here define you login criteria, like encrypting the password and then
        #Checking it matches. This is an example:
        try:
            user = Users.objects.get(username=username)
        except Users.DoesNotExist:
            return None
        if check_password(password, user.password):
            return user
        else:
            return None

    def get_user(self, user_id):
        #This shall return the user given the id
        from django.contrib.auth.models import AnonymousUser
        try:
            user = Users.objects.get(id=user_id)
        except Exception as e:
            user = AnonymousUser()
        return user

现在，您需要在settings.py上告诉django后端在哪里：

AUTHENTICATION_BACKENDS = (
    # ... your other backends
    'path.to.backends.PersonalizedLoginBackend',
)

从那里，你应该能够像平常一样登录，首先进行身份验证，然后使用do_登录功能

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