Django中每次返回NULL的自定义身份验证

Question

我是django的初学者，我想使用自定义用户模型构建身份验证。 我已提出问题Here。有人建议我继承用户模型

我创建了自定义用户模型。由于所有密码都是使用bcrypt函数存储的，所以我创建了自己的自定义身份验证。现在，每次我登录时，即使我的密码是正确的，我也不会得到任何信息。我想知道我错过了什么

models.py

class AdminUserManager(BaseUserManager):
    def create_user(self, username, password):
        if username is None or password is None:
            raise ValueError("Username and Password is Required")
        else:
            user = self.model(
                username = username,
                password = str(bcrypt.hashpw(password.encode('utf8'),bcrypt.gensalt()),'utf-8')
            )
            user.save(using=self.db)
            return user



class AdminUsers(AbstractBaseUser):
    username=models.CharField(max_length=50,unique=True)
    firstname=models.CharField(max_length=50)
    department=models.CharField(max_length=50)
    mail=models.CharField(max_length=50)
    id=models.IntegerField(primary_key=True)
    password=models.CharField(max_length=200)
    # some more field
    USERNAME_FIELD = 'username'
    REQUIRED_FIELDS = ['mail']

    objects = AdminUserManager()
    class Meta:
        db_table="admin_users"

    def __str__(self):
        return self.username

backend.py

from .models import AdminUsers
import bcrypt

class CustomAuthentication(object):
    def authenticate(self,username,password):
        if username is not None and password is not None:
            user = AdminUsers.objects.get(username=username)
            hashed_password = user.password
            is_check = bcrypt.checkpw(password.encode('utf8'),hashed_password.encode('utf8'))
            if is_check == True:
                return user
            else:
                return None
        else:
            return None
    
    def get_user(self,id):
        user = AdminUsers.objects.get(id=id)
        if user is not None:
            return user
        else:
            return None
        

views.py

def login(request):
    if request.method == 'POST':
        username = request.POST.get('username')
        password = request.POST.get('password')
        if username is not None and password is not None:
            is_check = authenticate(username=username,password=password)
            # user=AdminUsers.objects.get(username=username)
            # print(user.username,user.password)
            # hashed_password = user.password
            # is_check = bcrypt.checkpw(password.encode('utf8'),hashed_password.encode('utf8'))
            print(is_check)
            if is_check==True:
                return render(request,'Layouts/nav-side-bar.html',context={"User":is_check})
            else:
                return render(request,'AdminUsers/login.html')
    return render(request,'AdminUsers/login.html')

我在设置中添加了AUTHENTICATION_BACKENDS和 AUTH_USER_MODEL

***编辑1***

为了检查我的CustomAuthentication是否正常工作，在Authentication函数中，我对一些部分进行了注释，并在不检查密码的情况下返回用户。我还是一无所获。 据我所知，我的customauthentication没有用于身份验证

def authenticate(self,username,password):
        if username is not None and password is not None:
            user = AdminUsers.objects.get(username=username)
            return user
            # hashed_password = user.password
            # is_check = bcrypt.checkpw(password.encode('utf8'),hashed_password.encode('utf8'))
            # if is_check == True:
            #     return user
            # else:
            #     return None
        else:
            return None

Answer 1

我犯了个错误。 在创建CustomAuthentication时，我必须继承Documentation中给出的BaseBackend。 所以backend.py应该是这样的

from django.db import models
from django.db.models.base import Model
from .models import AdminUsers
import bcrypt
from django.contrib.auth.backends import BaseBackend

class CustomAuthentication(BaseBackend):
    def authenticate(self,request,username=None,password=None):
        if username is not None and password is not None:
            user = AdminUsers.objects.get(username=username)
            hashed_password = user.password
            is_check = bcrypt.checkpw(password.encode('utf8'),hashed_password.encode('utf8'))
            if is_check == True:
                return user
            else:
                return None
        else:
            return None
    
    def get_user(self,user_id):
        user = AdminUsers.objects.get(id=user_id)
        if user is not None:
            return user
        else:
            return None