Python 使用Django中的遗留数据库进行身份验证登录

我正在Django创建一个项目，我有一个

帮助热线

数据库，我想在项目中使用它。在数据库中，我有一个存储登录信息的表

log\u user

，但除了Django默认表之外，我找不到其他身份验证方法

视图.py

from django.shortcuts import render
from django.http import HttpResponse
from .forms import Person
from django.contrib.auth import authenticate, login

def user_login(request):
    if request.method == 'POST':
        form = Person(request.POST)
        if form.is_valid():
            username = request.POST['username']
            password = request.POST['password']
            user = authenticate(request, username=username, password=password)
            if user is not None:
                if user.is_active:
                    login(request, user)
                    return HttpResponse('Authenticated sucessfully')
                else:
                    return HttpResponse('Disable account')
            else:
                return HttpResponse('Invalid Login')
    else:
        form = Person()
        return render(request, 'login2.html', {'form': form})

from django import forms
from .models import Loginteste

class Person(forms.ModelForm):
    class Meta:
        model = Loginteste
        fields = ['username', 'password']

from django.db import models

class Loginteste(models.Model):
    username = models.CharField(max_length=50, blank=True, null=True)
    password = models.CharField(max_length=50, blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'loginteste'

from .models import Loginteste

class MyBackend:
    def authenticate(self, request, username=None, password=None):
        user = Loginteste.object.get(username=username)
        if user.check_password(password):
            return (request, user)

from django.contrib.auth.models import User
from .models import Loginteste

class MyAuthBackend:
    def authenticate(self, request, username=None, password=None):
        if username is None or password is None:
            # nothing to do
            return None

        # get 'User' object
        try:
            usr = User.objects.get(username=username)
        except User.DoesNotExist:
            return None

        # get 'Loginteste' object
        try:
            loginteste = Loginteste.objects.get(username=username)
        except Loginteste.DoesNotExist:
            return None

        # authenticate user
        if not loginteste.check_password(password):
            # incorrect password
            return None

        return usr

    def get_user(self, pk):
        try:
            return User.objects.get(pk=pk)
        except User.DoesNotExist:
            pass

        return None

AUTHENTICATION_BACKENDS = [
    'project_config.auth_backends.MyAuthBackend',
    # 'django.contrib.auth.backends.ModelBackend',
]

forms.py

from django.shortcuts import render
from django.http import HttpResponse
from .forms import Person
from django.contrib.auth import authenticate, login

def user_login(request):
    if request.method == 'POST':
        form = Person(request.POST)
        if form.is_valid():
            username = request.POST['username']
            password = request.POST['password']
            user = authenticate(request, username=username, password=password)
            if user is not None:
                if user.is_active:
                    login(request, user)
                    return HttpResponse('Authenticated sucessfully')
                else:
                    return HttpResponse('Disable account')
            else:
                return HttpResponse('Invalid Login')
    else:
        form = Person()
        return render(request, 'login2.html', {'form': form})

from django import forms
from .models import Loginteste

class Person(forms.ModelForm):
    class Meta:
        model = Loginteste
        fields = ['username', 'password']

from django.db import models

class Loginteste(models.Model):
    username = models.CharField(max_length=50, blank=True, null=True)
    password = models.CharField(max_length=50, blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'loginteste'

from .models import Loginteste

class MyBackend:
    def authenticate(self, request, username=None, password=None):
        user = Loginteste.object.get(username=username)
        if user.check_password(password):
            return (request, user)

from django.contrib.auth.models import User
from .models import Loginteste

class MyAuthBackend:
    def authenticate(self, request, username=None, password=None):
        if username is None or password is None:
            # nothing to do
            return None

        # get 'User' object
        try:
            usr = User.objects.get(username=username)
        except User.DoesNotExist:
            return None

        # get 'Loginteste' object
        try:
            loginteste = Loginteste.objects.get(username=username)
        except Loginteste.DoesNotExist:
            return None

        # authenticate user
        if not loginteste.check_password(password):
            # incorrect password
            return None

        return usr

    def get_user(self, pk):
        try:
            return User.objects.get(pk=pk)
        except User.DoesNotExist:
            pass

        return None

AUTHENTICATION_BACKENDS = [
    'project_config.auth_backends.MyAuthBackend',
    # 'django.contrib.auth.backends.ModelBackend',
]

型号.py

from django.shortcuts import render
from django.http import HttpResponse
from .forms import Person
from django.contrib.auth import authenticate, login

def user_login(request):
    if request.method == 'POST':
        form = Person(request.POST)
        if form.is_valid():
            username = request.POST['username']
            password = request.POST['password']
            user = authenticate(request, username=username, password=password)
            if user is not None:
                if user.is_active:
                    login(request, user)
                    return HttpResponse('Authenticated sucessfully')
                else:
                    return HttpResponse('Disable account')
            else:
                return HttpResponse('Invalid Login')
    else:
        form = Person()
        return render(request, 'login2.html', {'form': form})

from django import forms
from .models import Loginteste

class Person(forms.ModelForm):
    class Meta:
        model = Loginteste
        fields = ['username', 'password']

from django.db import models

class Loginteste(models.Model):
    username = models.CharField(max_length=50, blank=True, null=True)
    password = models.CharField(max_length=50, blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'loginteste'

from .models import Loginteste

class MyBackend:
    def authenticate(self, request, username=None, password=None):
        user = Loginteste.object.get(username=username)
        if user.check_password(password):
            return (request, user)

from django.contrib.auth.models import User
from .models import Loginteste

class MyAuthBackend:
    def authenticate(self, request, username=None, password=None):
        if username is None or password is None:
            # nothing to do
            return None

        # get 'User' object
        try:
            usr = User.objects.get(username=username)
        except User.DoesNotExist:
            return None

        # get 'Loginteste' object
        try:
            loginteste = Loginteste.objects.get(username=username)
        except Loginteste.DoesNotExist:
            return None

        # authenticate user
        if not loginteste.check_password(password):
            # incorrect password
            return None

        return usr

    def get_user(self, pk):
        try:
            return User.objects.get(pk=pk)
        except User.DoesNotExist:
            pass

        return None

AUTHENTICATION_BACKENDS = [
    'project_config.auth_backends.MyAuthBackend',
    # 'django.contrib.auth.backends.ModelBackend',
]

auth_backend.py

from django.shortcuts import render
from django.http import HttpResponse
from .forms import Person
from django.contrib.auth import authenticate, login

def user_login(request):
    if request.method == 'POST':
        form = Person(request.POST)
        if form.is_valid():
            username = request.POST['username']
            password = request.POST['password']
            user = authenticate(request, username=username, password=password)
            if user is not None:
                if user.is_active:
                    login(request, user)
                    return HttpResponse('Authenticated sucessfully')
                else:
                    return HttpResponse('Disable account')
            else:
                return HttpResponse('Invalid Login')
    else:
        form = Person()
        return render(request, 'login2.html', {'form': form})

from django import forms
from .models import Loginteste

class Person(forms.ModelForm):
    class Meta:
        model = Loginteste
        fields = ['username', 'password']

from django.db import models

class Loginteste(models.Model):
    username = models.CharField(max_length=50, blank=True, null=True)
    password = models.CharField(max_length=50, blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'loginteste'

from .models import Loginteste

class MyBackend:
    def authenticate(self, request, username=None, password=None):
        user = Loginteste.object.get(username=username)
        if user.check_password(password):
            return (request, user)

from django.contrib.auth.models import User
from .models import Loginteste

class MyAuthBackend:
    def authenticate(self, request, username=None, password=None):
        if username is None or password is None:
            # nothing to do
            return None

        # get 'User' object
        try:
            usr = User.objects.get(username=username)
        except User.DoesNotExist:
            return None

        # get 'Loginteste' object
        try:
            loginteste = Loginteste.objects.get(username=username)
        except Loginteste.DoesNotExist:
            return None

        # authenticate user
        if not loginteste.check_password(password):
            # incorrect password
            return None

        return usr

    def get_user(self, pk):
        try:
            return User.objects.get(pk=pk)
        except User.DoesNotExist:
            pass

        return None

AUTHENTICATION_BACKENDS = [
    'project_config.auth_backends.MyAuthBackend',
    # 'django.contrib.auth.backends.ModelBackend',
]

---

我尝试使用默认表“User”并使用登录功能，但无法使用已有的表（

log\u User

，位于数据库

HelpDesk

）。

我想我现在理解了您的问题

据我所知，Django确实依赖于

用户

模型；它可以是一个，但必须有某种类型的

用户

模型

构建时，它仍然必须返回

User

实例（或自定义

User

模型实例）

例如：

文件auth_backends.py

from django.shortcuts import render
from django.http import HttpResponse
from .forms import Person
from django.contrib.auth import authenticate, login

def user_login(request):
    if request.method == 'POST':
        form = Person(request.POST)
        if form.is_valid():
            username = request.POST['username']
            password = request.POST['password']
            user = authenticate(request, username=username, password=password)
            if user is not None:
                if user.is_active:
                    login(request, user)
                    return HttpResponse('Authenticated sucessfully')
                else:
                    return HttpResponse('Disable account')
            else:
                return HttpResponse('Invalid Login')
    else:
        form = Person()
        return render(request, 'login2.html', {'form': form})

from django import forms
from .models import Loginteste

class Person(forms.ModelForm):
    class Meta:
        model = Loginteste
        fields = ['username', 'password']

from django.db import models

class Loginteste(models.Model):
    username = models.CharField(max_length=50, blank=True, null=True)
    password = models.CharField(max_length=50, blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'loginteste'

from .models import Loginteste

class MyBackend:
    def authenticate(self, request, username=None, password=None):
        user = Loginteste.object.get(username=username)
        if user.check_password(password):
            return (request, user)

from django.contrib.auth.models import User
from .models import Loginteste

class MyAuthBackend:
    def authenticate(self, request, username=None, password=None):
        if username is None or password is None:
            # nothing to do
            return None

        # get 'User' object
        try:
            usr = User.objects.get(username=username)
        except User.DoesNotExist:
            return None

        # get 'Loginteste' object
        try:
            loginteste = Loginteste.objects.get(username=username)
        except Loginteste.DoesNotExist:
            return None

        # authenticate user
        if not loginteste.check_password(password):
            # incorrect password
            return None

        return usr

    def get_user(self, pk):
        try:
            return User.objects.get(pk=pk)
        except User.DoesNotExist:
            pass

        return None

AUTHENTICATION_BACKENDS = [
    'project_config.auth_backends.MyAuthBackend',
    # 'django.contrib.auth.backends.ModelBackend',
]

文件settings.py

from django.shortcuts import render
from django.http import HttpResponse
from .forms import Person
from django.contrib.auth import authenticate, login

def user_login(request):
    if request.method == 'POST':
        form = Person(request.POST)
        if form.is_valid():
            username = request.POST['username']
            password = request.POST['password']
            user = authenticate(request, username=username, password=password)
            if user is not None:
                if user.is_active:
                    login(request, user)
                    return HttpResponse('Authenticated sucessfully')
                else:
                    return HttpResponse('Disable account')
            else:
                return HttpResponse('Invalid Login')
    else:
        form = Person()
        return render(request, 'login2.html', {'form': form})

from django import forms
from .models import Loginteste

class Person(forms.ModelForm):
    class Meta:
        model = Loginteste
        fields = ['username', 'password']

from django.db import models

class Loginteste(models.Model):
    username = models.CharField(max_length=50, blank=True, null=True)
    password = models.CharField(max_length=50, blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'loginteste'

from .models import Loginteste

class MyBackend:
    def authenticate(self, request, username=None, password=None):
        user = Loginteste.object.get(username=username)
        if user.check_password(password):
            return (request, user)

from django.contrib.auth.models import User
from .models import Loginteste

class MyAuthBackend:
    def authenticate(self, request, username=None, password=None):
        if username is None or password is None:
            # nothing to do
            return None

        # get 'User' object
        try:
            usr = User.objects.get(username=username)
        except User.DoesNotExist:
            return None

        # get 'Loginteste' object
        try:
            loginteste = Loginteste.objects.get(username=username)
        except Loginteste.DoesNotExist:
            return None

        # authenticate user
        if not loginteste.check_password(password):
            # incorrect password
            return None

        return usr

    def get_user(self, pk):
        try:
            return User.objects.get(pk=pk)
        except User.DoesNotExist:
            pass

        return None

AUTHENTICATION_BACKENDS = [
    'project_config.auth_backends.MyAuthBackend',
    # 'django.contrib.auth.backends.ModelBackend',
]

---

---

唯一相对简单的选择是使用model

Loginteste

作为自定义用户模型。其他一切都涉及覆盖大量Djangos代码以使其正常工作。

您阅读过关于的文档吗？如果您没有将第二个数据库（帮助台）添加到项目中，您可以查看。是的，Ralf，我在自定义后端阅读了此文档，但我无法开发逻辑，因为我对该工具知之甚少，我看过一些教程和其他东西，但没有一个真正关注我的问题，每个人都使用“用户”。好的，那么，你能更具体地说明什么不起作用吗？你有错误吗？并添加导致问题的代码部分。这不是错误，可能是缺乏经验。我将用代码编辑我的问题。现在我明白了。每次你给一个选择，更新，删除，我会做一个不同的后端吗？我不明白你的评论。您将拥有此后端，每个

Loginteste

对象都必须有其相应的

User

实例。如果某个

Loginteste

实例还没有相应的

User

，您甚至可以修改auth后端来创建一个

User

实例。对不起，我不知道如何提问。要执行选择、更新和删除操作，我必须执行其他后端和custons用户模型，还是只是正常执行视图？拉尔夫，我将

“project.auth\u backend.MyAuthBackend”

放在

“AUTHENTICATION\u backends”

中，但即使我免除了该应用程序，也会出现以下错误：<代码>导入错误：没有名为“HelpDesk.auth\u backend”的模块。