Django自定义Clients模型登录注册功能异常求助

核心问题分析 #

你的代码存在多个不符合Django认证系统规范的问题，直接导致功能失效：

• 自定义Clients模型未集成Django认证基类，authenticate()和login()无法识别该模型
• 注册时明文存储密码，authenticate()无法验证加密后的密码（Django默认用PBKDF2加密）
• 登录视图中已登录用户分支的redirect('/')未加return，导致不会跳转
• 登录表单login_client是forms.Form类型，冗余配置了仅ModelForm需要的Meta类

分步修复方案 #

1. 修改Clients模型（models.py） #

让模型继承Django认证系统的基类，实现认证所需的字段和方法：

from django.db import models
from django.contrib.auth.models import AbstractBaseUser, BaseUserManager, PermissionsMixin

class ClientManager(BaseUserManager):
    def create_user(self, email, username, first_name, last_name, password=None):
        if not email:
            raise ValueError('Users must have an email address')
        if not username:
            raise ValueError('Users must have a username')
        
        user = self.model(
            email=self.normalize_email(email),
            username=username,
            first_name=first_name,
            last_name=last_name,
        )
        user.set_password(password)
        user.save(using=self._db)
        return user

    def create_superuser(self, email, username, first_name, last_name, password):
        user = self.create_user(
            email,
            password=password,
            username=username,
            first_name=first_name,
            last_name=last_name,
        )
        user.is_admin = True
        user.is_staff = True
        user.is_superuser = True
        user.save(using=self._db)
        return user

class Clients(AbstractBaseUser, PermissionsMixin):
    created_at     = models.DateField(auto_now_add=True)
    idClient       = models.AutoField(primary_key=True)
    first_name     = models.CharField(max_length=80)
    last_name      = models.CharField(max_length=80)
    email          = models.EmailField(max_length=120, unique=True)
    username       = models.CharField(max_length=120, unique=True)
    is_active      = models.BooleanField(default=True)
    is_staff       = models.BooleanField(default=False)
    is_admin       = models.BooleanField(default=False)

    USERNAME_FIELD = 'email'  # 设置登录验证用的字段
    REQUIRED_FIELDS = ['username', 'first_name', 'last_name']

    objects = ClientManager()

    def __str__(self):
        return self.username

2. 配置项目settings.py #

添加自定义用户模型的全局配置（替换your_app_name为实际应用名称）：

AUTH_USER_MODEL = 'your_app_name.Clients'

3. 优化表单与视图逻辑 #

forms.py：修复表单冗余配置，添加密码加密与验证

from django import forms
from .models import Clients

class addNewClient(forms.ModelForm):
    email       = forms.EmailField(label="Email", widget=forms.TextInput(attrs={"class":"form-control", "placeholder":"Ex : JhonWick@gmail.com"}))
    first_name  = forms.CharField(label="First Name ", widget= forms.TextInput(attrs={"class":"form-control", "placeholder":"Ex : Jhon"}))
    last_name   = forms.CharField(label="Last Name", widget=forms.TextInput(attrs={"class":"form-control", "placeholder":"Ex : Wick"}))
    username    = forms.CharField(label='Username',widget=forms.TextInput(attrs={"class":"form-control", "placeholder":"Ex : JhonWick"}))
    password    = forms.CharField(label="Password", widget=forms.PasswordInput(attrs={"class":"form-control", "placeholder":"Ex : 32FFdl@d"}))
    password2   = forms.CharField(label="Confirm Password", widget=forms.PasswordInput(attrs={"class":"form-control"}))

    class Meta :
        model = Clients
        fields = ['username', 'first_name', 'last_name', 'email']

    def clean_password2(self):
        password = self.cleaned_data.get('password')
        password2 = self.cleaned_data.get('password2')
        if password and password2 and password != password2:
            raise forms.ValidationError("Passwords don't match")
        return password2

    def save(self, commit=True):
        user = super().save(commit=False)
        user.set_password(self.cleaned_data["password"])
        if commit:
            user.save()
        return user

class login_client(forms.Form):
    email = forms.EmailField(widget=forms.TextInput(attrs={"class":"form-control"}))
    password = forms.CharField(widget=forms.PasswordInput(attrs={"class":"form-control"}))

views.py：修复登录视图跳转问题，添加错误提示

from django.shortcuts import render, redirect
from django.contrib.auth import authenticate, login
from django.contrib import messages
from .forms import addNewClient, login_client

def login_user(request):
    if request.user.is_authenticated:
        messages.success(request, "You are Already logged in ")
        return redirect('/')
    else:
        if request.method == 'POST': 
            form = login_client(request.POST)
            if form.is_valid():
                email = form.cleaned_data['email']
                password = form.cleaned_data['password']
                client = authenticate(request, email=email, password=password)
                if client is not None:
                    login(request, client)
                    messages.success(request, "Login successful!")
                    return redirect("/")
                else:
                    messages.error(request, "Invalid email or password")
        else :
            form = login_client()
        return render(request, 'Login.html', {"form":form})

def register_user(request):
    if request.user.is_authenticated:
        messages.success(request, "You are Already logged in")
        return redirect("/")
    else :
        if request.method == 'POST':
            form = addNewClient(request.POST)
            if form.is_valid():
                user = form.save()
                messages.success(request, "Registration successful! Please login.")
                return redirect('login')
            else:
                for field, errors in form.errors.items():
                    for error in errors:
                        messages.error(request, f"{field}: {error}")
        else :
            form = addNewClient()
        return render(request, 'signup.html', {"form":form})

4. 执行数据库迁移 #

修改模型后需重新生成并执行迁移：

python manage.py makemigrations
python manage.py migrate

内容的提问来源于stack exchange，提问作者lsao