基于 django 的 auth 写一个登录和注册模块 点击注册后将信息写入数据库并提示注册成功 登录时提示登录成功或失败

好的，下面是一个基于 Django 的 auth 的登录和注册模块的示例代码：

### urls.py

from django.urls import path
from . import views

app_name = 'accounts'

urlpatterns = [
    path('login/', views.user_login, name='login'),
    path('logout/', views.user_logout, name='logout'),
    path('register/', views.user_register, name='register'),
]

### views.py

from django.shortcuts import render, redirect
from django.contrib.auth import authenticate, login, logout
from django.contrib import messages
from .forms import UserLoginForm, UserRegistrationForm

def user_login(request):
    if request.method == 'POST':
        form = UserLoginForm(request.POST)
        if form.is_valid():
            cd = form.cleaned_data
            user = authenticate(request, username=cd['username'], password=cd['password'])
            if user is not None:
                if user.is_active:
                    login(request, user)
                    messages.success(request, '登录成功！')
                    return redirect('blog:post_list')
                else:
                    messages.error(request, '账户被禁用！')
                    return redirect('accounts:login')
            else:
                messages.error(request, '无效的用户名或密码！')
                return redirect('accounts:login')
    else:
        form = UserLoginForm()
    return render(request, 'accounts/login.html', {'form': form})

def user_logout(request):
    logout(request)
    messages.success(request, '注销成功！')
    return redirect('blog:post_list')

def user_register(request):
    if request.method == 'POST':
        user_form = UserRegistrationForm(request.POST)
        if user_form.is_valid():
            new_user = user_form.save(commit=False)
            new_user.set_password(user_form.cleaned_data['password'])
            new_user.save()
            messages.success(request, '注册成功！请登录。')
            return redirect('accounts:login')
    else:
        user_form = UserRegistrationForm()
    return render(request, 'accounts/register.html', {'user_form': user_form})

### forms.py

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

class UserLoginForm(forms.Form):
    username = forms.CharField()
    password = forms.CharField(widget=forms.PasswordInput)

class UserRegistrationForm(forms.ModelForm):
    password = forms.CharField(label='密码', widget=forms.PasswordInput)
    password2 = forms.CharField(label='重复密码', widget=forms.PasswordInput)

    class Meta:
        model = User
        fields = ('username', 'first_name', 'last_name', 'email')

    def clean_password2(self):
        cd = self.cleaned_data
        if cd['password'] != cd['password2']:
            raise forms.ValidationError('两次输入的密码不匹配！')
        return cd['password2']

以上是一个基于 Django 的 auth 的登录和注册模块的示例代码，你可以根据自己的需求进行修改和扩展。在注册和登录成功或失败的情况下，我们使用了 Django 内置的 messages 库，可以在模板中以 Bootstrap 的样式显示提示信息。