Django中HTML表单数据提取与用户注册教程

<form id="signup-form" action="{% url 'user-signup' %}" method="post">
    {% csrf_token %} {# Django CSRF 令牌，用于安全防护 #}

    <label for="name">全名</label>
    <input autocomplete="off" type="text" name="username" id="name" class="name">

    <label for="email">电子邮件地址</label>
    <input autocomplete="off" type="email" name="emailAddress" id="email" class="email">

    <label for="phone">电话号码 - <small>可选</small></label>
    <input autocomplete="off" type="text" name="phone" id="phone">

    <label for="password">密码</label>
    <input autocomplete="off" type="password" name="password" id="password" class="pass">

    <label for="passwordCon">确认密码</label>
    <input type="password" name="passwordCon" id="passwordCon" class="passConfirm">

    <input type="submit" form="signup-form" value="立即注册" id="submit">
</form>

# your_app_name/urls.py
from django.urls import path
from . import views

urlpatterns = [
    path("signup/", views.signUpView, name="user-signup"),
]

# your_app_name/views.py
from django.contrib.auth.models import User # 导入Django内置User模型
from django.contrib.auth import login # 导入登录函数
from django.shortcuts import render, redirect # 导入渲染和重定向函数

def signUpView(request, *args, **kwargs):
    if request.method == "POST":
        # 1. 从POST请求中提取表单数据
        username = request.POST.get("username")
        email_address = request.POST.get("emailAddress") # 注意这里是emailAddress
        password = request.POST.get("password")
        # password_confirm = request.POST.get("passwordCon") # 如果需要确认密码，也应提取并验证

        # 2. 基本的数据验证（此处仅为示例，实际应用中需更完善）
        if not username or not email_address or not password:
            # 可以添加错误消息并重新渲染表单
            return render(request, "signupPage.html", {'error_message': '所有必填字段都不能为空。'})

        # 3. 检查用户是否已存在
        if User.objects.filter(username=username).exists():
            return render(request, "signupPage.html", {'error_message': '该用户名已被占用。'})
        if User.objects.filter(email=email_address).exists():
            return render(request, "signupPage.html", {'error_message': '该邮箱已被注册。'})

        # 4. 创建新用户实例
        # 注意：Django User模型中的邮箱字段名为'email'
        user = User(username=username, email=email_address)

        # 5. 安全地设置用户密码
        # set_password方法会自动对密码进行哈希处理，切勿直接赋值
        user.set_password(password) 

        # 6. 保存用户到数据库
        user.save()

        # 7. 登录新注册的用户（可选）
        login(request, user)

        # 8. 重定向到成功页面或主页
        return redirect("homepage") # 假设你有一个名为'homepage'的URL模式
    else:
        # 如果是GET请求，渲染注册表单页面
        return render(request, "signupPage.html")