使用Django处理HTML表单数据与用户注册实现教程

<!-- templates/signupPage.html -->
<form id="signup-form" action="{% url 'user-signup' %}" method="post">
    {% csrf_token %} {# 这是Django特有的CSRF令牌，非常重要 #}

    <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="emailAdress" 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.shortcuts import render, redirect
from django.contrib.auth.models import User
from django.contrib.auth import login
from django.contrib import messages # 可选：用于显示消息

def signUpView(request, *args, **kwargs):
    if request.method == "POST":
        # 1. 从POST请求中提取数据
        username = request.POST.get("username")
        email_address = request.POST.get("emailAdress") # 注意与HTML中的name属性一致
        password = request.POST.get("password")
        password_confirm = request.POST.get("passwordCon")
        phone_number = request.POST.get("phone") # 可选字段

        # 2. 基本数据验证 (这里仅作简单示例，实际项目中应更完善)
        if not (username and email_address and password and password_confirm):
            messages.error(request, "请填写所有必填字段。")
            return render(request, "signupPage.html")

        if password != password_confirm:
            messages.error(request, "两次输入的密码不一致。")
            return render(request, "signupPage.html")

        if User.objects.filter(username=username).exists():
            messages.error(request, "该用户名已被注册。")
            return render(request, "signupPage.html")

        if User.objects.filter(email=email_address).exists():
            messages.error(request, "该邮箱已被注册。")
            return render(request, "signupPage.html")

        try:
            # 3. 创建用户实例并保存到数据库
            # 使用Django内置的User模型
            user = User.objects.create_user(username=username, email=email_address, password=password)
            # 如果有其他字段，可以在这里设置，例如：
            # user.first_name = "..."
            # user.last_name = "..."
            # user.profile.phone_number = phone_number # 假设有UserProfile模型关联
            user.save()

            # 4. 自动登录新注册的用户
            login(request, user)

            # 5. 重定向到成功页面
            return redirect("homepage") # 假设有一个名为'homepage'的URL
        except Exception as e:
            messages.error(request, f"注册失败：{e}")
            return render(request, "signupPage.html")

    else:
        # 如果是GET请求，渲染注册表单页面
        return render(request, "signupPage.html")