Django—用户认证系统（验证登录，注册）

验证登录
注册

验证登录

def index(request):
    # 在后端判断是否登录
    print(request.user.is_authenticated)
    return render(request,'index.html')

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
{% if request.user.is_authenticated %}
    {{ request.user.username }}  <a href="{% url 'App02:logout' %}">退出登录</a>
{% else %}
    你还没有登录，请先 <a href="{% url 'App02:login' %}">登录</a>
{% endif %}
</body>
</html>

注册

def user_register(request):
    if request.method == "POST":
        form = RegisterForm(request.POST)
        if form.is_valid():
            data = form.cleaned_data
            data.pop("confirm")
            # 把用户写入数据库
            # 密码会做签名，不能手动签名加密password
            user = User.objects.create_user(**data)
            if user:
                return HttpResponse("注册成功")
            else:
                return render(request, "register.html",{'form':form})
        else:
            return render(request, "register.html", {'form': form})
    # get请求
    return render(request, "register.html")

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>注册</title>
</head>
<body>
<form action="{% url 'App02:user_register' %}" method="post">
    {% csrf_token %}
    用户名：<input type="text" name="username">
    {% for error in form.username.errors %}
        <span>{{ error }}</span>
    {% endfor %}
    <br>
    密码：<input type="password" name="password">
    {{ form.password.errors }}
    <br>
    确认密码：<input type="password" name="confirm">
     {{ form.confirm.errors }}
    <br>
    注册时间：<input type="text" name="regtime">
     {{ form.regtime.errors }}
    <br>
    性别：<input type="radio" name="sex" value="0">女
    <input type="radio" name="sex" value="1"> 男
     {{ form.sex.errors }}
    <br>
    <input type="submit" value="注册">
</form>
</body>
</html>

from django import  forms
from django.core.exceptions import ValidationError
from django.forms.utils import ErrorList


class RegisterForm(forms.Form):
    def __init__(self, data=None, files=None, auto_id='id_%s', prefix=None,
                 initial=None, error_class=ErrorList, label_suffix=None,
                 empty_permitted=False, field_order=None, use_required_attribute=None, renderer=None,request=None):
        super().__init__(data,files,auto_id,prefix,label_suffix,empty_permitted,field_order,use_required_attribute,renderer)
        self.request = request

    username = forms.CharField(min_length=3,required=True,error_messages={
        'required':'用户名必须输入',
        'min_length':'用户名至少3个字符'
    })
    password = forms.CharField(min_length=3,required=True,error_messages={
        'required': '密码名必须输入',
        'min_length': '密码至少3个字符'
    })
    confirm = forms.CharField(min_length=3,required=True,error_messages={
        'required': '密码名必须输入',
        'min_length': '密码至少3个字符'
    })
    regtime = forms.DateTimeField(required=False,error_messages={
        'invalid':'日期格式错误',
    })
    sex = forms.BooleanField(required=False)

    # 单个字段验证: clean_xxxx
    def clean_password(self):
        password = self.cleaned_data.get('password')
        if password and password.isdigit():
            raise ValidationError("密码不能是纯数字")
        return password


    # 全局验证
    def clean(self):
        password = self.cleaned_data.get('password',None)
        confirm = self.cleaned_data.get('confirm','')
        print(password,confirm)
        if password != confirm:
            raise ValidationError({'confirm':"两次密码输入不一致"})
        return self.cleaned_data

Jhinhua

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Django—用户认证系统（验证登录，注册）

验证登录

注册

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