Django实现简单登录的示例代码

urlpatterns = [
    path('admin/', admin.site.urls),
    path('', include('newsModel.urls'))
]

from django.urls import path
from . import views

urlpatterns = [
    path('', views.login, name='login')
]

def login(request):
    return render(request, 'login.html')

STATICFILES_DIRS = [     os.path.join(BASE_DIR, "static") ]

path('/register', views.register, name='register')

<a class="text-primary" href="{% url 'register' %}" rel="external nofollow" >Sign up</a>

import pymysql
pymysql.install_as_MySQLdb()

class user(models.Model):
    username = models.CharField(max_length=30)
    password = models.CharField(max_length=30)
    email = models.EmailField(unique=True, blank=False)

python manage.py migrate
python manage.py makemigrations
python manage.py migrate newsModel

def toLogin(request):
    if request.method == 'POST':
        username = request.POST.get("username")
        password = request.POST.get("password")
        users = user.objects.all()
        for u in users:
            if u.username == username and u.password == password:
                return redirect("home")
        context = {"msg": "用户名或密码错误！"}
        return render(request, "login.html", context)

data = eval("(" + data + ")"); 灰常重要，记得转换一下，不然取不到，但好像别人不用转也可以。。。。
$.ajax({
    type: 'POST',
    url: "{% url 'toLoginByAjax' %}",
    data: {
        'username': $("#username").val(),
        'password': $("#password").val()
    },
    dataType: 'text',
    success: function (data) {
        data = eval("(" + data + ")");
        if (data.code == 0){
            window.location.href = "{% url 'home' %}"
        } else {
            $(".msg").html(data.msg);
                setTimeout(function(){//定时器
                $(".msg").css("display","none");//将图片的display属性设置为none
            },3000);//设置三千毫秒即3秒
        }
    },
    error: function () {
        console.log("somewhere is wrong")
    }
  })  

def toLoginByAjax(request):
    username = request.POST.get("username")
    password = request.POST.get("password")
    users = user.objects.all()
    for u in users:
        if u.username == username and u.password == password:
            message = {"code": 0, "msg": "登陆成功!"}
            return JsonResponse(message)
    message = {"code": 400, "msg": "登陆失败，用户名或密码错误!"}
    return JsonResponse(message)