用户登出和dashboard

示例

from django.shortcuts import render
from django.contrib.auth import authenticate,login,logout
from django.http import HttpResponse,JsonResponse,HttpResponseRedirect
from django.urls import reverse

# Create your views here.
def login_view(request):
    if request.method=="GET":
        return render(request,"public/login.html")
    else:
        username=request.POST.get("username","")#给一个空的默认值防止报错
        userpass=request.POST.get("password","")#
        print(username,userpass)
        user = authenticate(username=username,password=userpass)
        ret = {"status":0,"errmsg":""} #定义一个输出，字典转成json格式传给前端，json格式对于前端js就是一个对象可以进行处理，定义status=0为正常
        if user:
            login(request,user)
#            return HttpResponse("用户登录成功")
            ret['next_url'] = request.GET.get("next") if request.GET.get("next",None) else "/dashboard"
        else:
            ret['status'] = 1
            ret['errmsg']="用户名或密码错误，请联系管理员"
        return JsonResponse(ret)
def logout_view(request):   #退出登录
    logout(request)
    return HttpResponseRedirect(reverse("user_login")) #reverse 把url的名字转换成url

url配置

from django.conf.urls import include, url
from . import views
urlpatterns = [
url(r'^login/$', views.login_view, name='user_login'),
url(r'^logout/$', views.login_view, name='user_logout'),
url(r'^user/list/$', views.login_view, name='user_list'),
]

　dashboard的配置

from django.shortcuts import render

# Create your views here.
from django.http import HttpResponse,JsonResponse
from django.template import Context,loader
from django.contrib.auth.decorators import login_required
@login_required   #首页认证
def index(request):
	return render(request,"index.html")

　1.函数视图

　　接收一个request参数(HttpRequest)　

　　返回一个HttpResponse对象

　2.QueryDict对象

　　GET/POST

　　get请求数据放在request.GET里面  

　　post请求数据放在request.POST里面

例如  ?a=1&b=2&b=3

取值方法:  request.GET.get("a")   request.GET.get("b"),

request.POST.get("a")   request.POST.get("b"),