djjango cookie和session 的几种常用需求使用方法

------https://www.cnblogs.com/liuqingzheng/articles/8990027.html

需求情形一：正常设置cookie

set_cookie（key,value,max_age,expires,path,domain,secure,httponly）

def test_cookie_login(request):
    if request.method == 'POST':
        name = request.POST.get('name')
        pwd = request.POST.get('pwd')
        if name == 'wudi' and pwd == '':
            obj = redirect('index')
            obj.set_cookie('is_login',True)
            obj.set_cookie('name',name)
            return obj
    return render(request,'test.html')

def index(request):
    print(request.COOKIES)
    is_login = request.COOKIES.get('is_login')
    if is_login:
        return render(request,'index.html',{'name':name})
    else:
        return redirect('/test_cookie_login')

删除cookie

@login_auth
def index(request):
    name = request.COOKIES.get('name')
    obj.render(request,'index.html',{'name':name})
    obj.delete_cookie('is_login')
    return obj

需求情形二：设置cookie在装饰器里

def login_auth(func):
    def inner(request,*args,**kwargs):
        is_login = request.COOKIES.get('is_login')
        if is_login:
            return func(request,*args,**kwargs)
        else:
            return redirect('/test_cookie_login/')
    return inner

@login_auth
def index(request):
    name = request.COOKIES.get('name')
    return render(request,'index.html',{'name':name})

def test_cookie_login(request):
    if request.method == 'POST':
        name = request.POST.get('name')
        pwd = request.POST.get('pwd')
        if name == 'wudi' and pwd == '':
            obj = redirect('index')
            obj.set_cookie('is_login',True)
            obj.set_cookie('name',name)
            return obj
    return render(request,'test.html')

需求情形三:为了使得已经键入登录index.html但却未登录，登录成功之后直接跳转到index.html，设置cookie里加入URL

def login_auth(func):
    def inner(request,*args,**kwargs):
        is_login = request.COOKIES.get('is_login')
        #为了使得已经键入登录index.html但却未登录，登录成功之后直接跳转到index.html
        next_url = request.get_full_path()
        if is_login:
            return func(request,*args,**kwargs)
        else:
            return redirect('/test_cookie_login/?next=%s'%next_url)
    return inner

@login_auth
def index(request):
    name = request.COOKIES.get('name')
    return render(request,'index.html',{'name':name})

def test_cookie_login(request):
    if request.method == 'POST':
        name = request.POST.get('name')
        pwd = request.POST.get('pwd')
        # 为了使得已经键入登录index.html但却未登录，登录成功之后直接跳转到index.html
        url = request.GET.get('next')
        if name == 'wudi' and pwd == '':
            obj = redirect(url)
            obj.set_cookie('is_login',True)
            obj.set_cookie('name',name)
            return obj
    return render(request,'test.html')