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from django.shortcuts import render, HttpResponse, redirect
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# Create your views here.
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def login(request):
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    if request.method == 'POST':
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        username = request.POST.get('username')
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        password = request.POST.get('password')
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        if username == "dream" and password == "521":
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            # 登陆成功之后，保存用户登陆状态
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            obj = redirect('/home/')
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            # 让浏览器记录cookie
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            obj.set_cookie("sign", "1314521")
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            '''
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            浏览器不单单只是帮我们保存cookie
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            而且在后面每次访问的时候都会带着cookie
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            '''
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            # 登陆成功之后，跳转到登陆成功之后才能看到的页面
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            return obj
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    return render(request, 'login.html')
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def home(request):
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    # 读取携带的cookie，cookie正确登陆成功
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    if request.COOKIES.get("sign") == "1314521":
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        return HttpResponse("登陆成功！")
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    # 读取携带的cookie，cookie不正确跳转到登陆页面
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    return redirect('/login/')

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from django.shortcuts import render, HttpResponse, redirect
2

3

4
# Create your views here.
5
def login(request):
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    if request.method == 'POST':
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        username = request.POST.get('username')
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        password = request.POST.get('password')
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        if username == "dream" and password == "521":
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            # 获取用户上一次想要访问的url
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            # 结果可能为空 -- 直接访问login
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            tag_url = request.GET.get('tag_url')
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            if tag_url:
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                obj = redirect(tag_url)
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            else:
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                # 登陆成功之后，保存用户登陆状态
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                obj = redirect('/home/')
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            # 让浏览器记录cookie
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            obj.set_cookie("sign", "1314521")
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            '''
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            浏览器不单单只是帮我们保存cookie
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            而且在后面每次访问的时候都会带着cookie
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            '''
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            # 登陆成功之后，跳转到登陆成功之后才能看到的页面
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            return obj
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    return render(request, 'login.html')
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# 校验用户登录状态的装饰器
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def auth_check(func):
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    def inner(request, *args, **kwargs):
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        # 获取到用户上一次想要访问的url
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        tag_url = request.get_full_path()
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        # 读取携带的cookie，cookie正确登陆成功
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        if request.COOKIES.get("sign") == "1314521":
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            res = func(request, *args, **kwargs)
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            return res
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        else:
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            # 读取携带的cookie，cookie不正确跳转到登陆页面
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            return redirect(f'/login/?next={tag_url}')
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    return inner
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@auth_check
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def home(request):
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    return HttpResponse("home登陆成功！")
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@auth_check
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def index(request):
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    return HttpResponse("index登陆成功！")
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@auth_check
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def func(request):
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    return HttpResponse("func登陆成功！")