登录后django重定向不工作"下一步"不发布？

Question

我有一个正常工作的登录页面,但重定向到引用页面除外.用户在应用程序中收到带有直接链接的电子邮件,他们(在此示例中)尚未登录并被重定向到登录页面.成功登录后,用户将被重定向到硬编码路径.见下面的例子.

电子邮件中的URL: http://localhost:8000/issueapp/1628/view/22

登录页面的URL: http://localhost:8000/login?next=/issueapp/1628/view/22

登录视图(带硬编码重定向):

def login_user(request):    
    state = "Please log in below..."
    username = password = ''

    if request.POST:
        username = request.POST['username']
        password = request.POST['password']

        user = authenticate(username=username, password=password)
        if user is not None:
            if user.is_active:
                login(request, user)
                state = "You're successfully logged in!"
                return HttpResponseRedirect('/issueapp/1628/')
            else:
                state = "Your account is not active, please contact the site admin."
        else:
            state = "Your username and/or password were incorrect."

    return render_to_response(
        'account_login.html',
        {
        'state':state,
        'username': username
        },
        context_instance=RequestContext(request)
    )

登录视图(带有"下一步"重定向):

def login_user(request):    
    state = "Please log in below..."
    username = password = ''

    if request.POST:
        username = request.POST['username']
        password = request.POST['password']

        user = authenticate(username=username, password=password)
        if user is not None:
            if user.is_active:
                login(request, user)
                state = "You're successfully logged in!"
                return HttpResponseRedirect(request.GET['next'])
            else:
                state = "Your account is not active, please contact the site admin."
        else:
            state = "Your username and/or password were incorrect."

    return render_to_response(
        'account_login.html',
        {
        'state':state,
        'username': username
        },
        context_instance=RequestContext(request)
    )

上面的视图导致异常"Key 'next' not found in <QueryDict: {}>"表单似乎没有发布"下一个"变量,即使它位于url和表单中.我搜索过,到处寻找,无法弄清楚为什么它不起作用.有任何想法吗？

附加参考:

登录模板:

{% block content %}

    {{ state }}
    <form action="/login/" method="post" >
                {% csrf_token %}
        {% if next %}
        <input type="hidden" name="next" value="{{ next }}" />
        {% endif %}
        username:
        <input type="text" name="username" value="{{ username }}" /><br />
        password:
        <input type="password" name="password" value="" /><br />

        <input type="submit" value="Log In"/>

        {% debug %}
    </form>
{% endblock %}

编辑:以下是现在为我工作的代码(感谢Paulo Bu的帮助)!**

登录视图:

def login_user(request):

    state = "Please log in below..."
    username = password = ''

    next = ""

    if request.GET:  
        next = request.GET['next']

    if request.POST:
        username = request.POST['username']
        password = request.POST['password']

        user = authenticate(username=username, password=password)
        if user is not None:
            if user.is_active:
                login(request, user)
                state = "You're successfully logged in!"
                if next == "":
                    return HttpResponseRedirect('/issueapp/')
                else:
                    return HttpResponseRedirect(next)
            else:
                state = "Your account is not active, please contact the site admin."
        else:
            state = "Your username and/or password were incorrect."

    return render_to_response(
        'account_login.html',
        {
        'state':state,
        'username': username,
        'next':next,
        },
        context_instance=RequestContext(request)
    )

登录模板:

{{ state }}

{% if next %}
<form action="/login/?next={{next}}" method="post" >
{%else%}
<form action="/login/" method="post" >
{% endif %}

            {% csrf_token %}

    username:
    <input type="text" name="username" value="{{ username }}" /><br />
    password:
    <input type="password" name="password" value="" /><br />

    <input type="submit" value="Log In"/>

    {% debug %}
</form>

Answer 1

您的代码很好,唯一的问题是在表单中您将next属性作为帖子传递,因为方法是post.在视图中,您尝试获取字典中的next参数,get这显然不存在.

您必须声明这样的html表单action才能使您的视图正常工作.

{% if next %}
<form action="/login/?next={{next}}" method="post" >
{%else%}
<form action="/login/" method="post" >
{% endif %}
        {% csrf_token %}
        username:
        <input type="text" name="username" value="{{ username }}" /><br />
        password:
        <input type="password" name="password" value="" /><br />

        <input type="submit" value="Log In"/>

        {% debug %}
    </form>

在那里,如果有一个next变量,那么你在urlfor中包含它作为get参数检索它.如果没有,表格不包括它.

这是最好的方法,但您也可以通过next从POST字典中请求以下内容来修复此视图:

return HttpResponseRedirect(request.POST.get('next'))

请注意,这仅在模板account_login 具有调用的变量时才有效next.您应该在视图中生成它并在渲染时将其传递给模板.

通常,在模板中你会做这样的事情:

# this would be hardcoded
next = '/issueapp/1628/view/22'
# you may add some logic to generate it as you need.

然后你做:

return render_to_response(
    'account_login.html',
    {
    'state':state,
    'username': username,
    'next':next
    },
    context_instance=RequestContext(request)
)

希望这可以帮助!

Answer 2

简而言之

我会在你的视图函数中定义next_page = request.GET['next']然后重定向到它,return HttpResponseRedirect(next_page)所以你永远不需要更改模板; 刚设置@login_required,你很好.

例如:

用户A尝试访问 - 但未登录 - https://www.domain.tld/account/.Django重定向他,因为@login_required设置为LOGIN_URLsettings.py中定义的.如果用户A成功登录,该方法UserLogin现在尝试参数并重定向到GET该next参数.

settings.py

LOGIN_URL = '/login/'

urls.py

url(r'^account/', account, name='account'),
url(r'^login/$', UserLogin, name='login'),

views.py

@login_required
def account(request):
    return HttpResponseRedirect("https://www.domain.tld/example-redirect/")

def UserLogin(request):
    next_page = request.GET['next']
    if request.user.is_authenticated():
        return HttpResponseRedirect(next_page)
    else:
        if request.method == 'POST':
            if form.is_valid():
                username = form.cleaned_data['username']
                password = form.cleaned_data['password']
                user = authenticate(email=username, password=password)
                if user is not None and user.is_active:
                    login(request, user)
                    return HttpResponseRedirect(next_page)
                else:
                    error_msg = 'There was an error!'
                    return render(request, "login", {'form': form, 'error_msg': error_msg})
            else:
                error_msg = "There was an error!"
                return render(request, "login", {'form':form, 'error_msg':error_msg})
        else:
            form = UserLoginForm()
            return render(request, "login", {'form': form})

Answer 3

就放

<form action="" method="post" >

空动作' what ever current complete url is'