附加Django请求URL

我访问管理界面并尝试在django中添加支持用户。这是一个带有用户名和电子邮件的表单。表单数据已成功过帐。成功发布请求后,我必须重定向到 127.0.0.1:8000/管理员/授权/用户/ . 然而,在 127.0.0.1:8000/添加\u支持\u用户 如果用户已经存在,则url将如下更改 127.0.0.1:8000/add\u support\u user/add\u support\u user 我再次请求,如果用户已经存在,它是这样的 127.0.0.1:8000/add\u support\u user/add\u support\u user/add\u support\u user (每次追加) support_User_form 当创建新用户时,url会这样更改 127.0.0.1:8000/add\u support\u user/add\u support\u user 所以它显示了500个错误页面 '127.0.0.1:8000/add\u support\u user/add\u support\u user' 不存在 error_page . 我在这里犯了什么错误?

URL。PY公司

 url(r"^add_support_user/", AddSupportUserView.as_view(), name = 'support_user'),

意见。PY公司

class AddSupportUserView(CsrfExemptMixin, View):
def get(self, request):
    form_class = AddSupportUserForm

    return render(request, 'add_support_user.html', {
        'form': form_class,
    })

def post(self, request):
    form_class = AddSupportUserForm

    username = request.POST.get('username')
    email = request.POST.get('email')
    try:
        user_obj = User.objects.get(username=username)
        return render(request, 'add_support_user.html', {'errors': 'User already exits', 'form': form_class})
    except User.DoesNotExist:
        user_obj = User.objects.create_user(username=username, email=email, is_staff=True,
                                            is_superuser=False)
        user_obj.set_password(email)
        user_obj.save()
    group_obj = Group.objects.get(name='support_group')
    user_obj.groups.add(group_obj)
    return HttpResponseRedirect('/admin/auth/user/')

更改\u列表。HTML

{% extends "admin/change_list.html" %} {% block object-tools-items %} {{ 
block.super }}
<li>
<a href="{% url 'support_user' %}" class="grp-state-focus addlink">Add   
Support User</a>
</li>
{% endblock %}

添加\u SUPPORT\u用户。HTML

{% extends 'admin/base.html' %}{% block content %}
<h1>Add Support User</h1>
<form role="form" action="add_support_user/" method="post">
{% csrf_token %}
<label style="color:red;">*{{errors}}</label>
<table>
    {% for field in form %}
    <tbody>
        <tr>
            <td>
                <label for="{{ field.label }}" style="display:inline- 
block;vertical-align:middle">{{ field.label_tag }}</label>
            </td>
            <td>
                {{ field }}
            </td>
        </tr>
        {% endfor %}
    </tbody>
</table>
<br>
<input style="float:left;" type="submit" value="Save" class="default"  
name="_save">
</form>
{% endblock %}