Django 我能'；t在/events/Error处解决NoReverseMatch问题

我在添加状态为false的事件时出现此错误。状态为true时没有问题： NoReverseMatch at/events/ 未找到参数为“（“”，）”的“事件详细信息”的反转。尝试了1个模式：[“事件/（？P[^/]+）/$”]

我看不出错误的原因

这是my views.py文件：

from django.shortcuts import render, get_object_or_404
from .models import Event

def event_list(request):
    events_f = Event.objects.filter(status=False)
    events_t = Event.objects.filter(status=True)
    return render(request, 'etkinlik/event_list.html', {'events_f':events_f , 'events_t':events_t})

def event_detail(request, url_sistem):
    event = get_object_or_404(Event, url_sistem=url_sistem)

return render(request, 'etkinlik/event_detail.html',{'event':event})

这是URL.py：

urlpatterns = [
path('', views.event_list, name='event_list'),
path('<str:url_sistem>/', views.event_detail, name='event-detail')
]

urlpatterns=[
路径（“”，views.event_list，name='event_list'），
路径（“/”，views.event_detail，name='event-detail'）
]

和此模板文件：

{% extends 'base.html' %}
    {%block title%}Events | {%endblock%}
{% block content %}

<div class="container mt-4">
    <div class="jumbotron">
        <h4 class="display-4">Öne Çıkarılan Etkinlik</h4>
        <p class="lead mb-5">Bu etkinlik şuandaki en önemli ve popüler etkinliktir. Katılabilen herkesin katılmasını isteriz</p>
        {% if not events_t %}
            <h2>Şu anda öne çıkarılan yok</h2>
        {% else %}
        {% for event_t in events_t %}
        <a href="{% url 'event-detail' event_t.url_sistem %}" style="color:black;">
            <div class="card mb-3" style="max-width:700px;">
                <div class="row no-gutters">
                    <div class="col-md-4">
                        <img src="/media/{{ event_t.img_event }}" class="card-img" alt="etkinlik_foto">
                    </div>
                    <div class="col-md-8">
                        <div class="card-body">
                            <h5 class="card-title">{{event_t.title}}</h5>
                            <p class="card-text">{{event_t.exp}}</p>
                            <p class="card-text"><small class="text-muted">Etkinlik Tarihi: {{event_t.event_date}}</small></p>
                        </div>
                    </div>
                </div>
            </div>
        </a>
        {% endfor %}
        {% endif %}

    </div>

    {% for event_f in events_f %}
    <a href="{% url 'event-detail' event_t.url_sistem %}" style="color:black;">
        <div class="card mb-3" style="max-width:700px;">
            <div class="row no-gutters">
                <div class="col-md-4">
                    <img src="/media/{{ event_f.img_event }}" class="card-img" alt="etkinlik_foto">
                </div>
                <div class="col-md-8">
                    <div class="card-body">
                        <h5 class="card-title">{{event_f.title}}</h5>
                        <p class="card-text">{{event_f.exp}}</p>
                        <p class="card-text"><small class="text-muted">Etkinlik Tarihi: {{event_f.event_date}}</small></p>
                    </div>
                </div>
            </div>
        </div>
    </a>
    {% endfor %}
</div>
{% endblock %}

{%extends'base.html%}
{%block title%}事件{%endblock%}
{%block content%}
Öneıkarılan Etkinlik
Bu etkinlikşuandaki enönemli ve popüler etkinliktir。凯特·拉比伦·赫克辛·凯特·勒马斯·尼斯特里兹（Katılabilen herkesin Katılmasınıisteriz）
{%如果不是事件\u t%}
Şu andaöneıkarılan yok
{%else%}
{events\u t%中event\u t的百分比}
{%endfor%}
{%endif%}
{events_f%}
{%endfor%}
{%endblock%}

提前感谢

<a href="{% url 'event-detail' event_t.url_sistem %}" style="color:black;">

在url中，您需要将

事件url系统

替换为

事件url系统