Question

我正在使用Django 1.8.3和Python 3.4，在点击我网站上的链接时，我面临以下问题。

这是错误页面：
http://nest.azurewebsites.net/elasticsearch-net/handling-responses.html

项目目录：

* cacademy:
    * __pycache__
    * __init__
    * settings
    * urls
    * wsgi
* Classes:
    * __pycache__
    * migrations
    * static
    * __init__
    * admin
    * models
    * tests
    * urls
    * views
* templates:
    * cacademy:
        * base.html
        * classes_list.html
        * courses_detail.html
* db.sqlite3
* manage.py

我的模特：

from django.db import models
from django.utils import timezone


class Course(models.Model):
    title = models.CharField(max_length=200)
    text = models.TextField()
    teachername = models.TextField(max_length=200)
    teacherinfo = models.TextField()
    started_date = models.DateTimeField(default=timezone.now)

    def __str__(self):
        return self.title

我的观点：

from django.shortcuts import render
from django.utils import timezone
from .models import Course
from django.shortcuts import render, get_object_or_404

def classes_list(request):
    courses = Course.objects.filter(started_date__lte=timezone.now()).order_by('started_date')
    return render(request, 'cacademy/classes_list.html', {'courses': courses})

def course_detail(request, pk):
    course = get_object_or_404(Course, pk=pk)
    return render(request, 'cacademy/courses_detail.html', {'course': course})

我的网址：

from django.conf.urls import include, url
from Classes import views
from django.contrib import admin
admin.autodiscover()

urlpatterns = [
    url(r'^admin/', include(admin.site.urls)),
    url(r'^$', views.classes_list, name='classes_list'),
    url(r'^(?P<pk>[0-9]+)/Course/$', views.course_detail, name='Course_detail'),
    ]

classes_list.html：

 {% extends "cacademy/base.html" %}
 {% load staticfiles %}
 {% block content %}
         <div>
             <h2> Remember you can only register 3 Courses at once!</h2>
         </div>
     {% for course in courses %}
         <div course="post">
                 <div course="date">
                     {{ course.started_date }}
                 </div>
             <h1><a href="{% url 'course_detail' pk=Course.pk %}">{{ course.title }}</a></h1>
             <p>Taught by: {{ course.teachername|linebreaks }}</p>
         </div>
     {% endfor %}
 {% endblock content %}

Answer 1

将模板网址标记更改为

{% url 'course_detail' course.id %}

并在你的urls.py

中

url(r'^(?P<pk>[0-9]+)/course/$', views.course_detail, name='course_detail')

Answer 2

首先，您已在Course_detail中为课程明细网址指定了反向名称urls.py，但您在模板中使用反向名称course_detail。它应该是模板中的Course_detail。

其次，您将pk作为Course.pk传递到模板中。它应该是course.pk，而不是在迭代course个对象时使用courses变量。

而是使用带有小写首字母的反向名称来删除区分大小写的问题。

<强> urls.py

from django.conf.urls import include, url
from Classes import views
from django.contrib import admin
admin.autodiscover()

urlpatterns = [
    url(r'^admin/', include(admin.site.urls)),
    url(r'^$', views.classes_list, name='classes_list'),
    url(r'^(?P<pk>[0-9]+)/Course/$', views.course_detail, name='course_detail'), # assign reverse name with lowercase initial letter
    ]

然后在您的模板中，您可以执行此操作：

<强> classes_list.html

{% extends "cacademy/base.html" %}
 {% load staticfiles %}
 {% block content %}
         <div>
             <h2> Remember you can only register 3 Courses at once!</h2>
         </div>
     {% for course in courses %}
         <div course="post">
                 <div course="date">
                     {{ course.started_date }}
                 </div>
             <h1><a href="{% url 'course_detail' pk=course.pk %}">{{ course.title }}</a></h1>
             <p>Taught by: {{ course.teachername|linebreaks }}</p>
         </div>
     {% endfor %}
 {% endblock content %}

Django错误NoReverseMatch

2 个答案: