[英]Django 1.7 error NoReverseMatch at '/post/'
我是django的新手。 我在下面遇到錯誤消息異常值。
Reverse for 'category_detail' with arguments '()' and keyword arguments '{u'pk': ''}' not found. 1 pattern(s) tried: ['category/(?P<pk>[0-9]+)/$']
模板渲染過程中出錯
Reverse for 'category_detail' with arguments '()' and keyword arguments '{u'pk': ''}' not found. 1 pattern(s) tried: ['category/(?P<pk>[0-9]+)/$']
排隊:
<li><a href="{% url 'category_detail' pk=category.pk %}/">{{ cat.title }}</a></li>
djangogirls / APSI / urls.py
urlpatterns = patterns('',
url(r'^admin/', include(admin.site.urls)),
url(r'', include('blog.urls')),
)
djangogirls /博客/ urls.py
from django.conf.urls import patterns, include, url
來自。 導入視圖
urlpatterns = patterns('',
url(r'^post/$', views.post_list),
url(r'^category/(?P<pk>[0-9]+)/$', views.category_detail, name='category_detail'),
url(r'^post/(?P<pk>[0-9]+)/$', views.post_detail),
url(r'^post/new/$', views.post_new, name='post_new'),
url(r'^post/(?P<pk>[0-9]+)/edit/$', views.post_edit, name='post_edit'),
)
djangogirls /博客/ views.py
def category_detail(request, pk):
category = Post.objects.filter(category__id=pk)
return render(request, 'blog/category_detail.html', {'category': category})
def post_list(request):
posts = Post.objects.filter(published_date__isnull=False).order_by('published_date')
categories = Category.objects.all()
tags = Tag.objects.all()
return render(request, 'blog/post_list.html', {'posts': posts, 'categories': categories, 'tags':tags })
djangogirls /博客/ models.py
class Category(models.Model):
title = models.CharField(max_length=50)
slug = models.CharField(max_length=200)
description = models.TextField()
created_date = models.DateTimeField(auto_now_add=True)
published_date = models.DateTimeField(blank=True, null=True)
def publish(self):
self.published_date = timezone.now()
self.save()
def __str__(self):
return self.title
class Post(models.Model):
author = models.ForeignKey('auth.User')
category = models.ForeignKey('Category')
title = models.CharField(max_length=200)
text = models.TextField()
created_date = models.DateTimeField(auto_now_add=True)
published_date = models.DateTimeField(blank=True, null=True)
likes = models.IntegerField(default=0)
thumbnail = models.FileField(upload_to = get_upload_file_name)
def publish(self):
self.published_date = timezone.now()
self.save()
def __str__(self):
return self.title
你能幫我解決這個問題嗎?
urls.py
參數的名稱是pk
:
url(r'^category/(?P<pk>[0-9]+)/$', views.category_detail, name='category'),
但是您正在嘗試使用參數category_id
查找網址。 將其更改為:
{% url 'blog.views.category_detail' pk=category.pk %}
甚至省略參數名稱:
{% url 'blog.views.category_detail' category.pk %}
並且imho,就你的網址有name
,最好通過它的名字而不是視圖的名稱來找到這個網址:
{% url 'category' category.pk %}
更新 :在post_list.html
您使用以下代碼:
<a href="{% url 'category_detail' pk=category.pk %}/">{{ cat.title }}</a>
據我所知,類別變量名為cat
。 Yous應該將正確的變量傳遞給{% url %}
標記:
<a href="{% url 'category_detail' pk=cat.pk %}">{{ cat.title }}</a>
要解決此類問題,請務必考慮在Category
模型中實現get_absolute_url()
方法。 只要您需要指向類別,請使用此方法:
<a href="{{ cat.get_absolute_url }}">{{ cat.title }}</a>
看看你的變量名,你用cat
獲取標題和category
來獲取pk。 也許category
未定義? 這將導致在url標記中插入空字符串,並導致收到的錯誤消息。
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