未找到'post_detail‘在/posts/list/ Reverse处的NoReverseMatch。“post_detail”不是有效的视图函数或模式名称

from django.urls import path
from .views import post_detail

urlpatterns = [
    path('posts/<int:pk>/', post_detail, name='post_detail'),
    # 其他URL模式
]

from django.shortcuts import render
from .models import Post

def post_detail(request, pk):
    post = Post.objects.get(pk=pk)
    return render(request, 'post_detail.html', {'post': post})

from django.urls import path
from .views import post_detail

app_name = 'blog'

urlpatterns = [
    path('posts/<int:pk>/', post_detail, name='post_detail'),
    # 其他URL模式
]

<a href="{% url 'blog:post_detail' pk=post.pk %}">查看详情</a>