django模板url问题

# urls.py
from django.urls import path
from myapp.views import my_view

urlpatterns = [
    path('my-url/', my_view, name='my_url_name'),
]

<a href="{% url 'my_url_name' %}">Link to my view</a>

# urls.py
urlpatterns = [
    path('user/<int:user_id>/', user_detail_view, name='user_detail'),
]

<a href="{% url 'user_detail' user.id %}">User Profile</a>

def user_detail_view(request, user_id):
    # 处理user_id
    ...

# settings.py
INSTALLED_APPS = [
    ...
    'myapp',
    ...
]

from django.urls import path
from blog.views import post_detail

urlpatterns = [
    path('post/<int:pk>/', post_detail, name='post_detail'),
]

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

def post_detail(request, pk):
    post = get_object_or_404(Post, pk=pk)
    return render(request, 'blog/post_detail.html', {'post': post})

<h1>{{ post.title }}</h1>
<p>{{ post.content }}</p>
<a href="{% url 'post_detail' post.pk %}">View Post</a>