如何按日期排序django帖子视图

from django.views.generic import ListView
from .models import Post

class PostListView(ListView):
    model = Post
    template_name = 'post_list.html'

class PostListView(ListView):
    model = Post
    template_name = 'post_list.html'
    queryset = Post.objects.order_by('-publish_date')

from django.urls import path
from .views import PostListView

urlpatterns = [
    path('posts/', PostListView.as_view(), name='post-list'),
]