如何在Django中获取任何类别的第一条新闻？

from django.db import models

class News(models.Model):
    category = models.CharField(max_length=100)
    title = models.CharField(max_length=100)
    content = models.TextField()
    pub_date = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return self.title

python manage.py makemigrations
python manage.py migrate

from django.shortcuts import render
from .models import News

def get_first_news(request):
    category = "科技"
    first_news = News.objects.filter(category=category).first()
    return render(request, 'news.html', {'news': first_news})

<h1>{{ news.title }}</h1>
<p>{{ news.content }}</p>
<p>发布时间：{{ news.pub_date }}</p>