如何在 DJango 的前端输出多次

Question

我正在构建一个使用 HackerNews API 的网络应用程序，但我一直运行陷入同样的错误。

我正在尝试从 API 输出 10 个请求的结果，但每次我使用 return 响应时它只输出第一个结果。

我希望它输出 API 中的 10 篇文章，而不仅仅是一篇文章。

这是我的代码：

from operator import itemgetter 
import requests
from django.shortcuts import render

# Make an API call and store the response.
def home(request):
    url = 'https://hacker-news.firebaseio.com/v0/topstories.json' 
    r = requests.get(url)
    print(f"Status code: {r.status_code}")
    # Process information about each submission.
    submission_ids = r.json()
    submission_dicts = []
    for submission_id in submission_ids[:10]:
        # Make a separate API call for each submission.
        url = f"https://hacker-news.firebaseio.com/v0/item/{submission_id}.json" 
        r = requests.get(url)
        print(f"id: {submission_id}\tstatus: {r.status_code}") 
        response_dict = r.json()
        # Build a dictionary for each article.
        submission_dict = {
            'title': response_dict['title'],
            'hn_link': f"http://news.ycombinator.com/item?id={submission_id}", 
            # 'comments': response_dict['descendants'],
        }
        submission_dicts.append(submission_dict)
    # submission_dicts = sorted(submission_dicts, key=itemgetter('comments'), 
    #                             reverse=True)
    for submission_dict in submission_dicts:
        print(f"\nTitle: {submission_dict['title']}")
        print(f"Discussion link: {submission_dict['hn_link']}")
        # print(f"Comments: {submission_dict['comments']}")
    count = 0
    if count < 10:
        return render(request, "news_api/home.html", submission_dict)

Answer 1

您只得到一个结果，因为您的 return 语句正在调用“submission_dict”。您可能想调用“submission_dict(s)”或类似的东西，但很难根据代码中注释掉的内容来判断。我认为这是你的主要问题。没有看到您的模板，我不知道您的上下文对象应该是什么样子。

但是试试这个：

# views.py
def hacker_news_api_selector():
    url = 'https://hacker-news.firebaseio.com/v0/topstories.json' 
    r = requests.get(url)
    submission_list = r.json()
    context = {}
    context['objects'] = []

    # Process information about each submission.
    for submission_id in submission_list[:10]:

        # Make a separate API call for each submission.
        url = f"https://hacker-news.firebaseio.com/v0/item/{submission_id}.json" 
        r = requests.get(url)
        response_dict = r.json()
        context['objects'].append(response_dict)

    return context 

def home(request):
    context = hacker_news_api_selector()
    return render(request, "news_api/home.html", context)

并且在模板中...

# news_api/home.html
<html>
    ...
    {% for x in objects %}
        <li>{{ x.title }}</li>
    {% endfor %}
</html>

如何在 DJango 的前端输出多次

How to Output More than Once In frontend In DJango

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