3

我正在使用 Jinja 模板引擎在 Flask 中创建一个网站。我有一个公告列表,但没有很好的方法来对它们进行排序。

他们现在正在被 id 调用的表中。我想按最新的优先排序(这意味着最高的 id)

像:

  • P1
    • 5
    • 4
    • 3
  • P2
    • 2
    • 1

在我的 HTML 中,我为 Jinja 提供了以下说明:

<div id="main"> 

{% autoescape false %}
{% for announcement in announcements.items|sort(attribute='id', reverse = True) %}

  <a name={{announcement.title}}></a>
  <h1>{{announcement.title}} - Posted on: {{announcement.date}}</h1>
  {{announcement.body}}
  <br/>
  <hr/>

{% endfor %}
{% endautoescape %}

 <p class = "footer">{% if announcements.has_prev %}<a href="{{ url_for('index', page = announcements.prev_num) }}"><< Newer posts</a>{% else %}<< Newer posts{% endif %} | 
 {% if announcements.has_next %}<a href="{{ url_for('index', page = announcements.next_num) }}">Older posts >></a>{% else %}Older posts >>{% endif %} </p>

<br/>
</div>

和蟒蛇:

from flask import render_template, Markup
from app import app
from config import POSTS_PER_PAGE
from models import Announcement, VideoAnnouncement

@app.route('/')
@app.route('/index')
@app.route('/index/<int:page>')
def index(page = 1):
    loggedOut = True
    announcements = Announcement.query.paginate(page, POSTS_PER_PAGE, True)
    videoAnnounce = VideoAnnouncement.query.all()
    return render_template("index.html", announcements = announcements, videoAnnouncements = videoAnnounce , loggedOut = loggedOut)

但这有点像:

  • P1
    • 3
    • 2
    • 1
  • P2
    • 5
    • 4

有没有按降序排序,不会被页面弄乱?

(我希望我的问题是有道理的)

4

1 回答 1

2

接受食人者的建议。我在分页之前重新排序了查询。

更新代码:

from flask import render_template, Markup
from app import app
from config import POSTS_PER_PAGE
from models import Announcement, VideoAnnouncement

@app.route('/')
@app.route('/index')
@app.route('/index/<int:page>')
def index(page = 1):
    loggedOut = True
    query = Announcement.query.order_by(Announcement.id.desc())
    announcements = query.paginate(page, POSTS_PER_PAGE, True)
    videoAnnounce = VideoAnnouncement.query.all()
    return render_template("index.html", announcements = announcements, videoAnnouncements = videoAnnounce , loggedOut = loggedOut)
于 2012-10-28T23:57:06.920 回答