django 模板首先显示最新数据

Question

我必须先在上面显示数据的最新日期，在我的原始代码中，它只在上面显示最旧的数据日期，在下面列出较新的数据

django 2.2

modle.py

from django.conf import settings
from django.contrib.auth import get_user_model
from django.db import models
from django.urls import reverse


class Article(models.Model):
    title = models.CharField(max_length=255)
    body = models.TextField()
    date = models.DateTimeField(auto_now_add=True)
    author = models.ForeignKey(
        get_user_model(),
        on_delete=models.CASCADE,
    )

    def __str__(self):
        return self.title

    def get_absolute_url(self):
        return reverse('article_detail', args=[str(self.id)])

我认为我必须在 views.py 中制作

model = Article --> order_by('-date')

类似的东西？我该怎么办？

views.py

from django.contrib.auth.mixins import LoginRequiredMixin, UserPassesTestMixin
from django.views.generic import ListView, DetailView
from django.views.generic.edit import UpdateView, DeleteView, CreateView
from django.urls import reverse_lazy

from .models import Article


class ArticleListView(LoginRequiredMixin, ListView):
    model = Article
    template_name = 'article_list.html'
    login_url = 'login'

在下面的表格中，它会在上面列出最旧的数据，在下面列出较新的数据，我想做的是在上面列出最新的数据，在下面列出较旧的数据

article_list.html

{% extends 'base.html' %}

{% block title %}Articles{% endblock title %}

{% block content %}
  {% for article in object_list %}
    <div class="card">
      <div class="card-header">
        <span class="font-weight-bold">{{ article.title }}</span> &middot;
        <span class="text-muted">by {{ article.author }} | {{ article.date }}</span>
      </div>
      <div class="card-body">
        {{ article.body }}
      </div>
      <div class="card-footer text-center text-muted">
          <a href="{% url 'article_edit' article.pk %}">Edit</a> |
          <a href="{% url 'article_delete' article.pk %}">Delete</a>
      </div>
    </div>
    <br />
  {% endfor %}
{% endblock content %}

感谢您的评价

Answer 1

您可以通过在模型的 Meta 中设置 ordering 来做到这一点:

要以相反的顺序显示，请在字段名称前加上减号 -。

class Article(models.Model):
    title = models.CharField(max_length=255)
    body = models.TextField()
    date = models.DateTimeField(auto_now_add=True)
    author = models.ForeignKey(
        get_user_model(),
        on_delete=models.CASCADE,
    )

    def __str__(self):
        return self.title

    def get_absolute_url(self):
        return reverse('article_detail', args=[str(self.id)])

    class Meta:
        ordering = ['-date']