Python Django个人网站搭建11-优化文章模块

...
from django.core.paginator import Paginator

def article_list(request):
    # 取出所有博客文章
    article_list = ArticlePost.objects.all()
    # 每页显示一篇文章
    paginator = Paginator(article_list, 3)
    # 获取url中的页码
    page = request.GET.get('page')
    # 将导航对象相应的页码内容返回给articles
    articles = paginator.get_page(page)
    # 需要传递给模板对象
    context = {'articles': articles}
    # render函数载入模板，并返回context对象
    return render(request, 'article/list.html', context)
...

...
<div class="pagination row">
    <div class="m-auto">
        <span class="step-links">
            {% if articles.has_previous %}
                <a href="?page=1" class="btn btn-success">
                    &laquo; 1
                </a>
                <span>...</span>
                <a href="?page={{ articles.previous_page_number }}"
                   class="btn btn-secondary"
                >
                    {{ articles.previous_page_number }}
                </a>
            {% endif %}
            <span class="current btn btn-danger btn-lg">
                {{ articles.number }}
            </span>
            {% if articles.has_next %}
                <a href="?page={{ articles.next_page_number }}"
                   class="btn btn-secondary"
                >
                    {{ articles.next_page_number }}
                </a>
                <span>...</span>
                <a href="?page={{ articles.paginator.num_pages }}"
                   class="btn btn-success"
                >
                    {{ articles.paginator.num_pages }} &raquo;
                </a>
            {% endif %}
        </span>
    </div>
</div>

class ArticlePost(models.Model):
...
    updated = models.DateTimeField(auto_now=True)
    total_views = models.PositiveIntegerField(default=0)
...

python manage.py makemigrations

C:\mysite>python manage.py makemigrations
System check identified some issues:

WARNINGS:
article.ArticlePost.created: (fields.W161) Fixed default value provided.
        HINT: It seems you set a fixed date / time / datetime value as default for this field. This may not be what you want. If you want to have the current date as default, use `django.utils.timezone.now`
Migrations for 'article':
  article\migrations\0005_auto_20200517_1338.py
    - Add field total_views to articlepost
    - Alter field created on articlepost

C:\mysite>

C:\mysite>python manage.py migrate
System check identified some issues:

WARNINGS:
article.ArticlePost.created: (fields.W161) Fixed default value provided.
        HINT: It seems you set a fixed date / time / datetime value as default for this field. This may not be what you want. If you want to have the current date as default, use `django.utils.timezone.now`
Operations to perform:
  Apply all migrations: admin, article, auth, contenttypes, sessions, userprofile
Running migrations:
  Applying article.0005_auto_20200517_1338... OK

C:\mysite>

...
<div class="card-footer">
                        <a href="{% url 'article:article_detail' article.id %}" class="btn btn-primary">read</a>
                        <span>
                            <small class="col align-self-end" style="color: gray;">
                                views: {{ article.total_views }}
                            </small>
                        </span>
                        ...

{% extends "base.html" %}
{% load static %}
{% block title %}
    article
{% endblock title %}
{% block content %}
    <div class="container">
        <div class="row">
            <h1 class="col-12 mt-4">{{ article.title }}</h1>
            <div class="col-12 alert alert-success">Author: {{ article.author }}</div>
        {% if user == article.author %}
            .<a href="#" onclick="confirm_delete()">Delete</a>
            .<a href="{% url "article:article_update" article.id %}">Edit</a>
        {% endif %}
            <div>
                &nbsp;&nbsp;views: {{ article.total_views }}
            </div>
            <div class="col-12">
                <p>{{ article.body|safe }}</p>
            </div>
...

def article_detail(request, id):
    ...
    article.total_views += 1
    article.save(update_fields=['total_views'])
    ...