Blog_Django（六）：blog分页列出文章

在blog中，列出所有文章，需要分如下几步：

第一步：视图函数

from django.core.paginator import Paginator, InvalidPage, EmptyPage, PageNotAnInteger



def index(request):
    try:
        f = open("a.txt", "r")
    except Exception as e:
        logger.error(e)

    category_list = Category.objects.all()

    # 文章分页
    all_article = Article.objects.all()
    paginator = Paginator(all_article, per_page=2)
    page_index = int(request.GET.get('page', 1))
    try:
        article_list = paginator.page(page_index)
    except (InvalidPage, EmptyPage, PageNotAnInteger) as e:
        article_list = paginator.page(1)
    
    return render(request, "index.html", {"category_list":category_list, "article_list":article_list})

django自带分页器Paginator，需要两个参数：数据列表，每页大小。

第二步：页面

{% extends "main/base.html" %}
{% load staticfiles %}
{% block content %}
    <div class="topnews">
        <h2>最新文章</h2>
        {% for article in article_list %}
            <div class="blogs">
                <ul>
                    <h3><a href="/">{{ article.title }}</a></h3>
                    <p>{{ article.description }}</p>
                    <p class="autor">
                        <span class="lm f_l">
                            <a href="/">
                                {% for tag in article.tag.all %}{{ tag.name }}&nbsp;{% endfor %}
                            </a>
                        </span>
                        <span class="dtime f_l">{{ article.date_publish|date:'Y-m-d' }}</span>
                        <span class="viewnum f_r">浏览（<a href="/">{{ article.click_count }}</a>）</span>
                        <span class="pingl f_r">评论（<a href="/">{{ article.comment_set.count }}</a>）</span></p>
                </ul>
            </div>
        {% endfor %}
    </div>
    {#分页#}
    <div id="pagination">
        <ul id="pagination-flickr">
            {% if article_list.has_previous %}
                <li class="previous"><a href="?page={{ article_list.previous_page_number }}">&laquo;上一页</a></li>
            {% else %}
                <li class="previous-off">&laquo;上一页</li>
            {% endif %}
            <li class="active">{{ article_list.number }}/{{ article_list.paginator.num_pages }}</li>
            {% if article_list.has_next %}
                <li class="next"><a href="?page={{ article_list.next_page_number }}">下一页 &raquo;</a></li>
            {% else %}
                <li class="next-off">下一页 &raquo;</li>
            {% endif %}
        </ul>
    </div>
{% endblock %}

重点使用了django的分页器。