Django之分页功能-转

原文地址：https://www.cnblogs.com/kongzhagen/p/6640975.html

注意事项：

在django中，注册自定义 pagetag.py

from django import template
register = template.Library()

@register.filter
def kong_upper(val):
    print ('val from template:',val)
    return val.upper()


from django.utils.html import format_html
@register.simple_tag
def circle_page(curr_page,loop_page):
    offset = abs(curr_page - loop_page)
    if offset < 3:
        if curr_page == loop_page:
            page_ele = '<li class="active"><a href="?page=%s">%s</a></li>'%(loop_page,loop_page)
        else:
            page_ele = '<li><a href="?page=%s">%s</a></li>'%(loop_page,loop_page)
        return format_html(page_ele)
    else:
        return ''

新增内容：

　　news/views.py

from django.shortcuts import render,redirect

from wagtail.wagtailcore.models import Page, Orderable  #wagtail usered
from news.models import NewsPage
from django.core.urlresolvers import resolve
from django.core.paginator import Paginator,EmptyPage,PageNotAnInteger

def NewSplitPage(request):
    newspages = NewsPage.objects.all()
    paginator = Paginator(newspages,3,2)          #每页3条数据，少于2条，合并上页
    page = request.GET.get('page')
    try:
        post = paginator.page(page)
    except PageNotAnInteger:
        post = paginator.page(1)
    except EmptyPage:
        post = paginator.page(paginator.num_pages)
    return render(request,'news/news_index_page.html',{"newspages":post})

 

　　修改 news_index_page.html 插入以下代码（实现分页）

<nav aria-label="Page navigation">
  <ul class="pagination">
      {% if newspages.has_previous %}
          <li>
              <a href="?page={{ newspages.previous_page_number }}" aria-label="Previous">
                <span aria-hidden="true">&laquo;</span>
              </a>
          </li>
      {% endif %}

    {%  for pg in newspages.paginator.page_range %}
        {% circle_page newspages.number pg %}
    {% endfor %}

    {% if newspages.has_next %}
        <li>
          <a href="?page={{ newspages.next_page_number }}" aria-label="Next">
            <span aria-hidden="true">&raquo;</span>
          </a>
        </li>
        {% endif %}
  </ul>
</nav>

 　　修改urls.py ,增加：

from news import views as nw_views
...  
url(r'^NewSplitPage/$', nw_views.NewSplitPage, name='NewSplitPage'),