Django实现分页功能

class Paginator(object):
 
  def __init__(self, object_list, per_page, orphans=0,
         allow_empty_first_page=True):
    self.object_list = object_list
    self.per_page = int(per_page)
    self.orphans = int(orphans)
    self.allow_empty_first_page = allow_empty_first_page
 
……

#!/usr/bin/env python
# _*_ coding:utf-8 _*_
 
import os
 
from django.core.paginator import Paginator
objects = ['john','paul','george','ringo','lucy','meiry','checy','wind','flow','rain']<br>
p = Paginator(objects,3) # 3条数据为一页，实例化分页对象
print p.count # 10 对象总共10个元素
print p.num_pages # 4 对象可分4页
print p.page_range # xrange(1, 5) 对象页的可迭代范围
 
page1 = p.page(1) # 取对象的第一分页对象
print page1.object_list # 第一分页对象的元素列表['john', 'paul', 'george']
print page1.number # 第一分页对象的当前页值 1
 
page2 = p.page(2) # 取对象的第二分页对象
print page2.object_list # 第二分页对象的元素列表 ['ringo', 'lucy', 'meiry']
print page2.number # 第二分页对象的当前页码值 2
 
print page1.has_previous() # 第一分页对象是否有前一页 False
print page1.has_other_pages() # 第一分页对象是否有其它页 True
 
print page2.has_previous() # 第二分页对象是否有前一页 True
print page2.has_next() # 第二分页对象是否有下一页 True
print page2.next_page_number() # 第二分页对象下一页码的值 3
print page2.previous_page_number() # 第二分页对象的上一页码值 1
print page2.start_index() # 第二分页对象的元素开始索引 4
print page2.end_index() # 第2分页对象的元素结束索引 6

from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
from django.shortcuts import render
 
def listing(request):
  contact_list = Contacts.objects.all()
  paginator = Paginator(contact_list, 25) # Show 25 contacts per page
 
  page = request.GET.get('page')
  try:
    contacts = paginator.page(page)
  except PageNotAnInteger:
    # If page is not an integer, deliver first page.
    contacts = paginator.page(1)
  except EmptyPage:
    # If page is out of range (e.g. 9999), deliver last page of results.
    contacts = paginator.page(paginator.num_pages)
 
  return render(request, 'list.html', {'contacts': contacts})

{% for contact in contacts %}
  {# Each "contact" is a Contact model object. #}
  {{ contact.full_name|upper }}<br />
  ...
{% endfor %}
 
<div class="pagination">
  <span class="step-links">
    {% if contacts.has_previous %}
      <a href="?page={{ contacts.previous_page_number }}">previous</a>
    {% endif %}
 
    <span class="current">
      Page {{ contacts.number }} of {{ contacts.paginator.num_pages }}.
    </span>
 
    {% if contacts.has_next %}
      <a href="?page={{ contacts.next_page_number }}">next</a>
    {% endif %}
  </span>
</div>

polls/
  __init__.py
  models.py
  templatetags/
    __init__.py
    poll_extras.py
  views.py

{% load poll_extras %}