在django中使用自定义标签实现分页功能

效果演示：

github地址：https://github.com/mncu/django_projects/tree/master/django_projects/pagination_test

本例中总页数为30页，显示页数为12页，当前页的前排页数为4，后排页数为5

将分页分为三种情况：

1   当前页为第1页到第7页的时候，无省略页，且12个位置的内容是不变

2  当前页为第8页到第25页时，位置1与位置2内容不变，当前页一直处于位置7,

3  当前页为第25页到第30页时，位置1与位置2内容不变，位置8到位置12的内容不变，当前页在位置8到位置12之中变换

自定义标签代码：

from django import templateregister = template.Library()@register.assignment_tagdef pagination(current_page,paginator,num_of_displaypages=10,num_of_backpages=4): # current_page is a django.core.paginator.Page 's instance # paginator is a django.core.paginator.Paginator 's instance # num_of_frontpages = num_of_displaypages - num_of_backpages -3 html='' # 当总页数小于等于 显示页数 时，则将总页数全部显示 if paginator.num_pages <= num_of_displaypages :  for i in range(1,paginator.num_pages+1):   html+= '<li ><a href="?page=%s" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >%s </a></li>'%(i,i)  return html # 第一种情况  elif current_page.number <= num_of_displaypages-num_of_backpages:  for i in range(1,num_of_displaypages+1):   html+= '<li ><a href="?page=%s" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >%s </a></li>'%(i,i)  return html # 第二种情况 elif num_of_displaypages-num_of_frontpages <= current_page.number <= paginator.num_pages-num_of_backpages :  html = '''   <li><a href="?page=1" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >1</a></la>   <li class="disabled"><a href="?page=1" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >...</a></la>  '''  for i in range(current_page.number-num_of_frontpages,current_page.number+num_of_backpages+1):   html+='<li><a href="?page=%s" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >%s</a></la>'%(i,i)  return html # 第三种情况 else:  html = '''   <li><a href="?page=1" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >1</a></la>   <li class="disabled"><a href="?page=1" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >...</a></la>  '''  for i in range(paginator.num_pages-num_of_backpages-num_of_frontpages,paginator.num_pages+1):   html+='<li><a href="?page=%s" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >%s</a></la>'%(i,i)  return html