Django-分页扩展

django提供了分页函数，但是功能较少，因此我对其进行了扩展

views.py

 1 from django.core.paginator import Paginator,EmptyPage,PageNotAnInteger
 2 USER_LIST = []
 3 for i in range(1,999):
 4     temp = {'name':'root'+str(i),'age':i}
 5     USER_LIST.append(temp)
 6 #自定制的继承于Paginator的类，增加了显示页码功能
 7 class CustomPaginator(Paginator):
 8     def __init__(self,current_page, per_pager_num,*args,**kwargs):
 9         # 当前页
10         self.current_page = int(current_page)
11         # 最多显示的页码数量 11
12         self.per_pager_num = int(per_pager_num)
13         super(CustomPaginator,self).__init__(*args,**kwargs)
14     def pager_num_range(self):
15         # 当前页
16         #self.current_page
17         # 最多显示的页码数量 11
18         #self.per_pager_num
19         # 总页数
20         # self.num_pages
21         if self.num_pages < self.per_pager_num:
22             return range(1,self.num_pages+1)
23         # 总页数特别多 5
24         part = int(self.per_pager_num/2)
25         if self.current_page <= part:
26             return range(1,self.per_pager_num+1)
27         if (self.current_page + part) > self.num_pages:
28             return range(self.num_pages-self.per_pager_num+1,self.num_pages+1)
29         return range(self.current_page-part,self.current_page+part+1)
30 
31 def FenYe(request):
32     
33     current_page = request.GET.get('p')
34     # Paginator对象
35     paginator = CustomPaginator(current_page,11,USER_LIST,10)#调用自定义类参数为（当前页码，显示的页码数，总的数据，每页显示的数据条数）
36     try:
37         # Page对象
38         posts = paginator.page(current_page)
39         
40     except PageNotAnInteger:
41         posts = paginator.page(1)
42     except EmptyPage:
43         posts = paginator.page(paginator.num_pages)
44 
45     return render(request, 'fenye.html', {'posts': posts})

fenye.html:

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>fenye1</title>
 6 </head>
 7 <body>
 8         {% for item in posts %}
 9             <li>{{ item.name }}--{{ item.age }}</li>
10         {% endfor %}
11     {% include 'include/pager.html' %}
12 
13 </body>
14 </html>

pager.html

 1  {% if posts.has_previous %}
 2     <a href="/fenye1?p={{ posts.previous_page_number }}">上一页</a>
 3     {% else %}
 4     <a href="#">上一页</a>
 5 {% endif %}
 6 {% for i in posts.paginator.pager_num_range %}
 7     {% if i == posts.number  %}
 8         <a style="font-size: 30px;" href="/fenye1?p={{ i }}">{{ i }}</a>
 9     {% else %}
10         <a href="/fenye1?p={{ i }}">{{ i }}</a>
11     {% endif %}
12 {% endfor %}
13 
14 {% if posts.has_next %}
15     <a href="/fenye1?p={{ posts.next_page_number }}">下一页</a>
16 {% endif %}
17 <span>
18     {{ posts.number }}/{{ posts.paginator.num_pages }}
19 </span>

Paginator对象

全部数据：USER_LIST，=》得出共有多少条数据
per_page: 每页显示条目数量
count:    数据总个数
num_pages:总页数
page_range:总页数的索引范围，如: (1,10),(1,200)
page:     page对象（是否具有下一页；是否有上一页；）

Page对象

# has_next              是否有下一页
# next_page_number      下一页页码
# has_previous          是否有上一页
# previous_page_number  上一页页码
# object_list           分页之后的数据列表，已经切片好的数据
# number                当前页
# paginator             paginator对象

Paginator对象

Page对象

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