1 """
2 自定义分页组件的使用方法：
3 pager_obj = Pagination(request.GET.get('page',1),len(HOST_LIST),request.path_info,request.GET)
4 host_list = HOST_LIST[pager_obj.start:pager_obj.end]
5 html = pager_obj.page_html()
6 return render(request,'hosts.html',{'host_list':host_list,"page_html":html})
7 """
8 """
9
10 <!DOCTYPE html>
11 <html lang="en">
12 <head>
13 <meta charset="UTF-8">
14 <title>Title</title>
15 <style>
16 .pager a{
17 display: inline-block;
18 padding: 2px 8px;
19 margin: 0 5px;
20 border: 1px solid cadetblue;
21 }
22 .pager a.active{
23 background-color: #2b669a;
24 color: white;
25 }
26 </style>
27 </head>
28 <body>
29 <h1>用户列表</h1>
30 <ul>
31 {% for item in user_list %}
32 <li>{{ item }}</li>
33 {% endfor %}
34 </ul>
35 <div class="pager">
36 {{ page_html|safe }}
37 </div>
38 </body>
39 </html>
40 """
41
42 class Pagination(object):
43 """
44 自定义分页
45 """
46 def __init__(self,current_page,total_count,base_url,params,per_page_count=10,max_pager_count=11):
47 try:
48 current_page = int(current_page)
49 except Exception as e:
50 current_page = 1
51 if current_page <=0:
52 current_page = 1
53 self.current_page = current_page
54 # 数据总条数
55 self.total_count = total_count
56
57 # 每页显示10条数据
58 self.per_page_count = per_page_count
59
60 # 页面上应该显示的最大页码
61 max_page_num, div = divmod(total_count, per_page_count)
62 if div:
63 max_page_num += 1
64 self.max_page_num = max_page_num
65
66 # 页面上默认显示11个页面（当前页在中间）
67 self.max_pager_count = max_pager_count
68 self.half_max_pager_count = int((max_pager_count - 1) / 2)
69
70 # URL前缀
71 self.base_url = base_url
72
73 # request.GET
74 import copy
75 params = copy.deepcopy(params)
76 params._mutable = True
77 # 包含当前列表页面所有的搜索条件
78 # {source:[2,], status:[2], gender:[2],consultant:[1],page:[1]}
79 # self.params[page] = 8
80 # self.params.urlencode()
81 # source=2&status=2&gender=2&consultant=1&page=8
82 # href="/hosts/?source=2&status=2&gender=2&consultant=1&page=8"
83 # href="%s?%s" %(self.base_url,self.params.urlencode())
84 self.params = params
85
86 @property
87 def start(self):
88 return (self.current_page - 1) * self.per_page_count
89
90 @property
91 def end(self):
92 return self.current_page * self.per_page_count
93
94 def page_html(self):
95 # 如果总页数 <= 11
96 if self.max_page_num <= self.max_pager_count:
97 pager_start = 1
98 pager_end = self.max_page_num
99 # 如果总页数 > 11
100 else:
101 # 如果当前页 <= 5
102 if self.current_page <= self.half_max_pager_count:
103 pager_start = 1
104 pager_end = self.max_pager_count
105 else:
106 # 当前页 + 5 > 总页码
107 if (self.current_page + self.half_max_pager_count) > self.max_page_num:
108 pager_end = self.max_page_num
109 pager_start = self.max_page_num - self.max_pager_count + 1
110 else:
111 pager_start = self.current_page - self.half_max_pager_count
112 pager_end = self.current_page + self.half_max_pager_count
113
114
page_html_list = []
# {source:[2,], status:[2], gender:[2],consultant:[1],page:[1]}
self.params['page'] = 1
first_page = '<a href="%s?%s">首页</a>' % (self.base_url, self.params.urlencode(),)
page_html_list.append(first_page)
# 上一页
if self.current_page > 1:
self.params['page'] = self.current_page-1
else:
self.params['page'] = 1
previous_page = '<a href="%s?%s">上一页</a>' % (self.base_url, self.params.urlencode(),)
page_html_list.append(previous_page)
for i in range(pager_start, pager_end + 1):
self.params['page'] = i
if i == self.current_page:
temp = '<a class="active" href="%s?%s">%s</a>' % (self.base_url, self.params.urlencode(), i,)
else:
temp = '<a href="%s?%s">%s</a>' % (self.base_url, self.params.urlencode(), i,)
page_html_list.append(temp)
# 下一页
if self.current_page < self.max_page_num:
self.params['page'] = self.current_page + 1
else:
self.params['page'] = self.max_page_num
next_page = '<a href="%s?%s">下一页</a>' % (self.base_url, self.params.urlencode(),)
page_html_list.append(next_page)
self.params['page'] = self.max_page_num
last_page = '<a href="%s?%s">尾页</a>' % (self.base_url, self.params.urlencode(),)
page_html_list.append(last_page)
return ''.join(page_html_list)