一、分页扩展类
#! /usr/bin/env python
# -*- coding:utf-8 -*-
# __author__ = "TKQ"
class Pagination:
def __init__(self,current_page,all_item,base_url='',per_pagenum=5,min_per_pagenum=1,max_per_pagenum=100):
#每页条目数量
try:
per_pagenum=int(per_pagenum)
if per_pagenum < min_per_pagenum:
self._per_pagenum=min_per_pagenum
elif per_pagenum > max_per_pagenum:
self._per_pagenum = max_per_pagenum
else:
self._per_pagenum = per_pagenum
except:
self._per_pagenum=5 #总共页数
try:
all_item = int(all_item)
self._count=all_item
self._p_nums, c = divmod(all_item, self._per_pagenum)
if c > 0:
self._p_nums += 1
except Exception as e:
raise e # 当前页码
try:
page = int(current_page)
if page < 1:
self._current_page = 1
elif page > self._p_nums:
self._current_page = self._p_nums
else:
self._current_page = page
except:
self._current_page = 1 #基础URL
self.base_url = base_url @property
def page(self):
"""
:return: 返回当前页页码
"""
return self._current_page
@property
def num_per_page(self):
"""
:return: 每页显示项个数
"""
return self._per_pagenum
@property
def count(self):
"""
:return: 所有项个数
"""
return self._count
@property
def num_pages(self):
"""
:return:返回总页数.
"""
return self._p_nums def has_prev(self):
"""
:return: 是否有上一页
"""
if self._current_page == 1:
return False
else:
return True def has_next(self):
"""
:return: 是否有下一页
"""
if self._current_page == self._p_nums:
return False
else:
return True @property
def start_index(self):
"""
:return: 当前页起始条目索引值
"""
return (self._current_page - 1) * self._per_pagenum @property
def end_index(self):
"""
:return: 当前页终止条目索引值
"""
return self._current_page * self._per_pagenum #显示前端分页效果
def show_pager(self):
list_page = []
if self._p_nums < 11:
s = 1
t = self._p_nums + 1
else: # 总页数大于11
if self._current_page < 6:
s = 1
t = 12
else:
if (self._current_page + 5) < self._p_nums:
s = self._current_page - 5
t = self._current_page + 5 + 1
else:
s = self._p_nums - 11
t = self._p_nums + 1
# 首页
first = '<a href="/%s/1">首页</a>' % self.base_url
list_page.append(first)
# 上一页
if self.has_prev():
prev = '<a href="/%s/%s">上一页</a>' % (self.base_url,self._current_page - 1,)
list_page.append(prev)
#显示个页码
for p in range(s, t): # 1-11
if p == self._current_page:
temp = '<a class="active" href="/%s/%s">%s</a>' % (self.base_url,p, p)
else:
temp = '<a href="/%s/%s">%s</a>' % (self.base_url,p, p)
list_page.append(temp)
#下一页
if self.has_next():
next = '<a href="/%s/%s">下一页</a>' % (self.base_url,self._current_page + 1,)
list_page.append(next) # 尾页
last = '<a href="/%s/%s">尾页</a>' % (self.base_url,self._p_nums,)
list_page.append(last) # 跳转
jump = """<input type='text' /><a onclick="Jump('%s',this);">GO</a>""" % (self.base_url)
script = """<script>
function Jump(baseUrl,ths){
var val = ths.previousElementSibling.value;
if(val.trim().length>0){
location.href = baseUrl + val;
}
}
</script>"""
list_page.append(jump)
list_page.append(script)
str_page = "".join(list_page)
return str_page if __name__ == '__main__':
p=Pagination(2,100,'index',per_pagenum=10)
print p._p_nums,p.base_url,p._current_page
Pagination类
二、使用tonado模板展示
#! /usr/bin/env python
# -*- coding:utf-8 -*-
# __author__ = "TKQ"
import tornado.httpserver
import tornado.ioloop
import tornado.options
import tornado.web
from pager import Pagination from tornado.options import define, options
define("port", default=8000, help="run on the given port", type=int) class IndexHandler(tornado.web.RequestHandler):
def get(self, page):
p = Pagination(page, 100, 'index', 10)
self.render('index.html', pager=p) if __name__ == "__main__":
tornado.options.parse_command_line()
app = tornado.web.Application([
(r"/index/(?P<page>\w*)",IndexHandler)
],template_path="template",static_path="static") http_server = tornado.httpserver.HTTPServer(app)
http_server.listen(options.port)
tornado.ioloop.IOLoop.instance().start()
tornado
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.pager a{
display: inline-block;
padding: 5px;
margin: 3px;
background-color: cadetblue;
}
.pager a.active{
background-color: brown;
color: white;
}
</style> </head>
<body>
<div>
<p>起始项索引值：{{pager.start_index}}</p>
<p>终止项索引值：{{pager.end_index}}</p>
<p>当前页：{{pager.page}}</p>
<p>共 {{pager.num_pages}} 页</p>
<p>每页显示 {{pager.num_per_page}} 个</p>
<p>base_url: {{pager.base_url}} </p>
</div>
<div class="pager">
{% raw pager.show_pager() %}
</div> </body>
</html>
tornado模板使用
三、jquery插件进行展示
使用前端Js进行异步调用，比使用模板的效率高。
待补充。。