# coding:utf8
# __author: Administrator
# date: 2018/3/7 0007
# /usr/bin/env python
import tornado.web
from math
import ceil
LIST_INFO =
[
{'username':
'ld',
"email":
'12345@qq.com'},
]
class Pagination:
#传入当前页，总条数
def __init__(self,current_page,total_num):
try:
current_page =
int(current_page)
except:
current_page = 1
if current_page < 1
:
current_page = 1
#总条数
self.total_num=
total_num
#默认每页显示内容
self.page_size=5
#默认分页栏显示几页
self.page_show_num=11
#当前页
self.current_page=
current_page
#总页数
self.total_page=ceil(total_num/
self.page_size)
#当前路径
self.base_url=
'/index/'
#设置当前路径
@property
def set_base_url(self,base_url):
self.base_url=
base_url
#设置页面显示条数
@property
def set_size(self,page_size):
self.page_size=
page_size
#设置分页类显示数量
@property
def set_page_show_num(self,page_show_num):
self.page_show_num=
page_show_num
#设置总页数
@property
def set_total(self,page_total):
self.total_page=
page_total
#获取分页栏的页数范围，返回列表
def get_list(self):
cur = (self.current_page - 1) *
self.page_size
show_page =
[]
mid_page=int(self.page_show_num/2
)
if self.total_page <= self.page_show_num: #检测输入页码的合法性
show_page = range(self.total_page-self.page_show_num, self.total_page + 1
)
else:
if self.current_page <=
mid_page:
show_page = range(1, self.page_show_num+1
)
elif self.current_page + mid_page >=
self.total_page:
show_page = range(self.total_page - self.page_show_num +1, self.total_page + 1
)
else:
show_page = range(self.current_page - mid_page, self.current_page + mid_page+1
)
return show_page
#获取当前页，开始条数
@property
def start(self):
return (self.current_page - 1) * 5
#获取当前页结束条数
@property
def end(self):
end_page_num=
0
cur_num=(self.current_page-1)*
self.page_size
if cur_num+self.page_size >
self.total_num:
end_page_num=
self.total_num
else:
end_page_num=cur_num+
self.page_size
return end_page_num
#获取上一页
@property
def pre_page(self):
page_str=
''
if self.current_page>1
:
page_str =
'<a href="%s%s">上一页</a>'%(self.base_url,self.current_page - 1
)
return page_str
#获取下一页
@property
def next_page(self):
page_str=
''
if self.current_page <
self.total_page:
page_str =
'<a href="%s%s">下一页</a>'%(self.base_url,self.current_page + 1
)
return page_str
#获取第一页
@property
def first_page(self):
page_str=
''
if self.total_page>1
and self.current_page!=1
:
page_str=
'<a href="%s1">首页</a>'%
self.base_url
return page_str
#获取尾页
@property
def last_page(self):
page_str=
''
if self.total_page>1
and self.current_page!=
self.total_page:
page_str =
'<a href="%s%s">尾页</a>' %
(self.base_url,self.total_page)
return page_str
#拼接html和javascript进行跳转页面
@property
def go_page(self):
page_str=
''
if self.total_page>1
:
inp=
"""<input type='text' /><a οnclick="Jump('%s',this)">GO</a>"""%
(self.base_url)
script=
"""
<script>
function Jump(baseUrl,ths){
var v=ths.previousElementSibling.value;
if(v.trim().length>0){
location.href=baseUrl+v;
}
}
</script>
"""
page_str=inp+
script
return page_str
#返回模板页面所需要显示的html,需要在模板也进行还原， {% raw XXX %}
@property
def page_str(self):
page_list=
self.get_list()
page_list_num=
[]
page_list_num.append(self.first_page)
page_list_num.append(self.pre_page)
for p
in page_list:
if self.current_page==
p:
temp=
"<a href='%s%s' class='cur'>%s</a>"%
(self.base_url,p,p)
else:
temp =
"<a href='%s%s'>%s</a>" %
(self.base_url, p, p)
page_list_num.append(temp)
page_list_num.append(self.next_page)
page_list_num.append(self.last_page)
page_list_num.append(self.go_page)
return ''.join(page_list_num)
class IndexHandler(tornado.web.RequestHandler):
#使用分页类
def get(self,page):
total_page = int(ceil(len(LIST_INFO) / 5
))
#获取页面分页信息
Page=
Pagination(page,len(LIST_INFO)) #传入的page数据是通过url过滤的，只会是数字，为正数，所以上面类中只需要考虑用户输入过大
#获取数据信息
info =
LIST_INFO[Page.start:Page.end]
self.render('home/index.html', list_info=info, p=int(page), sp=
Page.page_str)
#原来分页方式，不使分页类，适用性不高
def get2(self,page):
try:
page =
int(page)
except:
page=1
if page<1
:
page=1
#每页显示5条，page是当前页
total_page = int(ceil(len(LIST_INFO)/5
))
cur=(page-1)*5
info=
[]
show_page=
[]
if cur+5 >
len(LIST_INFO):
info =
LIST_INFO[cur:]
else:
info = LIST_INFO[cur:cur+5
]
if total_page <= 11
:
show_page=range(1,total_page+1
)
else:
if page <= 5
:
show_page=range(1,12
)
elif page+5>=
total_page:
show_page=range(total_page-10,total_page+1
)
else:
show_page=range(page-5,page+6
)
self.render('home/index.html',list_info=info,p=page,tp=total_page,sp=
show_page)
#接收post传递数据
def post(self, page):
user = self.get_argument(
'username')
email = self.get_argument(
'email')
temp = {
'username':user,
'email':email}
LIST_INFO.append(temp)
self.redirect('/index/'+page)
前端模板
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title
</title>
</head>
<style>
.page a{
margin-left: 5px;
padding: 5px;
background-color: lawngreen;
}
.page a:hover{
background-color: rebeccapurple;
}
.page .cur{
background-color: gold !important;
}
</style>
<body>
<h1>提交数据
</h1>
<form method="post" action="/index/{{p}}">
<input name="username" type="text"/>
<input name="email" type="text"/>
<input type="submit" value="提交"/>
</form>
<h1>显示数据
</h1>
<table>
<tr>
<th>用户名
</th>
<th>邮箱
</th>
</tr>
{% for line in list_info %}
<tr>
<td>{{line['username']}}
</td>
<td>{{line['email']}}
</td>
</tr>
{% end %}
</table>
<div class="page">
{% raw sp %}
</div>
</body>
</html>
转载于:https://www.cnblogs.com/ssyfj/p/8525070.html
