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django 分页

2016-04-06 15:10 405 查看

django 分页，urls

from django.conf.urls import url
from django.contrib import admin
from app01 import views
urlpatterns = [
#url(r'^admin/', admin.site.urls),
url(r'^index/(\d*)/', views.index),
]

views

#!/usr/bin/env python
#_*_coding:utf-8_*_

from django.shortcuts import render,render_to_response,redirect,HttpResponse
from app01 import models
from django.utils.safestring import mark_safe
import common
# Create your views here.

def index(request,page):

pageint = 5
page = common.try_int(page)
startpage = (page-1) * pageint  #根据url传过来的参数判断开始条数
endpage = page * pageint        #根据url传过来的参数判断结束条数

hostall = models.Host.objects.all()[startpage:endpage]   #一页显示的条数
hostcount= models.Host.objects.all().count()             #获取数据库的总共条数

#判断总页数，如果能整除5，页数不加一， 不过不能整除5，需要加一
tempcountpage = divmod(hostcount,pageint)
if tempcountpage[1] == 0:
all_page_count = tempcountpage[0]
else:
all_page_count = tempcountpage[0] +1

#定义一个列表，然后循环总页数，追加到列表中，
page_html = []

#首页
first_page = '<a href="/index/%d">首页</a>'%(1)
page_html.append(first_page)

#上一页
if page <= 1:
up_page = '<a href="/index/%d">上一页</a>'%(1)
else:
up_page = '<a href="/index/%d">上一页</a>'%(page - 1)

page_html.append(up_page)

#显示1。。。最后的页数
for i in  range(all_page_count):
if page == i +1:
temp_html = '<a class="selected" href="/index/%d">[%d]</a>'%(i+1,i+1)
else:
temp_html = '<a href="/index/%d">[%d]</a>'%(i+1,i+1)

page_html.append(temp_html)

#下一页
if page >= all_page_count:
next_page = '<a href="/index/%d">[下一页]</a>' % (all_page_count)
else:
next_page = '<a href="/index/%d">[下一页]</a>'%(page + 1)
page_html.append(next_page)

# 尾页
end_page = '<a href="/index/%d">[尾页]</a>' %(all_page_count)
page_html.append(end_page)

# 使用mark_safe 可让html显示返回的a标签。join 把列表取出用空格连接
page_html = mark_safe(' '.join(page_html))

ret = {'data':hostall,'count':hostcount,'page_ret':page_html}
return render_to_response('index.html',ret)

html，index.html

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
body
{
font-size: .85em;
font-family:"Trebuchet MS",Verdana,Helvetica,"Sakkal Majalla";
color: #232323;
background-color: #ffffff;
}
#Pageing A{ background-color:aliceblue;
border: 1px solid white;
text-decoration: none;
color:black;
padding: .1em .6em .2em .6em;}

#Pageing A.selected{
background-color: #AA7700;
}
</style>
</head>
<body>
<table border="1px">
<tr>
<td>HostName</td>
<td>IP</td>
</tr>
{% for item in data %}
<tr>
<td>{{ item.HostName }}</td>
<td>{{ item.ip }}</td>
</tr>
{% endfor %}
</table>

<div style="color: black;font-size: medium"> 共计{{ count }}条数据</div>
<div id="Pageing"> {{ page_ret }}</div>
</body>
</html>

modles.py

from __future__ import unicode_literals

from django.db import models

# Create your models here.
class Host(models.Model):
HostName = models.CharField(max_length=256)
ip = models.GenericIPAddressField()

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