一、django内置分页 django内置分页使用到两个类： Paginator，Page 主要有如下方法及参数： #paginator对象paginator = Paginator(L, 10)# per_page: 每页显示条目数量# count: 数据总个数# num_pages:总页数
一、django内置分页
django内置分页使用到两个类：Paginator，Page
主要有如下方法及参数：
#paginator对象 paginator = Paginator(L, 10) # 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 #page对象 posts = paginator.page(current_page) # 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 # number 当前页 # paginator paginator对象
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可以CustomPaginator(Paginator)，创建自己独特的方法
需要传入的数据：
- 所有数据
- 当前页
- 每页显示的条目数
- 最多页面个数
view.py文件内容：
from django.shortcuts import render
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
USER_LIST = []
for i in range(1,300):
temp = {‘name‘:‘root‘+str(i),‘age‘:i}
USER_LIST.append(temp)
# def index(request):
# per_page_count = 10
# current_page = int(request.GET.get(‘p‘))
#
# start = (current_page-1)*per_page_count
# end = current_page * per_page_count
# data = USER_LIST[start:end]
#
# prev_pager = current_page - 1
# next_pager = current_page + 1
# return render(request,‘index.html‘,{‘user_list‘:data,‘prev_pager‘:prev_pager,‘next_pager‘:next_pager})
# def index1(request):
# current_page = request.GET.get(‘p‘) #获取当前的页码
# paginator = Paginator(USER_LIST,10) #Paginator实例化对象
#
# try:
# posts = paginator.page(current_page) #当前页面实例化page对象
# except PageNotAnInteger: #如果输入的不是整数
# posts = paginator.page(1) #第一页
# except EmptyPage: #后面没有页码了
# posts = paginator.page(paginator.num_pages) #最后一页
# return render(request,‘index1.html‘,{‘posts‘: posts})
class CustomPaginator(Paginator): #继承，自定义方法
def __init__(self,current_page,per_pager_num,*args,**kwargs):
super(CustomPaginator,self).__init__(*args,**kwargs)
#当前页
self.current_page=int(current_page)
#最多显示的页码数量
self.per_pager_num=int(per_pager_num)
def pager_num_range(self):
#当前页：self.current_page
#最多显示的页码数量：self.per_pager_num
#总页数：self.num_pages
if self.num_pages < self.per_pager_num:
return range(1,self.num_pages+1)
#当总页数很多时
part = int(self.per_pager_num/2)
if self.current_page <= part:
return range(1,self.per_pager_num+1)
if (self.current_page + part) > self.num_pages:
return range(self.num_pages-self.per_pager_num+1,self.num_pages)
return range(self.current_page-part,self.current_page+part+1)
def index1(request):
current_page = request.GET.get(‘p‘)
paginator = CustomPaginator(current_page,11,USER_LIST,10)
try:
posts = paginator.page(current_page)
except PageNotAnInteger:
posts = paginator.page(1) #第一页
except EmptyPage:
posts = paginator.page(paginator.num_pages) #最后一页
return render(request,‘index1.html‘,{‘posts‘: posts})
index1.html文件内容：
#index1.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<ul>
{% for row in posts.object_list %}
<li>{{ row.name }}-{{ row.age }}</li>
{% endfor %}
</ul>
{% include ‘include/pager.html‘ %}
</body>
</html>
#+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#pager.html
{% if posts.has_previous %}
<a href="/index1.html?p={{ posts.previous_page_number }}">上一页</a>
{% else %}
<a href="#">上一页</a>
{% endif %}
{% for i in posts.paginator.pager_num_range %}
{% if i == posts.number %}
<a style="color: red" href="/index1.html?p={{ i }}">{{ i }}</a>
{% else %}
<a href="/index1.html?p={{ i }}">{{ i }}</a>
{% endif %}
{% endfor %}
{% if posts.has_next %}
<a href="/index1.html?p={{ posts.next_page_number }}">下一页</a>
{% else %}
<a href="#">下一页</a>
{% endif %}
<span>
{{ posts.number }}/{{ posts.paginator.num_pages }}
</span>
效果：
二、自定义分页
不使用django内置组件，自己单独创建类
需要传入的数据：
- 所有数据的个数
- 当前页
- 每页显示条目数
- 最多页面个数
pager.py文件：
class Pagination(object):
def __init__(self,totalCount,currentPage,perPageItemNum=20,maxPageNum=7):
#数据总个数
self.total_count = totalCount
#当前页
try:
v = int(currentPage)
if v <=0:
v=1
self.current_page = v
except Exception as e:
self.current_page = 1
#每页显示的条数
self.per_page_item_num = perPageItemNum
#最多显示的页码
self.max_page_num = maxPageNum
def start(self):
return (self.current_page - 1) * self.per_page_item_num
def end(self):
return self.current_page * self.per_page_item_num
@property #静态方法
def num_pages(self):
#总页数
a,b=divmod(self.total_count,self.per_page_item_num) #divmod(10,3) ==>(3, 1)
if b==0:
return a
return a+1
def pager_num_range(self):
#当前页：self.current_page
#最多显示的页码数量：self.per_pager_num
#总页数：self.num_pages
if self.num_pages < self.max_page_num:
return range(1,self.num_pages+1)
#当总页数很多时
part = int(self.max_page_num/2)
if self.current_page <= part:
return range(1,self.max_page_num+1)
if (self.current_page + part) > self.num_pages:
return range(self.num_pages-self.max_page_num+1,self.num_pages)
return range(self.current_page-part,self.current_page+part+1)
def page_str(self):
page_list=[]
#首页
first = "<li><a href=‘/index2.html?p=1‘>首页</a></li>"
page_list.append(first)
#上一页
if self.current_page == 1:
prev="<li><a href=‘#‘>上一页</a></li>"
else:
prev="<li><a href=‘/index2.html?p=%s‘>上一页</a></li>" %(self.current_page-1)
page_list.append(prev)
for i in self.pager_num_range():
if i == self.current_page:
temp = "<li class=‘active‘><a class=‘active‘ href=‘/index2.html?p=%s‘>%s</a></li>" %(i,i)
else:
temp = "<li><a href=‘/index2.html?p=%s‘>%s</a></li>" % (i,i)
page_list.append(temp)
if self.current_page == self.num_pages:
nex = "<li><a href=‘#‘>下一页</a></li>"
else:
nex = "<li><a href=‘/index2.html?p=%s‘>下一页</a></li>" %(self.current_page+1)
page_list.append(nex)
last = "<li><a href=‘/index2.html?p=%s‘>尾页</a></li>" %self.num_pages
page_list.append(last)
return ‘ ‘.join(page_list)
html文件：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" href="/static/bootstrap-3.3.7-dist/css/bootstrap.css"/>
</head>
<body>
<ul>
{% for row in data %}
<li>{{ row.name }}-{{ row.age }}</li>
{% endfor %}
{# {% for i in page_obj.pager_num_range %}#}
{# <a href="/index2.html?p={{ i }}">{{ i }}</a>#}
{# {% endfor %}#}
{# <hr/>#}
</ul>
<ul class="pagination">
{{ page_obj.page_str|safe }}
</ul>
</body>
</html>
view.py文件：
def index2(request):
from app01.pager import Pagination
current_page = request.GET.get(‘p‘)
page_obj = Pagination(300,current_page)
data_list = USER_LIST[page_obj.start():page_obj.end()]
return render(request,‘index2.html‘,{‘data‘:data_list,‘page_obj‘:page_obj})
效果：
参考文档：https://www.cnblogs.com/wupeiqi/articles/5246483.html