1. Django内置分页
from django.shortcuts import render
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
L = []
for i in range(1, 999):
L.append(i)
# Create your views here.
def index(request):
current_page = request.GET.get('p')
# paginator对象
paginator = Paginator(L, 10) # 10表示每页显示10条
# 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
try:
# 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
except PageNotAnInteger:
posts = paginator.page(1)
except EmptyPage:
posts = paginator.page(paginator.num_pages)
return render(request, 'index.html', locals())
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<ul>
{% for item in posts.object_list %}
<li>{{ item }}</li>
{% endfor %}
</ul>
{% if posts.has_previous %}
<a href="/index.html?p={{ posts.previous_page_number }}">上一页</a>
{% else %}
<a href="#">上一页</a>
{% endif %}
{% if posts.has_next %}
<a href="/index.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>
</body>
</html>
2. Django内置分页扩展
class CustomPaginator(Paginator):
def __init__(self, current_page=1, max_page_num=7, *args, **kwargs):
super(CustomPaginator, self).__init__(*args, **kwargs)
self.current_page = int(current_page)
self.max_page_num = max_page_num
def page_num_range(self):
# 总页数过少
if self.num_pages < self.max_page_num:
return range(1, self.num_pages + 1)
part = self.max_page_num // 2
if self.current_page - part < 1:
return range(1, self.max_page_num + 1)
if self.current_page + part > self.num_pages:
return range(self.num_pages + 1 - self.max_page_num, self.num_pages + 1)
return range(self.current_page - part, self.current_page + part + 1)
def index2(request):
current_page = request.GET.get('p')
try:
# paginator对象
paginator = CustomPaginator(current_page, 11, L, 10) # 10表示每页显示10条
# 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
except Exception:
paginator = CustomPaginator(1, 11, L, 10)
try:
# 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
except PageNotAnInteger:
posts = paginator.page(1)
except EmptyPage:
posts = paginator.page(paginator.num_pages)
return render(request, 'index2.html', {'posts': posts})
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<ul>
{% for item in posts.object_list %}
<li>{{ item }}</li>
{% endfor %}
</ul>
{% if posts.has_previous %}
<a href="/index2.html?p={{ posts.previous_page_number }}">上一页</a>
{% else %}
<a href="#">上一页</a>
{% endif %}
{% for i in posts.paginator.page_num_range %}
<a href="/index2.html?p={{ i }}">{{ i }}</a>
{% endfor %}
{% if posts.has_next %}
<a href="/index2.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>
</body>
</html>
3. 自定义分页
class Paginator(object):
def __init__(self, total_count, current_page, per_page_item_num=10, max_page_num=7):
# 数据总个数
self.total_count = total_count
# 当前页
try:
v = int(current_page)
if v <= 0:
v = 1
self.current_page = v
except Exception:
self.current_page = 1
# 每页显示的行数
self.per_page_item_num = per_page_item_num
# 最多显示页面
self.max_page_num = max_page_num
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
def num_pages(self):
"""
总页数
:return:
"""
# 666
# 10
a, b = divmod(self.total_count, self.per_page_item_num)
if b == 0:
return a
return a + 1
def page_num_range(self):
if self.num_pages < self.max_page_num:
return range(1, self.num_pages + 1)
part = self.max_page_num // 2
if self.current_page - part < 1:
return range(1, self.max_page_num + 1)
if self.current_page + part > self.num_pages:
return range(self.num_pages + 1 - self.max_page_num, self.num_pages + 1)
return range(self.current_page - part, self.current_page + part + 1)
def page_str(self):
page_list = []
first = "<li><a href='/index3.html?p=1'>首页</a></li>"
page_list.append(first)
if self.current_page == 1:
prev = "<li><a href='#'>上一页</a></li>"
else:
prev = "<li><a href='/index3.html?p=%s'>上一页</a></li>" % (self.current_page - 1,)
page_list.append(prev)
for i in self.page_num_range():
if i == self.current_page:
temp = "<li class='active'><a href='/index3.html?p=%s'>%s</a></li>" % (i, i)
else:
temp = "<li><a href='/index3.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='/index3.html?p=%s'>下一页</a></li>" % (self.current_page + 1,)
page_list.append(nex)
last = "<li><a href='/index3.html?p=%s'>尾页</a></li>" % (self.num_pages,)
page_list.append(last)
return ''.join(page_list)
def index3(request):
from app01.pager import Paginator
current_page = request.GET.get('p')
page_obj = Paginator(666, current_page)
data = L[page_obj.start():page_obj.end()]
return render(request, 'index3.html', locals())
<!DOCTYPE html>
{% load staticfiles %}
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" href="{% static 'plugin/bootstrap/css/bootstrap.css' %}">
</head>
<body>
<ul>
{% for row in data %}
<li>{{ row }}</li>
{% endfor %}
</ul>
<ul class="pagination pagination-sm">
{{ page_obj.page_str|safe }}
</ul>
<div style="height: 300px;"></div>
</body>
</html>