URL:
"""django_paginner URL Configuration
The `urlpatterns` list routes URLs to views. For more information please see:
https://docs.djangoproject.com/en/2.1/topics/http/urls/
Examples:
Function views
1. Add an import: from my_app import views
2. Add a URL to urlpatterns: path(‘‘, views.home, name=‘home‘)
Class-based views
1. Add an import: from other_app.views import Home
2. Add a URL to urlpatterns: path(‘‘, Home.as_view(), name=‘home‘)
Including another URLconf
1. Import the include() function: from django.urls import include, path
2. Add a URL to urlpatterns: path(‘blog/‘, include(‘blog.urls‘))
"""
from django.contrib import admin
from django.urls import path
from app01 import views
urlpatterns = [
path(‘admin/‘, admin.site.urls),
path(‘index/‘, views.index),
path(‘index1/‘, views.index1),
]
views:
from django.shortcuts import render, HttpResponse
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
# Create your views here.
USER_LIST = []
for i in range(1, 659):
temp = {‘name‘: ‘root‘ + str(i), ‘age‘: i}
USER_LIST.append(temp)
def index(request):
# 当前的页数
current_page = request.GET.get(‘p‘)
# 每页显示10个
per_page_count = 10
# 第一页(0,10)索引是0到9
# 第二页(10,20)索引是10到19
current_page = int(current_page)
# 开始:当前页-1*每页显示10个
# 第二页
# (2-1)*10
start = (current_page - 1) * per_page_count
# 2*10
end = current_page * per_page_count
data = USER_LIST[start:end]
if current_page <= 1:
prev_page = 1
prev_page = current_page - 1
next_page = current_page + 1
return render(request, ‘index.html‘, {‘user_list‘: data, ‘prev_page‘: prev_page, ‘next_page‘: next_page})
class CustomPaginator(Paginator):
def __init__(self, current_page, per_pager_num, *args, **kwargs):
# 当前页
self.current_page = int(current_page)
# 每页最多显示页码数量
self.per_page_num = int(per_pager_num)
super(CustomPaginator, self).__init__(*args, **kwargs)
def pager_num_range(self):
# 当前页
# self.current_page
# 每页最多能显示的页码数量,漂亮最好取奇数 11
# self.per_page_num
# 总页数
# self.num_pages
# 总页数是django分页功能根据数据大小自动分配好的
# 如果总页数小于每页最多能显示的页码数量
# 那么就返回range(第一页到总页数+1),因为range取值是取(开头,结尾-1)
if self.num_pages < self.per_page_num:
return range(1, self.num_pages + 1)
# 总页数特别多
# 当你的当前页 小于或等于,最多显示的页数的一半时,显示前五个,后五个
part = int(self.per_page_num / 2)
if self.current_page <= part:
# return range(1, part + 1)
return range(1, self.per_page_num + 1)
# 极限值:如果当前页+最多显示页数一半>总页数(超出了显示的范围)
# 返回range(总页数-最多显示的页数,总页数+1)
if (self.current_page + part) > self.num_pages:
return range(self.num_pages-self.per_page_num, self.num_pages + 1)
# if self.current_page > part:
return range(self.current_page - part, self.current_page + part + 1)
def index1(request):
# 全部数据:USER_LIST=得出共有多少条数据
# 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(是否具有下一页;是否有上一页)
current_page = request.GET.get(‘p‘)
paginator = CustomPaginator(current_page, 7, USER_LIST, 10)
try:
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, ‘index1.html‘, {‘posts‘: posts})
templates-index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<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
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
{% if posts.has_previous %}
<a href="/index1?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="font-size: 30px;" href="/index1?p={{ i }}">{{ i }}</a>
{% else %}
<a href="/index1?p={{ i }}">{{ i }}</a>
{% endif %}
{% endfor %}
{% if posts.has_next %}
<a href="/index1/?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>
原文地址：https://www.cnblogs.com/ago-0912/p/10017368.html
时间： 2024-10-10 19:44:07