Django框架 Pagination分页实现代码实例

一、自定义分页1、基础版自定义分页data=[]foriinrange(1,302):tmp={"id":i,"name":"alex-{}".format(i)}data.a

一、自定义分页

1、基础版自定义分页

data = []
 
for i in range(1, 302):
 tmp = {"id": i, "name": "alex-{}".format(i)}
 data.append(tmp)
 
print(data)
def user_list(request):
 
 # user_list = data[0:10]
 # user_list = data[10:20]
 try:
 current_page = int(request.GET.get("page"))
 except Exception as e:
 current_page = 1
 
 per_page = 10
 
 # 数据总条数
 total_count = len(data)
 # 总页码
 total_page, more = divmod(total_count, per_page)
 if more:
 total_page += 1
 
 # 页面最多显示多少个页码
 max_show = 11
 half_show = int((max_show-1)/2)
 
 if current_page <= half_show:
 show_start = 1
 show_end = max_show
 else:
 if current_page + half_show >= total_page:
 show_start = total_page - max_show
 show_end = total_page
 else:
 show_start = current_page - half_show
 show_end = current_page + half_show
 
 # 数据库中获取数据
 data_start = (current_page - 1) * per_page
 data_end = current_page * per_page
 
 user_list = data[data_start:data_end]
 
 # 生成页面上显示的页码
 page_html_list = []
 # 加首页
 first_li = '<li><a href="/user_list/?page=1" rel="external nofollow" >首页</a></li>'
 page_html_list.append(first_li)
 # 加上一页
 if current_page == 1:
 prev_li = '<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >上一页</a></li>'
 else:
 prev_li = '<li><a href="/user_list/?page={}" rel="external nofollow" rel="external nofollow" rel="external nofollow" >上一页</a></li>'.format(current_page - 1)
 page_html_list.append(prev_li)
 for i in range(show_start, show_end+1):
 if i == current_page:
 li_tag = '<li class="active"><a href="/user_list/?page={0}" rel="external nofollow" rel="external nofollow" >{0}</a></li>'.format(i)
 else:
 li_tag = '<li><a href="/user_list/?page={0}" rel="external nofollow" rel="external nofollow" >{0}</a></li>'.format(i)
 page_html_list.append(li_tag)
 
 # 加下一页
 if current_page == total_page:
 next_li = '<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >下一页</a></li>'
 else:
 next_li = '<li><a href="/user_list/?page={}" rel="external nofollow" rel="external nofollow" rel="external nofollow" >下一页</a></li>'.format(current_page+1)
 page_html_list.append(next_li)
 
 # 加尾页
 page_end_li = '<li><a href="/user_list/?page={}" rel="external nofollow" rel="external nofollow" rel="external nofollow" >尾页</a></li>'.format(total_page)
 page_html_list.append(page_end_li)
 
 page_html = "".join(page_html_list)
 
 return render(request, "user_list.html", {"user_list": user_list, "page_html": page_html})

2、封装保存版

class Pagination(object):
 def __init__(self, current_page, total_count, base_url, per_page=10, max_show=11):
 """
 :param current_page: 当前页
 :param total_count: 数据库中数据总数
 :param per_page: 每页显示多少条数据
 :param max_show: 最多显示多少页
 """
 try:
 current_page = int(current_page)
 except Exception as e:
 current_page = 1
 
 self.current_page = current_page
 self.total_count = total_count
 self.base_url = base_url
 self.per_page = per_page
 self.max_show = max_show
 
 # 总页码
 total_page, more = divmod(total_count, per_page)
 if more:
 total_page += 1
 
 half_show = int((max_show - 1) / 2)
 self.half_show = half_show
 self.total_page = total_page
 
 @property
 def start(self):
 return (self.current_page - 1) * self.per_page
 
 @property
 def end(self):
 return self.current_page * self.per_page
 
 def page_html(self):
 
 if self.current_page <= self.half_show:
 show_start = 1
 show_end = self.max_show
 else:
 if self.current_page + self.half_show >= self.total_page:
 show_start = self.total_page - self.max_show
 show_end = self.total_page
 else:
 show_start = self.current_page - self.half_show
 show_end = self.current_page + self.half_show
 
 # 生成页面上显示的页码
 page_html_list = []
 # 加首页
 first_li = '<li><a href="{}?page=1" rel="external nofollow" >首页</a></li>'.format(self.base_url)
 page_html_list.append(first_li)
 # 加上一页
 if self.current_page == 1:
 prev_li = '<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >上一页</a></li>'
 else:
 prev_li = '<li><a href="{0}?page={1}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >上一页</a></li>'.format(self.base_url, self.current_page - 1)
 page_html_list.append(prev_li)
 for i in range(show_start, show_end + 1):
 if i == self.current_page:
 li_tag = '<li class="active"><a href="{0}?page={1}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >{1}</a></li>'.format(self.base_url, i)
 else:
 li_tag = '<li><a href="{0}?page={1}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >{1}</a></li>'.format(self.base_url, i)
 page_html_list.append(li_tag)
 # 加下一页
 if self.current_page == self.total_page:
 next_li = '<li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >下一页</a></li>'
 else:
 next_li = '<li><a href="{0}?page={1}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >下一页</a></li>'.format(self.base_url, self.current_page + 1)
 page_html_list.append(next_li)
 
 # 加尾页
 page_end_li = '<li><a href="{0}?page={1}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >尾页</a></li>'.format(self.base_url, self.total_page)
 page_html_list.append(page_end_li)
 return "".join(page_html_list)

3、封装保存版使用指南

def user_list(request):
 pager = Pagination(request.GET.get("page"), len(data), request.path_info)
 user_list = data[pager.start:pager.end]
 page_html = pager.page_html()
 return render(request, "user_list.html", {"user_list": user_list, "page_html": page_html})

二、Django内置分页

1、内置分页view部分

from django.shortcuts import render
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
L = []
for i in range(999):
 L.append(i)
def index(request):
 current_page = request.GET.get('p')
 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
 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, 'index.html', {'posts': posts})　

2、内置分页HTML部分

<!DOCTYPE html>
<html>
<head lang="en">
 <meta charset="UTF-8">
 <title></title>
</head>
<body>
<ul>
 {% for item in posts %}
 <li>{{ item }}</li>
 {% endfor %}
</ul>
 
<div class="pagination">
 <span class="step-links">
 {% if posts.has_previous %}
 <a href="?p={{ posts.previous_page_number }}" rel="external nofollow" >Previous</a>
 {% endif %}
 <span class="current">
 Page {{ posts.number }} of {{ posts.paginator.num_pages }}.
 </span>
 {% if posts.has_next %}
 <a href="?p={{ posts.next_page_number }}" rel="external nofollow" >Next</a>
 {% endif %}
 </span>
</div>
</body>
</html>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。