11.Django的分页器paginator

时间 2019-11-12

标签 11.django django 分页 paginator 栏目 Python 繁體版

原文原文链接

Django的分页器paginatorcss

01.views:html

 1 from django.shortcuts import render, HttpResponse, redirect  2 from app01.models import Book  3 from django.core.paginator import Paginator, EmptyPage # 引入分页器  4  5  6 def index(request):  7 '''  8 批量插入数据  9 book_list = [] 10 for i in range(100): # 插入数据 11 book = Book(name="book_%s" % i,price=i*i) 12 book_list.append(book) # 添加book对象到列表里 13 14 Book.objects.bulk_create(book_list) # 批量保存数据 15 16 :param request: 17 :return: 18 ''' 19 20 　　book_list = Book.objects.all() 21 22 # 分页器 23 24 　　paginator = Paginator(book_list, 8) # 参数1：数据/参数2：每页数据条数 25 26 　　print("count:", paginator.count) # 数据总数 27 　　print("num_pages:", paginator.num_pages) # 总页数 28 　　print("page_range:", paginator.page_range) # 页码的列表 29 30 　　current_page_num = int(request.GET.get("page", 1)) # 动态的拿到第几页的数据，默认拿到第一页 31 　　print("Num:", current_page_num) 32 33 # 设置分页样式，前6也，后5也无变化/中间的样式：选择的页数始终位于分页器中央 34 if paginator.num_pages > 9: # 当总页数大于9 35 36 　　if current_page_num - 5 < 1: # 设置前6页不变 37 　　　　page_range = range(1, 11) # 设置显示的页码列表11个 38 　　elif current_page_num + 5 > paginator.num_pages: 39 　　　　page_range = range(paginator.num_pages - 11, paginator.num_pages + 1) 40 　　else: 41 　　　　page_range = range(current_page_num - 5, current_page_num + 6) 42 else: 43 　　page_range = paginator.page_range 44 45 try: # 若是分页器超出页数或小于页数，捕获异常 46 47 48 　　current_page = paginator.page(current_page_num) # 拿到第几页的配置对象 49 50 # page1 = paginator.page(1) # 拿到第1页的数据的对象 51 # 52 # #显示某一页具体数据的两种方式 53 # print("object_list",page1.object_list) # 拿到第1页的数据 54 55 　　for i in current_page: # 迭代拿第一页的每条数据对象 56 　　print(i) 57 58 except EmptyPage as e: 59 　　current_page = paginator.page(1) 60 61 return render(request, 'index.html', locals())

02.index.html:django

 1 <!DOCTYPE html>  2 <html lang="en">  3 <head>  4 <meta charset="UTF-8">  5 <title>index</title>  6 <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css"  7 integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">  8 </head>  9 <body> 10 {#每页数据内容#} 11 <ul> 12 {% for book in current_page %} 13 <li>{{ book.name }}:{{ book.price }}</li> 14 {% endfor %} 15 </ul> 16 17 {#分页器#} 18 <nav aria-label="Page navigation"> 19 <ul class="pagination"> 20 {% if current_page.has_previous %}{# 若是分页器配置对象是否还有上一页 #} 21 <li> 22 <a href="?page={{ current_page.previous_page_number }}" aria-label="Previous">{# 若是有上一页，点击上一页则会跳转上一页的page地址 #} 23 <span aria-hidden="true">&laquo;</span> 24 </a> 25 </li> 26 {% else %}{# 若是没有上一页，就对上一页按钮进行设置class="disabled"，隐藏按钮 #} 27 <li class="disabled"> 28 <a href="" aria-label="Previous">{# 取消跳转地址 #} 29 <span aria-hidden="true">&laquo;</span> 30 </a> 31 </li> 32 {% endif %} 33 34 {% for item in page_range %}{# 循环页码列表page_range，拿到每页页码 #} 35 {% if current_page_num == item %}{# 拿到当前页数 #} 36 <li class="active"><a href="?page={{ item }}">{{ item }}</a></li>{# bootstrap样式avtive为选择器，a标签跳转到选择的页数 #} 37 {% else %} 38 <li><a href="?page={{ item }}">{{ item }}</a></li>{# 没有选中的不给active #} 39 {% endif %} 40 {% endfor %} 41 {% if current_page.has_next %}{# 判断是否有下一个值 #} 42 <li> 43 <a href="?page={{ current_page.next_page_number }}" aria-label="Next"> 44 <span aria-hidden="true">&raquo;</span> 45 </a> 46 </li> 47 {% else %} 48 <li class="disabled"> 49 <a href="" aria-label="Next"> 50 <span aria-hidden="true">&raquo;</span> 51 </a> 52 </li> 53 {% endif %} 54 55 </ul> 56 </nav> 57 </body> 58 </html>