一、Django的分页器（paginator）
view
from django.shortcuts import render,HttpResponse# Create your views here.from app01.models import *from django.core.paginator import Paginator, EmptyPage, PageNotAnIntegerdef index(request): ???‘‘‘ ???批量导入数据: ???Booklist=[] ???for i in range(100): ???????Booklist.append(Book(title="book"+str(i),price=30+i*i)) ???Book.objects.bulk_create(Booklist) ???‘‘‘ ???‘‘‘分页器的使用: ???book_list=Book.objects.all() ???paginator = Paginator(book_list, 10) ???print("count:",paginator.count) ??????????#数据总数 ???print("num_pages",paginator.num_pages) ???#总页数 ???print("page_range",paginator.page_range) ?#页码的列表 ???page1=paginator.page(1) #第1页的page对象 ???for i in page1: ????????#遍历第1页的所有数据对象 ???????print(i) ???print(page1.object_list) #第1页的所有数据 ???page2=paginator.page(2) ???print(page2.has_next()) ???????????#是否有下一页 ???print(page2.next_page_number()) ???#下一页的页码 ???print(page2.has_previous()) ???????#是否有上一页 ???print(page2.previous_page_number()) #上一页的页码 ???# 抛错 ???#page=paginator.page(12) ??# error:EmptyPage ???#page=paginator.page("z") ??# error:PageNotAnInteger ???‘‘‘ ???book_list=Book.objects.all() ???paginator = Paginator(book_list, 10) ???page = request.GET.get(‘page‘,1) ???currentPage=int(page) ???try: ???????print(page) ???????book_list = paginator.page(page) ???except PageNotAnInteger: ???????book_list = paginator.page(1) ???except EmptyPage: ???????book_list = paginator.page(paginator.num_pages) ???return render(request,"index.html",{"book_list":book_list,"paginator":paginator,"currentPage":currentPage})index.html
<!DOCTYPE html><html lang="en"><head> ???<meta charset="UTF-8"> ???<title>Title</title> ???<link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" ???integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous"></head><body><div class="container"> ???<h4>分页器</h4> ???<ul> ???????{% for book in book_list %} ???????????<li>{{ book.title }}-------{{ book.price }}</li> ???????{% endfor %} ???</ul> ???<ul class="pagination" id = "pager"> ???????{% if book_list.has_previous %} ???????????<li class="previous"><a href="/index/?page={{ book_list.previous_page_number }}">上一页</a> </li> ???????{% else %} ???????????<li class="previous disabled"><a href="#">上一页</a> </li> ???????{% endif %} ???{% for num in paginator.page_range %} ???????{% ?if num == currentPage %} ???????????<li class="item active"><a href="/index/?page={{ num }}">{{ num }}</a> </li> ???????{% else %} ???????<li class="item"><a href="/index/?page={{ num }}">{{ num }}</a> </li> ???????{% endif %} ???{% endfor %} ???{% if book_list.has_next %} ???????<li class="next"><a href="/index/?page={{ book_list.next_page_number }}">下一页</a> </li> ???{% else %} ???????<li class="next disabled"><a href="#">下一页</a> </li> ???{% endif %} ???</ul></div></body></html>
扩展
def index(request): ???book_list=Book.objects.all() ???paginator = Paginator(book_list, 15) ???page = request.GET.get(‘page‘,1) ???currentPage=int(page) ???# ?如果页数十分多时，换另外一种显示方式 ???if paginator.num_pages>11: ???????if currentPage-5<1: ???????????pageRange=range(1,11) ???????elif currentPage+5>paginator.num_pages: ???????????pageRange=range(currentPage-5,paginator.num_pages+1) ???????else: ???????????pageRange=range(currentPage-5,currentPage+5) ???else: ???????pageRange=paginator.page_range ???try: ???????print(page) ???????book_list = paginator.page(page) ???except PageNotAnInteger: ???????book_list = paginator.page(1) ???except EmptyPage: ???????book_list = paginator.page(paginator.num_pages) ???return render(request,"index.html",locals())
Web框架开发-Django-分页器
原文地址：https://www.cnblogs.com/mike-liu/p/9769984.html