Django组件-分页器（django 分页插件）

Django组件-分页器（django 分页插件）

Django的分页器（paginator）

views.py

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})

views.py

index.html

index.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())

views.py

cnblog项目views.py

from django.shortcuts import render, redirect, HttpResponse# Create your views here.from .models import Bookfrom django.core.paginator import Paginator, EmptyPagedef index(request): # 批量导入数据 # book_list = [] # for i in range(100): # book = Book(title="book_%s" % i, price=i * i) # book_list.append(book) # Book.objects.bulk_create(book_list) # 批量插入多条数据 # return render(request, 'index.html', locals()) book_list = Book.objects.all() # QuerySet列表 # 分页器 paginator = Paginator(book_list, 10) print("数据总数:", paginator.count) print("总页数", paginator.num_pages) print("页码列表", paginator.page_range) current_page_num = int(request.GET.get("page", 1)) if paginator.num_pages > 11: if current_page_num - 5 < 1: page_range = range(1, 12) elif current_page_num + 5 > paginator.num_pages: page_range = range(paginator.num_pages - 10, paginator.num_pages + 1) else: page_range = range(current_page_num - 5, current_page_num + 6) else: page_range = paginator.page_range try: current_page = paginator.page(current_page_num) # 显示某一页具体数据的两种方式 print("object_list", current_page.object_list) for i in current_page: print(i) except EmptyPage as e: current_page = paginator.page(1) return render(request, "index.html", locals())

views.py

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