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, PageNotAnInteger
def index(request):
'''
批量导入数据: Booklist=[]
for i in range():
Booklist.append(Book(title="book"+str(i),price=+i*i))
Book.objects.bulk_create(Booklist)
''' '''
分页器的使用: book_list=Book.objects.all() paginator = Paginator(book_list, ) # 创建一个分页器对象，按照页显示10条数据对book_list分页 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() #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() 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() # error:EmptyPage #page=paginator.page("z") # error:PageNotAnInteger
''' book_list=Book.objects.all() paginator = Paginator(book_list, )
page = request.GET.get('page',)
currentPage=int(page) try:
print(page)
book_list = paginator.page(page)
except PageNotAnInteger:
book_list = paginator.page()
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（动态控制页码）
def index(request):
book_list=Book.objects.all()
paginator = Paginator(book_list, )
page = request.GET.get('page',)
currentPage=int(page)
# 如果页数十分多时，换另外一种显示方式
if paginator.num_pages>:
if currentPage-<:
pageRange=range(,)
elif currentPage+>paginator.num_pages:
pageRange=range(currentPage-,paginator.num_pages+)
else:
pageRange=range(currentPage-,currentPage+)
else:
pageRange=paginator.page_range
try:
print(page)
book_list = paginator.page(page)
except PageNotAnInteger:
book_list = paginator.page()
except EmptyPage:
book_list = paginator.page(paginator.num_pages)
return render(request,"index.html",locals())