一、分页器对象
from django.core.paginator import Paginator,EmptyPage
book_list = Book.objects.all() #假设有100条数据
#分页器 每页展示条数：8条
paginator = Paginator(book_list, 8) #返回Paginator对象
# print(paginator.count) #数据总条数 100
# print(paginator.num_pages) #总页数 13
# print(paginator.page_range) #页码的列表 range(1,14)
current_page = int(request.GET.get('page')) #拿到前端传的页码 url: http://localhost:8000/index?page=3
二、template中：当前页数据对象
curr_pg_obj = paginator.page(current_page) #拿到当前页的数据对象
#下面两种方式取数据
1,curr_pg_obj.object_list #QuerySet只有8条数据
2,for item in curr_pg_obj:
print(item)
-----------template模板-----------
循环页码：页数paginator.num_pages
循环内容：当前页对象curr_pg_obj
for pg in pages:
if pg=curr_pg
print(选中的pg)
else
print(pg)
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# curr_pg_obj.has_next() 是否有下一页
# curr_pg_obj.next_page_number() 下一页页码
# curr_pg_obj.has_previous() 是否有上一页
# curr_pg_obj.previous_page_number() 上一页的页码
# 抛错
#page=paginator.page(99) # error:EmptyPage
#page=paginator.page("z") # error:PageNotAnInteger
<!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 curr_pg_obj %} <li>{{ book.title }} -----{{ book.price }}</li> {% endfor %} </ul> <ul class="pagination" id="pager"> {% if curr_pg_obj.has_previous %} <li class="previous"><a href="/index/?page={{ curr_pg_obj.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 curr_pg_obj.has_next %} <li class="next"><a href="/index/?page={{ curr_pg_obj.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>
