Django内置分页

准备工作

import os

if __name__ == '__main__':
    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "new_pagedemo.settings")

    import django
    django.setup()

    from app01 import models

    # 列表生成式, 批量生成数据
    create_list = (models.Book(title="book_%s" % i, price=i * i) for i in range(501,601))
    # bulk_create()创建大量数据时使用
    models.Book.objects.bulk_create(create_list)

学习研究

from app01.models import Book
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger


def index(request):
    # 分页器的使用:
    book_list = Book.objects.all()             # 总数据
    paginator = Paginator(book_list, 10)       # 传入总数据和每一页显示多少数据

    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，假如没有12页和不正经的输入
    page=paginator.page(12)                    # error:EmptyPage
    page=paginator.page("z")                   # error:PageNotAnInteger
    return HttpResponse('ok')

使用

from app01.models import *
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger


def index(request):
    book_list = Book.objects.all()        # 总数据
    paginator = Paginator(book_list, 10)  # 总数居和一页显示多少数据
    page = request.GET.get('page', 1)     # 获取当前页码
    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})

<!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>

index.html

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>30:

        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())

扩展