简单的分页器实现

urlpatterns = [
    url(r‘^customer/‘, views.customer, name=‘customer‘),
]

from .pagination import Pagination
def customer(request):
    customer_obj = Customer.objects.all()
    try:
        page = int(request.GET.get(‘page‘, 1))
    except Exception:
        page = 1
    pag_obj = Pagination(page=page, page_count=customer_obj.count(), qd=request.GET.copy(), per_num=3, max_show=3)
    customer_obj = customer_obj[pag_obj.start:pag_obj.end]
    return render(request, ‘customer.html‘, locals())

# -*- coding: utf-8 -*-
# __author__ = "maple"
from django.http.request import QueryDict


class Pagination(object):
    def __init__(self, page, page_count, qd=None, per_num=10, max_show=11):
        """
        分页
        :param page:当前的页码数
        :param page_count: 分页的总数据
        :param per_num: 每页的数据条数
        :param max_show: 最大展示页码（一页展示的页码数）
        """
        self.page = page
        self.per_num = per_num
        self.page_count = page_count
        self.max_show = max_show
        # 数据切片控制
        # 每页几条数据
        # per_num = 2
        # 总数据
        # self.page_count
        # 总共的页数
        self.page_count, remainder = divmod(self.page_count, self.per_num)
        if remainder:
            self.page_count += 1
        # page_nums = range(1, page_nums + 1)
        # 起始
        """
        第几页     切片起始索引     切片终止索引
          1           0                10   #customers[0:10]
          2           10               20
        """
        # 切片起始索引
        self.start = (self.page - 1) * self.per_num
        # 切片终止索引
        self.end = self.page * self.per_num
        # 切片
        # customers = customers[self.start:self.end]

        # 页码控制
        # 展示的页码数
        # max_show = 3
        half_show = self.max_show // 2
        # 起始页码
        self.start_page = self.page - half_show
        # 终止页码
        self.end_page = self.page + half_show

        # 如果总页面数小于每页最大展示的页码数
        # 就返回所有的页码数
        if self.page_count <= self.max_show:
            self.start_page = 1
            self.end_page = self.page_count
        # 如果最后一个页码的数字大于总页码数
        # 就将终止页码定位最后页码数
        elif self.end_page > self.page_count:
            self.start_page = self.end_page - self.max_show
            self.end_page = self.page_count

        # 控制起始页码不能小于等于零
        if self.start_page < 1:
            self.start_page = 1
            # 当起始页码为1时，控制页码长度为最大展示页码数
            self.end_page = self.max_show
        # 如果不传request.GET，则实例化一个可以修改的request.GET对象
        if not qd:
            """
            记录跳转到分页（第二页）之前的界面的url全地址
            """
            qd = QueryDict(mutable=True)
        self.qd = qd

    @property
    def page_html(self):
        # self.html = []  # 分页标签拼接
        # # 追加上一页标签到列表里
        # # 如果page-1为零时，禁止点击
        # if self.page == 1:
        #     self.html.append(
        #         f‘<nav aria-label="Page navigation"><ul class="pagination"><li class="disabled"></li>‘)
        # else:
        #     self.html.append(
        #         f‘<nav aria-label="Page navigation"><ul class="pagination"><li><a href="?page={self.page - 1}" aria-label="Previous"><span aria-hidden="true">&laquo;</span></a></li>‘)
        #
        # # 追加页码a标签
        # for n in range(self.start_page, self.end_page + 1):
        #     if n == self.page:
        #         li = f‘<li class="active"><a href="?page={n}">{n}</a></li>‘
        #     else:
        #         li = f‘<li><a href="?page={n}">{n}</a></li>‘
        #     self.html.append(li)
        #
        # # 追加下一页标签到列表里
        # if self.page == self.page_count:
        #     self.html.append(
        #         f‘<li class="disabled" ></li></ul></nav>‘)
        # else:
        #     self.html.append(
        #         f‘<li><a href="?page={self.page + 1}" aria-label="Next"><span aria-hidden="true">&raquo;</span></a></li></ul></nav>‘)
        # return ‘‘.join(self.html)

        self.html = []  # 分页标签拼接
        # 追加上一页标签到列表里
        # 如果page-1为零时，禁止点击
        if self.page == 1:
            self.html.append(
                f‘<nav aria-label="Page navigation"><ul class="pagination"><li class="disabled"><a aria-label="Previous"><span aria-hidden="true">&laquo;</span></a></li>‘)
        else:
            self.qd[‘page‘] = self.page - 1
            self.html.append(
                f‘<nav aria-label="Page navigation"><ul class="pagination"><li><a href="?{self.qd.urlencode()}" aria-label="Previous"><span aria-hidden="true">&laquo;</span></a></li>‘)

        # 追加页码a标签
        for n in range(self.start_page, self.end_page + 1):
            self.qd[‘page‘] = n
            if n == self.page:
                li = f‘<li class="active"><a href="?{self.qd.urlencode()}">{n}</a></li>‘
            else:
                li = f‘<li><a href="?{self.qd.urlencode()}">{n}</a></li>‘
            self.html.append(li)

        # 追加下一页标签到列表里
        if self.page == self.page_count:
            self.html.append(
                f‘<li class="disabled"><a aria-label="Next"><span aria-hidden="true">&raquo;</span></a></li></ul></nav>‘)
        else:
            self.qd[‘page‘] = self.page + 1
            self.html.append(
                f‘<li><a href="?{self.qd.urlencode()}" aria-label="Next"><span aria-hidden="true">&raquo;</span></a></li></ul></nav>‘)

        return ‘‘.join(self.html)

{{ pag_obj.page_html|safe }}