class myPage():

    def __init__(self, page_num, total_count, url_prefix, per_page=10, max_page=11):

        """

       :param page_num: 当前页码数

       :param total_count: 数据总数

       :param url_prefix: a标签href的前缀

       :param per_page: 每页显示多少条数据

       :param max_page: 页面上最多显示几个页码

       """

        self.url_prefix = url_prefix

        self.max_page = max_page

        self.per_page = per_page

        total_page, m = divmod(total_count, per_page)

        if m > 0:

            total_page += 1

        self.total_page = total_page

        try:

            page_num = int(page_num)

            # 如果输入页码数过大，默认跳到最后一页

            if page_num > total_page:

                page_num = total_page

        except Exception as e:

            page_num = 1

        self.page_num = page_num

        self.data_start = (page_num - 1) * 10

        self.data_end = page_num * 10

        # 1. 先实现一半一半

        max_page = 11

        # 10. 如果数据量少，页数也少

        if total_page < max_page:

            self.max_page = total_page

        half_max_page = max_page // 2

        page_start = page_num - half_max_page

        page_end = page_num + half_max_page

        # 2. 特殊情况一：页码前面出现负值

        if page_start < 1:

            page_start = 1

            page_end = self.max_page

        # 3. 特殊情况二：页码后面出现空白页

        if page_end >= total_page:

            page_start = total_page - self.max_page + 1

            page_end = total_page

        self.page_start = page_start

        self.page_end = page_end

    @property

    def start(self):

        return self.data_start

    @property

    def end(self):

        return self.data_end

    def page_html(self):

        page_html_list = []

        # 9. 解决在首页处点前一页

        if self.page_num == 1:

            page_html_list.append(

                '<li class="disabled"><a href="#"><span aria-hidden="true">&laquo;</span></a></li>')

        else:

            page_html_list.append(

                '<li><a href="{0}?pages={1}"><span aria-hidden="true">&laquo;</span></a></li>'.format(self.url_prefix,

                                                                                                      self.page_num - 1))

        # 4. 加上首页

        page_html_list.append('<li><a href="{}?pages=1">首页</a></li>'.format(self.url_prefix))

        for i in range(self.page_start, self.page_end + 1):

            # 11. 对当前页加上活动active样式类

            if i == self.page_num:

                temp = '<li class="active"><a href="{0}?pages={1}">{1}</a></li>'.format(self.url_prefix, i)

            else:

                temp = '<li><a href="{0}?pages={1}">{1}</a></li>'.format(self.url_prefix, i)

            page_html_list.append(temp)

        # 5. 加上尾页

        page_html_list.append('<li><a href="{0}?pages={1}">尾页</a></li>'.format(self.url_prefix, self.total_page))

        # 8. 解决最后一页时点后一页

        if self.page_num == self.total_page:

            page_html_list.append(

                '<li class="disabled"><a href="#" aria-label="Next"><span aria-hidden="true">&raquo;</span></a></li>')

        else:

            page_html_list.append(

                '<li><a href="{0}?pages={1}" aria-label="Next"><span aria-hidden="true">&raquo;</span></a></li>'.format(

                    self.url_prefix,

                    self.page_num + 1))

        # 转成字符串

        page_html = "".join(page_html_list)

        return page_html

<div class="container">

    <table class="table table-bordered">

        <thead>

        <tr>

            <th>序号</th>

            <th>id</th>

            <th>部门名称</th>

        </tr>

        </thead>

        <tbody>

        {% for dept in depts %}

            <tr>

                <td>{{ forloop.counter }}</td>

                <td>{{ dept.id }}</td>

                <td>{{ dept.name }}</td>

            </tr>

        {% endfor %}

        </tbody>

    </table>

    <nav aria-label="Page navigation">

        <ul class="pagination">

            {{ page_html|safe }}

        </ul>

    </nav>

</div>

def depts(request):

    # 从相应模块中导入分页类

    from utils.myPage import myPage

    all_depts = models.Dept2.objects.all()

    page_num = request.GET.get("pages")

    total_num = models.Dept2.objects.all().count()

    # 实例化分页类

    page_obj = myPage(page_num, total_num, '/depts/', per_page=10, max_page=11)

    # 通过实例的变量从数据库中取出需要展示的数据

    ret = models.Dept2.objects.all()[page_obj.start:page_obj.end]

    # 由实例调用函数生成需要的HTML代码

    dept_page_html = page_obj.page_html()

    return render(request, "depts.html", {"depts": ret, "page_html": dept_page_html})