• 自定义分页


    html

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <title>用户列表</title>
        <link rel="stylesheet" href="/static/plugins/bootstrap-3.3.7/css/bootstrap.min.css">
    </head>
    <body>
    
    
    <div class="container">
        <table class="table table-bordered">
            <thead>
            <tr>
                <th>ID</th>
                <th>姓名</th>
            </tr>
            </thead>
            <tbody>
            {% for user in users %}
                <tr>
                    <td>{{ user.id 
    
     }}</td>
                    <td>{{ user.name 
    
     }}</td>
                </tr>
            {% endfor %}
            </tbody>
        </table>
        <div class="pull-right">
            {#分页开始#}cf 
            <nav aria-label="Page navigation">
                <ul class="pagination">
    {#                {% for i in total_page_num %}#}
    {#                    <li><a href="/user_list/?page={{ i }}">{{ i }}</a></li>#}
    {#                {% endfor %}#}
                    {{ page_html|safe }}
                </ul>
            </nav>
        </div>
    
    </div>
    
    </body>
    </html>
    

      

    views中

    from django.shortcuts import render
    
    # Create your views here.
    
    data = []
    for i in range(1, 302):
        tmp = {"id": i, "name": "alex-{}".format(i)}
        data.append(tmp)
    # data
    
    
    # def user_list(request):
    #     try:
    #         page_num = int(request.GET.get("page"))  # 字符串类型,所以要转成int
    #     except Exception as e:
    #         page_num = 1
    #     # 没有传页码, 默认展示第一页
    #     # if not page_num:
    #     #     page_num = 1
    #     # 每一页显示10条记录
    #     per_page_num = 10
    #     # user_list = data[0:10]  1  (1-1) *10   1*10
    #     # user_list = data[10:20] 2  (2-1) *10   2*10
    #     # user_list = data[20:30] 3   (n-1)*10   n*10
    #
    #     # 总数据个数
    #     total_count = len(data)
    #     # 总共有多少页
    #     total_page_num, more = divmod(total_count, per_page_num)
    #     if more:
    #         total_page_num += 1
    #     # 如果你输入的页码数超过我的总页数,我默认返回最后一页
    #     if page_num > total_page_num:
    #         page_num = total_page_num
    #
    #     # 最多显示多少页码
    #     max_show = 11
    #     half_show = int((max_show-1)/2)
    #     # 页面上页码从哪儿开始
    #     page_start = page_num - half_show
    #     # 页面上页码最多展示到哪一个
    #     page_end = page_num + half_show
    #
    #     # 如果当前页小于等于half_show, 默认从第一页展示到max_show
    #     if page_num <= half_show:
    #         page_start = 1
    #         page_end = max_show
    #     # 如果当前页大于等于总页数-half_show
    #     if page_num >= total_page_num - half_show:
    #         page_end = total_page_num
    #         page_start = total_page_num - max_show
    #
    #     # 生成前页码的HTML
    #     page_html_list = []
    #     # 放置一个首页按钮
    #     page_first_tmp =  '<li><a href="/user_list/?page=1">首页</a></li>'
    #     page_html_list.append(page_first_tmp)
    #
    #     # 加上一页按钮
    #     if page_num - 1 <= 0:  # 表示没有上一页
    #         page_prev_tmp = '<li class="disabled" ><a href="#">上一页</a></li>'
    #     else:
    #         page_prev_tmp = '<li><a href="/user_list/?page={}">上一页</a></li>'.format(page_num - 1)
    #     page_html_list.append(page_prev_tmp)
    #
    #     for i in range(page_start, page_end+1):
    #         # 如果是当前页,就加一个active的样式
    #         if i == page_num:
    #             tmp = '<li class="active"><a href="/user_list/?page={0}">{0}</a></li>'.format(i)
    #         else:
    #             tmp = '<li><a href="/user_list/?page={0}">{0}</a></li>'.format(i)
    #         page_html_list.append(tmp)
    #     # 加下一页按钮
    #     if page_num+1 > total_page_num:
    #         page_next_tmp = '<li class="disabled"><a href="#">下一页</a></li>'
    #     else:
    #         page_next_tmp = '<li><a href="/user_list/?page={}">下一页</a></li>'.format(page_num+1)
    #     page_html_list.append(page_next_tmp)
    #     # 添加一个尾页
    #     page_last_tmp = '<li><a href="/user_list/?page={}">尾页</a></li>'.format(total_page_num)
    #     page_html_list.append(page_last_tmp)
    #
    #     page_html = "".join(page_html_list)
    #
    #     # 去数据库取数据
    #     start = (page_num - 1) * per_page_num
    #     end = page_num * per_page_num
    #
    #     user_list = data[start:end]
    #
    #     return render(request, "user_list.html", {"user_list": user_list, "page_html": page_html})
    
    
    def user_list(request):
        page_num = request.GET.get("page")
        path = request.path_info
        # request.get_full_path()  # 带参数的URL
        from tools.mypage import MyPage
        page = MyPage(page_num, len(data), path)
        page_html = page.page_html()
        return render(request, "user_list.html", {"user_list": data[page.start:page.end], "page_html": page_html})
    

      

    manage.py中

    """
    这个文件的使用指南
    """
    
    
    class MyPage(object):
    
        def __init__(self, page_num, total_count, base_url, per_page_num=10, max_show=11):
            """
            :param page_num: 当前页
            :param total_count: 数据总个数
            :param base_url: 分页页码跳转的URL
            :param per_page_num: 每一页显示多少条数据
            :param max_show: 页面上最多显示多少页码
            """
            # 实例化时传进来的参数
            try:
                self.page_num = int(page_num)  # 字符串类型,所以要转成int
            except Exception as e:
                self.page_num = 1
            self.total_count = total_count
            self.base_url = base_url
            self.per_page_num = per_page_num
            self.max_show = max_show
            # 根据传进来的参数,计算的几个值
            self.half_show = int((self.max_show - 1) / 2)
            # 总共有多少页
            self.total_page_num, more = divmod(self.total_count, self.per_page_num)
            if more:
                self.total_page_num += 1
    
        @property
        def start(self):
            return (self.page_num - 1) * self.per_page_num
    
        @property
        def end(self):
            return self.page_num * self.per_page_num
    
        def page_html(self):
            """
            返回页面上可以用的一段HTML
            一段可用的分页页码的HTML
            :return:
            """
            # 页面上页码从哪儿开始
            page_start = self.page_num - self.half_show
            # 页面上页码最多展示到哪一个
            page_end = self.page_num + self.half_show
            # 如果当前页小于等于half_show, 默认从第一页展示到max_show
            if self.page_num <= self.half_show:
                page_start = 1
                page_end = self.max_show
            # 如果当前页大于等于总页数-half_show
            if self.page_num >= self.total_page_num - self.half_show:
                page_end = self.total_page_num
                page_start = self.total_page_num - self.max_show
    
            # 生成前页码的HTML
            page_html_list = []
            # 放置一个首页按钮
            page_first_tmp =  '<li><a href="{}?page=1">首页</a></li>'.format( self.base_url)
            page_html_list.append(page_first_tmp)
    
            # 加上一页按钮
            if self.page_num - 1 <= 0:  # 表示没有上一页
                page_prev_tmp = '<li class="disabled" ><a href="#">上一页</a></li>'
            else:
                page_prev_tmp = '<li><a href="{0}?page={1}">上一页</a></li>'.format( self.base_url, self.page_num - 1)
            page_html_list.append(page_prev_tmp)
    
            for i in range(page_start, page_end+1):
                # 如果是当前页,就加一个active的样式
                if i == self.page_num:
                    tmp = '<li class="active"><a href="{0}?page={1}">{1}</a></li>'.format( self.base_url, i)
                else:
                    tmp = '<li><a href="{0}?page={1}">{1}</a></li>'.format( self.base_url, i)
                page_html_list.append(tmp)
            # 加下一页按钮
            if self.page_num+1 > self.total_page_num:
                page_next_tmp = '<li class="disabled"><a href="#">下一页</a></li>'
            else:
                page_next_tmp = '<li><a href="{0}?page={1}">下一页</a></li>'.format( self.base_url, self.page_num+1)
            page_html_list.append(page_next_tmp)
            # 添加一个尾页
            page_last_tmp = '<li><a href="{0}?page={1}">尾页</a></li>'.format( self.base_url, self.total_page_num)
            page_html_list.append(page_last_tmp)
    
            return "".join(page_html_list)
    

    详细解释后续更新。。。。。

      

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  • 原文地址:https://www.cnblogs.com/1996-11-01-614lb/p/8353459.html
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