django之分页查询

1.自定义分页函数

#第一个参数:request对象;第二个参数:需要分页的数据;第三个参数:每页显示的数据个数;第四个参数:需要返回的网页---->"myadmin/user/index.html"

#导入分页类

from django.core.paginator import Paginator

def page(r,data,pagenum,path):
    # 实例化分页类
    paginator = Paginator(data,pagenum)
    # 获取当前页码
    p = int(r.GET.get('p',1))
    # 获取当前页码的数据
    pagedata = paginator.page(p)
    # 获取总页码数
    pagecount = paginator.num_pages
    # 获取页码范围,循环
    pagerange = paginator.page_range
    # 对页码进行判断,防止页码小于1或大于最大页码数
    if p < 1:
        p = 1
    if p > pagecount:
        p = pagecount
    # 返回页码循环数,在模板里遍历
    if p <= 5:
        page_list = pagerange[:10]
    elif p + 5 > pagecount:
        page_list = pagerange[-10:]
    else:
        page_list = pagerange[p-5:p+4]
    # 返回分页后的数据,分页范围循环,当前页码
    return render(r,path,{'info':pagedata,'page_list':page_list,'p':p})
2.视图函数中 调用函数,传递实参

　　　return page(request,data,20,'myadmin/user/userlist.html')

　3.模板中遍历数据

<div class="am-u-sm-12">
    <table width="100%" class="am-table am-table-compact am-table-striped tpl-table-black " id="example-r">
        <thead>
        <tr>
            <th>id</th>
            <th>头像</th>
            <th>用户名</th>
            <th>密码</th>
            <th>手机号码</th>
            <th>年龄</th>
            <th>性别</th>
            <th>状态</th>
            <th>邮箱</th>
            <th>添加时间</th>
            <th>操作</th>
        </tr>
        </thead>
        <tbody>
        {% for i in info %}
        <tr class="gradeX">
            <td>{{ i.id }}</td>
            <td><img src="{{ i.pic_url }}" alt="" width="50"></td>
            <td>{{ i.username }}</td>
            <td>******</td>
            <td>{{ i.phone }}</td>
            <td>{{ i.age }}</td>
            <td>
                {% if i.sex == '0' %}女
                    {% else %}男
                {% endif %}
            </td>
            <td>
                {% if i.status == 0 %}正常
                    {% else %}异常
                {% endif %}
            </td>
            <td>{{ i.email }}</td>
            <td>{{ i.addtime }}</td>
            <td>
                <div class="tpl-table-black-operation">
                    <a href="{% url 'admin_useredit' i.id %}">
                        <i class="am-icon-pencil"></i> 编辑
                    </a>
                    <a href="{% url 'admin_userdel' i.id %}" class="tpl-table-black-operation-del">
                        <i class="am-icon-trash"></i> 删除
                    </a>
                </div>
            </td>
        </tr>
        {% endfor %}
        <!-- more data -->
        </tbody>
    </table>
</div>
<div class="am-u-lg-12 am-cf">
    <div class="am-fr">
        <ul class="am-pagination tpl-pagination">
            <li>
                <a href="?p={{p|add:-1}}">«</a>
            </li>
            {% for i in page_list %}
            <li {% if p == i %} class="am-active" {% endif %}>
                <a href="?p={{i}}&types={{ request.GET.types }}&keywords={{ request.GET.keywords }}">{{i}}</a>

            </li>
            {% endfor %}
            <li>
                <a href="?p={{p|add:1}}">»</a>
            </li>
        </ul>
    </div>
</div>