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>