django【原生分页】

 1.urls.py
 url(r'^page2/',views.page2),
 2.views.py
 from django.core.paginator import Paginator,PageNotAnInteger,EmptyPage
 def page2(request):
     customer_list=models.UserType.objects.all()
     paginator=Paginator(customer_list,10)
     page = request.GET.get('p')
     try:
         customer_objs=paginator.page(page)
     except PageNotAnInteger:
         customer_objs=paginator.page(1)
     except EmptyPage:
         customer_objs=paginator.page(paginator.num_pages)
     return render(request,'page2.html',{'customer_list':customer_objs})
 3.page2.html
 {% load custom_tags %}
    <style>
         .active{
             background: gold;
         }
     </style>
  <table>
     <thead>
     <tr>
         <th>ID</th>
         <th>name</th>
     </tr>
     </thead>
     <tbody>
     {% for item in customer_list %}
         <tr>
             <td>{{ item.id }}</td>
             <td>{{ item.caption }}</td>
         </tr>
     {% endfor %}
     </tbody>
     </table>
 <br>
     <div class="pagination">
     <nav>
                 {% if  customer_list.has_previous %}
                     <span class="#"><a href="?p={{ customer_list.previous_page_number }}" aria-label="Previous"><span aria-hidden="true">«</span></a></span>
                 {% endif %}
                 {% for page_num in customer_list.paginator.page_range  %}
                     {% guess_page customer_list.number page_num %}
                 {% endfor %}
                 {% if customer_list.has_next %}
                     <span class="#"><a href="?p={{ customer_list.next_page_number }}" aria-label="Next"><span aria-hidden="true">»</span></a></span>
                 {% endif %}
     </nav>
     </div>
 4.自定义模板函数
    app01/templatetags/custom_tags.py
 from django import template
 from django.utils.html import format_html
 register=template.Library()
 @register.filter
 def _lower(val):
     print('-----val',val)
     return val.lower()
 @register.simple_tag
 def guess_page(current_page,loop_num):
         offset=abs(current_page-loop_num)
         if offset < 3:
             if current_page == loop_num:
                 page_ele='<span class="active"><a href="?p=%s">%s</a></span>'%(loop_num,loop_num)
             else:
                 page_ele='<span class=""><a href="?p=%s">%s</a></span>'%(loop_num,loop_num)
             return format_html(page_ele)
         else:
             return ""