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 ""