django内置分页功能扩展

实现自定制页码数类型
class myPaginator(Paginator):
    def __init__(self,curr_page,per_page_num,*args,**kwargs):
        self.curr_page=int(curr_page)
        self.per_page_num=int(per_page_num)

        super(myPaginator,self).__init__(*args,**kwargs)

    def page_num(self):
        curr_page=self.curr_page  #当前页面
        full_page=self.num_pages   #总页数
        per_page_num=self.per_page_num  #显示页码数
        half_per_page=int(per_page_num/2)
        print(curr_page,full_page,per_page_num,half_per_page)

        if curr_page<=half_per_page:
            return range(1,per_page_num+1)
        elif curr_page>=(full_page-half_per_page):
            return range(full_page-per_page_num,full_page)
        else:
            return range(curr_page-half_per_page,curr_page+half_per_page)

veiws：--------------------------------------------------------------------------------------

paginator=myPaginator(curr_page,10,root_lst,10)#（当前页码，一页中显示的页码数个数，内容，一页中的内容）
try:
    posts=paginator.page(curr_page)
except EmptyPage:
    posts=paginator.page(1)
except PageNotAnInteger:
    posts=paginator.page(paginator.num_pages)

html:---------------------------------------------------------------------------------------------------

{% for foo in posts.object_list %}  #遍历一页中的内容
    <li>{{ foo.name }} - {{ foo.age }}</li>   #一页中的其中一条内容
{% endfor %}
{% if posts.has_previous %}  #当不存在上一页时的处理方法
    <a href="/index?p={{ posts.previous_page_number }}">上一页</a> 
    {% else %}
    <a href="#">上一页</a>
{% endif %}

{% for i in posts.paginator.page_num  %}   #显示的页码
    {% if i == posts.number %}
        <span style="display: inline-block;width:20px">{{i}}</span>
    {% else %}
        <a href="/index?p={{i}}" style="display: inline-block;width:20px">{{i}}</a>
    {% endif %}
{% endfor %}

{% if posts.has_next %}    #当不存在下一页时的处理方法
    <a href="/index?p={{ posts.next_page_number }}">下一页</a>
    {% else %}
    <a href="#">下一页</a>
{% endif %}