django分页扩展之显示上下页和标签每页的跳转

views

class CustomPaginator(Paginator):
    def __init__(self,current_page, per_pager_num,*args,**kwargs):
        # 当前页
        self.current_page = int(current_page)
        # 最多显示的页码数量 11
        self.per_pager_num = int(per_pager_num)
        super(CustomPaginator,self).__init__(*args,**kwargs)#继承Paginator对象，没对其内部改变


    def pager_num_range(self):
        # 当前页
        #self.current_page
        # 最多显示的页码数量 11
        #self.per_pager_num
        # 总页数特别多
        # self.num_pages
        if self.num_pages < self.per_pager_num:
            return range(1,self.num_pages+1)
        # 总页数特别多 5
        part = int(self.per_pager_num/2)
        if self.current_page <= part:
            return range(1,self.per_pager_num+1)
        if (self.current_page + part) > self.num_pages:
            return range(self.num_pages-self.per_pager_num+1,self.num_pages+1)
        return range(self.current_page-part,self.current_page+part+1)

def index1(request):

    # 全部数据：USER_LIST，=》得出共有多少条数据
    # per_page: 每页显示条目数量
    # count:    数据总个数
    # num_pages:总页数
    # page_range:总页数的索引范围，如: (1,10),(1,200)
    # page:     page对象（是否具有下一页；是否有上一页；）
    current_page = request.GET.get('p')
    # Paginator对象
    # paginator = Paginator(USER_LIST, 10)
    paginator = CustomPaginator(current_page,11,USER_LIST, 10)
    try:
        # Page对象
        posts = paginator.page(current_page)#这里进行一个切片
        # has_next              是否有下一页
        # next_page_number      下一页页码
        # has_previous          是否有上一页
        # previous_page_number  上一页页码
        # object_list           分页之后的数据列表，已经切片好的数据
        # number                当前页
        # paginator             paginator对象
    except PageNotAnInteger:#表示填的不是整数
        posts = paginator.page(1)
    except EmptyPage:#如果空页数，那么就填总页数
        posts = paginator.page(paginator.num_pages)

    return render(request,'index1.html',{'posts':posts})


html

index1

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <ul>
        {% for row in posts.object_list %}
            <li>{{ row.name }}-{{ row.age }}</li>
        {% endfor %}
    </ul>
   {% include 'include/pager.html' %}
{#    {% if posts.has_previous %}#}
{#        <a href="/index.html?p={{ posts.previous_page_number }}">上一页</a>#}
{#        {% else %}#}
{#        <a href="#">上一页</a>#}
{#    {% endif %}#}
{##}
{#    {% if posts.has_next %}#}
{#        <a href="/index.html?p={{ posts.next_page_number }}">下一页</a>#}
{#    {% endif %}#}
{#    <span>#}
{#        {{ posts.number }}-{{ posts.paginator.num_pages }}#}
{#    </span>#}
</body>
</html>

pager

{#当没有上一页的时候，让显示上一页但是点不动#}
{% if posts.has_previous %}
    <a href="/index.html?p={{ posts.previous_page_number }}">上一页</a>
    {% else %}
    <a href="#">上一页</a>
{% endif %}

{% for i in posts.paginator.pager_num_range %}
    {% if i == posts.number  %}
        <a style="font-size: 30px;" href="/index1.html?p={{ i }}">{{ i }}</a>
    {% else %}
        <a href="/index1.html?p={{ i }}">{{ i }}</a>
    {% endif %}
{% endfor %}

{% if posts.has_next %}
    <a href="/index.html?p={{ posts.next_page_number }}">下一页</a>
{% endif %}
<span>
    {{ posts.number }}-{{ posts.paginator.num_pages }}
{#    {{ posts.paginator.num_pages }}总页数#}
</span>

django分页扩展之显示上下页和标签每页的跳转

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