python通用分页功能

实现：

 class Page:

     def __init__(self,current_page,data_count,per_page_count=10,pager_num=10):
         self.current_page = current_page
         self.data_count = data_count
         self.per_page_count = per_page_count
         self.pager_num = pager_num

     @property
     def start(self):
         return (self.current_page-1) * self.per_page_count

     @property
     def end(self):
         return self.current_page * self.per_page_count

     @property
     def total_count(self):
         total_num,remainder = divmod(self.data_count,self.per_page_count)
         if remainder:
             total_num += 1
         return total_num

     def page_str(self,base_url):
         page_list = []
         max = int((self.pager_num+1)/2)
         min = int((self.pager_num-1)/2)
         if self.total_count < self.pager_num:
             start_index = 1
             end_index = self.total_count + 1
         else:
             if self.current_page <= max:
                 start_index = 1
                 end_index = self.pager_num + 1
             else:
                 start_index = self.current_page - min
                 end_index = self.current_page + max
                 if self.current_page + max > self.total_count:
                     start_index = self.total_count - self.pager_num + 1
                     end_index = self.total_count + 1

         if self.current_page == 1:
             prev = '<a class="page" href="javascript:void(0);">上一页</a>'
         else:
             head = '<a class="page" href="%s?p=%s">首页</a>' % (base_url,1)
             page_list.append(head)
             prev = '<a class="page" href="%s?p=%s">上一页</a>' % (base_url,self.current_page - 1)
         page_list.append(prev)

         for i in range(start_index, end_index):
             if i == self.current_page:
                 temp = '<a class="page active" href="%s?p=%s">%s</a>' % (base_url,i, i)
             else:
                 temp = '<a class="page" href="%s?p=%s">%s</a>' % (base_url,i,i)
             page_list.append(temp)

         if self.current_page == self.total_count:
             next = '<a class="page" href="javascript:void(0)">下一页</a>'
         else:
             next = '<a class="page" href="%s?p=%s">下一页</a>' % (base_url,self.current_page + 1)
             tail = '<a class="page" href="%s?p=%s">尾页</a>' % (base_url, self.total_count)
             page_list.append(tail)
         page_list.append(next)

         jump = """
            <input type='text'/><a onclick='jumpTo(this,"%s?p=");'>GO</a>
            <script>
                function jumpTo(ths,base) {
                    var val = ths.previousSibling.value;
                    if(val){
                         location.href = base + val;
                         }
                }
            </script>
            """%base_url

         page_list.append(jump)
         page_str = "".join(page_list)
         return page_str

应用：

def user_list(request):
    current_page = request.GET.get('p', 1)
    current_page = int(current_page)
    page_obj = Page(current_page,len(LIST))
    data =LIST[page_obj.start:page_obj.end]
    page_str = page_obj.page_str('/user_list/')
    return render(request,'user_list.html',{'li':data,'page_str':page_str})