s4 自定义分页

utils\pager.py

class PageInfo(object):
    def __init__(self,current_page,all_count,per_page,base_url,show_page=11):
        """

        :param current_page:
        :param all_count: 数据库总行数
        :param per_page: 每页显示行数
        :return:
        """
        try:
            self.current_page=int(current_page)
        except Exception as e:
            self.current_page=1
        self.per_page=per_page

        a,b=divmod(all_count,per_page)
        if b:
            a=a+1
        self.all_pager=a
        self.show_page=show_page
        self.base_url=base_url

    def start(self):
        return (self.current_page-1)*self.per_page

    def end(self):
        return self.current_page*self.per_page

    def pager(self):
        # v="<a href='/custom.html?page=1'>1</a>"
        # return v
        page_list =[]

        half =int((self.show_page-1)/2)
        #如果数据总页数<11
        if self.all_pager < self.show_page:
            begin=1
            stop=self.all_pager+1
        #如果数据总页数>11
        else:
            # 如果当前页 《=5 永远显示1,11
            if self.current_page<=half:
                begin=1
                stop=self.show_page+1
            else:
                if self.current_page+half >self.all_pager:
                    begin=self.all_pager -self.show_page +1
                    stop =self.all_pager+1
                else:
                    begin=self.current_page -half
                    stop =self.current_page +half+1


        if self.current_page<= 1:
            prev="<a style='display:inline-block;padding:5px;margin:5px' href='#'>上一页</a>"
        else:
            prev="<a style='display:inline-block;padding:5px;margin:5px' href='%s?page=%s'>上一页</a>"  % (self.base_url,self.current_page-1)
        page_list.append(prev)

        for i in range(begin,stop):
            if i==self.current_page:
                temp = "<a style='display:inline-block;padding:5px;background-color:lightgrey;margin:5px' href='%s?page=%s'>%s</a>" %(self.base_url,i,i,)
            else:
                temp = "<a style='display:inline-block;padding:5px;margin:5px' href='%s?page=%s'>%s</a>" %(self.base_url,i,i,)

            page_list.append(temp)

        if self.current_page>=self.all_pager:
            nex="<a style='display:inline-block;padding:5px;margin:5px' href='#'>下一页</a>"
        else:
            nex="<a style='display:inline-block;padding:5px;margin:5px' href='%s?page=%s'>下一页</a>"  % (self.base_url,self.current_page+1)
        page_list.append(nex)


        return ''.join(page_list)

def custom(request):
    # 用户当前需要访问页码
    all_count=models.UserInfo.objects.all().count()
    page_info=PageInfo(request.GET.get('page'),all_count,10,'/custom.html',11)
    user_list = models.UserInfo.objects.all()[page_info.start():page_info.end()]


    return render(request,'custom.html',{'user_list':user_list,'page_info':page_info})
    
    
    
    #html：
    
    #{{ page_info.pager| safe }}