分页测试处理

文件1(导入文件2)

users=[{'name':'xxx{}'.format(i),'pwd':'aaa{}'.format(i)}for i in range(1,80)]

def user_list(request):
    page=Pagination(request,len(users))

    return render(request, 'user_list.html',
                  {'data': users[page.start:page.end],
                   'pagination': page.show_li
                   }
                  )

文件2

from django.utils.safestring import mark_safe
from django.http import QueryDict

class Pagination:
    def  __init__(self,request,all_count,query_params=QueryDict(),per_num=10, max_show=11):
        self.base_url=request.path_info
        self.query_params=query_params
        self.query_params._mutable=True
        try:
            self.current_page=int(request.GET.get('page',1))

            if self.current_page<=0:
                self.current_page=1
        except Exception as e:
            self.current_page=1
        self.max_show=max_show
        half_show=max_show//2
        self.per_num=per_num
        self.all_count=all_count
        self.total_num,more=divmod(all_count,per_num)

        if more:
            self.total_num +=1
        if self.total_num<max_show:
            self.page_start=1
            self.page_end=self.total_num

        else:
            if self.current_page<=half_show:
                self.page_start=1
                self.page_end=max_show

            elif self.current_page +half_show >=self.total_num:
                self.page_end = self.total_num
                self.page_start=self.total_num -max_show +1
            else:
                self.page_start=self.current_page - half_show
                self.page_end=self.current_page +half_show

    @property
    def start(self):
        return (self.current_page - 1) * self.per_num
    @property
    def end(self):
        return self.current_page * self.per_num
    @property
    def show_li(self):
        html_list = []
        self.query_params['page']=1
        first_li = '<li><a href="{}?{}">首页</a></li>'.format(self.base_url,self.query_params.urlencode())
        html_list.append(first_li)

        if self.current_page == 1:
            prev_li = '<li class="disabled"><a><<</a></li>'

        else:
            self.query_params['page']=self.current_page - 1
            prev_li = '<li><a href="{0}?{1}"><<</a></li>'.format(self.base_url,self.query_params.urlencode())
        html_list.append(prev_li)


        for num in range(self.page_start, self.page_end + 1):

            self.query_params['page'] =num
            if self.current_page == num:
                li_html = '<li class="active"><a href="{0}?{1}">{2}</a></li>'.format(self.base_url,self.query_params.urlencode(),num)

            else:
                li_html = '<li ><a href="{0}?{1}">{2}</a></li>'.format(self.base_url,self.query_params.urlencode(),num)
            html_list.append(li_html)


        if self.current_page == self.total_num:
            next_li = '<li class="disabled"><a>>></a></li>'

        else:
            self.query_params['page'] =self.current_page + 1
            next_li = '<li><a href="{0}?{1}">>></a></li>'.format(self.base_url,self.query_params.urlencode())
        html_list.append(next_li)
        self.query_params['page'] = self.total_num

        last_li = '<li><a href="{}?{}">尾页</a></li>'.format(self.base_url,self.query_params.urlencode())
        html_list.append(last_li)
        return mark_safe(''.join(html_list))