分页

class Page:
    def __init__(self, curPage, all, perPage, showPage):
        '''

        :param curPage: 当前页
        :param all: #数据条数
        :param perPage: #每页数据个数
        :param showPage: #展示多少页码
        '''
        a, b = divmod(all, perPage)  # 求余，第一个是商，第二个是余数
        if b != 0:
            a = a + 1
        self.allPage = a
        self.showPage = showPage
        self.perPage = perPage
        try:
            self.curPage = int(curPage)
            if self.curPage > self.allPage:
                self.curPage = self.allPage
        except Exception:
            self.curPage = 1

    def start(self):
        return (self.curPage - 1) * self.perPage

    def end(self):
        return self.curPage * self.perPage

    def pager(self):
        half = int(self.showPage / 2)

        # 小于showPage，全部显示
        if self.allPage < self.showPage:
            begin = 1
            end = self.allPage + 1
        else:  # 大于showPage
            begin = self.curPage - half
            end = self.curPage + half + 1
            # 考虑极值情况
            if self.curPage - half <= 0 or self.curPage + half > self.allPage:
                if self.curPage - half <= 0:
                    begin = 1
                    end = self.showPage + 1
                if self.curPage + half > self.allPage:
                    begin = self.allPage - self.showPage
                    end = self.allPage + 1

        pagelist = []
        if self.curPage > 1:
        #包含了一些bootstrap样式内容
            pagelist.append(
                '<li class="page-item"><a class="page-link" href="./?page=%s ">上一页</a></li>' % (self.curPage - 1,))
        else:
            pagelist.append('<li class="page-item"><a class="page-link">无上一页了</a></li>')
        for i in range(begin, end):
            temp = '<li class="page-item"><a class="page-link" href="./?page=%s">%s</a></li>' % (i, i)
            if i == self.curPage:
                temp = '<li class="page-item active"><a class="page-link">%s</a></li>' % (i,)
            pagelist.append(temp)
        if self.curPage < self.allPage:
            pagelist.append(
                '<li class="page-item"><a class="page-link" href="./?page=%s">下一页</a></li>' % (self.curPage + 1))
        else:
            pagelist.append('<li class="page-item"><a class="page-link">无下一页了</a></li>')
        return ''.join(pagelist)

def custom(req):
    curPage = req.GET.get('page')
    perPage = 8  # 每页8个
    userlist = models.userInfo.objects.all()  # filter(id__lt=30)
    page = Page(curPage, len(userlist), perPage, 10)
    return render(req, './App2/custom.html', {'userlist': userlist[page.start():page.end()], 'page': page})

加 |Safe 为了避开django的xss防御机制