""" 分頁組件使用示例：obj = Pagination(request.GET.get('page',1),len(USER_LIST),request.path_info)page_user_list = USER_LIST[obj.start:obj.end]page_html = obj.page_html()return render(request,'index.html',{'users':page_user_list,'page_html':page_html})"""class Pagination(object):def __init__(self,current_page,all_count,base_url,per_page_num=2,pager_count=11):"""封裝分頁相關數據:param current_page: 當前頁:param all_count: 數據庫中的數據總條數:param per_page_num: 每頁顯示的數據條數:param base_url: 分頁中顯示的URL前綴:param pager_count: 最多顯示的頁碼個數"""try:current_page = int(current_page)except Exception as e:current_page = 1if current_page <1:current_page = 1self.current_page = current_pageself.all_count = all_countself.per_page_num = per_page_numself.base_url = base_url# 總頁碼all_pager, tmp = divmod(all_count, per_page_num)if tmp:all_pager += 1self.all_pager = all_pagerself.pager_count = pager_countself.pager_count_half = int((pager_count - 1) / 2)@propertydef start(self):return (self.current_page - 1) * self.per_page_num@propertydef end(self):return self.current_page * self.per_page_numdef page_html(self):# 如果總頁碼 < 11個：if self.all_pager <= self.pager_count:pager_start = 1pager_end = self.all_pager + 1# 總頁碼 > 11else:# 當前頁如果<=頁面上最多顯示11/2個頁碼if self.current_page <= self.pager_count_half:pager_start = 1pager_end = self.pager_count + 1# 當前頁大于5else:# 頁碼翻到最后if (self.current_page + self.pager_count_half) > self.all_pager:pager_end = self.all_pager + 1pager_start = self.all_pager - self.pager_count + 1else:pager_start = self.current_page - self.pager_count_halfpager_end = self.current_page + self.pager_count_half + 1page_html_list = []first_page = '<li><a href="%s?page=%s">首頁</a></li>' % (self.base_url,1,)page_html_list.append(first_page)if self.current_page <= 1:prev_page = '<li class="disabled"><a href="#">上一頁</a></li>'else:prev_page = '<li><a href="%s?page=%s">上一頁</a></li>' % (self.base_url,self.current_page - 1,)page_html_list.append(prev_page)for i in range(pager_start, pager_end):if i == self.current_page:temp = '<li class="active"><a href="%s?page=%s">%s</a></li>' % (self.base_url,i, i,)else:temp = '<li><a href="%s?page=%s">%s</a></li>' % (self.base_url,i, i,)page_html_list.append(temp)if self.current_page >= self.all_pager:next_page = '<li class="disabled"><a href="#">下一頁</a></li>'else:next_page = '<li><a href="%s?page=%s">下一頁</a></li>' % (self.base_url,self.current_page + 1,)page_html_list.append(next_page)last_page = '<li><a href="%s?page=%s">尾頁</a></li>' % (self.base_url,self.all_pager,)page_html_list.append(last_page)return ''.join(page_html_list)

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轉載于:https://www.cnblogs.com/wangdamao/p/11568905.html

總結

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