在写django项目的时候,有的数据没有使用模型管理(数据表是动态添加的),所以要直接使用mysql。前端请求数据的时候可能会指定这几个参数:要请求的页号,页大小,以及检索条件。
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""" tableName: 表名 pageNum: 请求的页的编号 pageSize: 每一页的大小 searchInfo: 需要全局查询的信息 """ def getMysqlData(tableName, pageNum, pageSize, searchInfo): # 使用MySQLdb获取的mysql游标 cursor = getCursor() # 用以获取列标题 colSql = 'select * from {} limit 1' . format (tableName) cursor.execute(colSql) columns = [col[ 0 ] for col in cursor.description] # 转化查询信息为sql searchCondition = ',' .join(columns) searchInfo = "WHERE CONCAT({}) like '%{}%'" . format (searchCondition, searchInfo) # 用以获取总数 totalSql = "select count(*) from {} {};" . format (tableName, searchInfo) cursor.execute(totalSql) total = cursor.fetchone()[ 0 ] # 用以获取具体数据 limit1 = (pageNum - 1 ) * pageSize limit2 = pageSize dataSql = "select * from {} {} limit {},{};" . format (tableName, searchInfo, limit1, limit2) cursor.execute(dataSql) data = [ dict ( zip (columns, row)) for row in cursor.fetchall() ] return (total, columns, data) """ total: 符合条件的数据总数 columns: 字段名列表 ['字段名1', '字段名2', ...] data: 数据对象列表 [{'字段名1': 数据1,'字段名2':数据1, ...},{'字段名1': 数据2, '字段名2': 数据2, ...}, ...] """ |
补充知识:django 分页查询搜索--传递查询参数,翻页时带上查询参数
django在分页查询的时候,翻页时,v层要传递查询参数,相应的html翻页连接也要带上查询参数
直接上代码
view:
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@login_required def search_name(request): username = request.session.get( 'user' ) search_name = request.GET.get( 'name' ) if search_name = = None : search_name = request.GET.get( 'name' ) event_list = Event.objects. filter (name__contains = search_name) paginator = Paginator(event_list, 2 ) page = request.GET.get( 'page' ) try : contacts = paginator.page(page) except PageNotAnInteger: # 如果page不是整数,取第一页面数据 contacts = paginator.page( 1 ) except EmptyPage: # 如果page不在范围内,则返回最后一页数据 contacts = paginator.page(paginator.num_pages) return render(request, 'event_manage.html' ,{ 'user' :username, 'events' :contacts, 'name' :search_name}) |
html:
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<!--列表分页器--> < div class = "pagination" > < span class = "step-links" > {% if events.has_previous %} < a href = "?page={{ events.previous_page_number }}&&name={{ name }}" rel = "external nofollow" >previous</ a > {% endif %} < span class = "current" > Page {{ events.number }} of {{ events.paginator.num_pages }} </ span > {% if events.has_next %} < a href = "?page={{ events.next_page_number }}&name={{ name }}" rel = "external nofollow" >next</ a > {% endif %} </ span > </ div > {% include 'include/pager.html' %} |
以上这篇利用python对mysql表做全局模糊搜索并分页实例就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/Monster_ixx/article/details/105056756