Extjs之RowNumberer

Ext.grid.RowNumberer,Ext.grid.PageRowNumberer

在一个数据表格中,一般都会加一个行号,在ExtJs中,要实现行号这一效果,只需要一句代码:

 new Ext.grid.RowNumberer()

举个例子,代码如下:

var colModel = new Ext.grid.ColumnModel
                (
                    [
                         new Ext.grid.RowNumberer(),
                         { header: "擦写机器号", width: 100, dataIndex: ‘JSON_no_machine‘ },
                         { header: "写入服务器时间", width: 150, dataIndex: ‘JSON_time_insert‘ },
                         { header: "现居住地址", width: 250, dataIndex: ‘JSON_xjzdz‘ },
                         { header: "服务处所", width: 100, dataIndex: ‘JSON_fwcs‘ },
                         { header: "擦写日期", width: 150, dataIndex: ‘JSON_cxrq‘ },
                         { header: "擦写单位", width: 150, dataIndex: ‘JSON_cxdwmc‘ },
                         { header: "姓名", width: 50, dataIndex: ‘JSON_xm‘ },
                         { header: "身份证号码", width: 150, dataIndex: ‘JSON_sfzhm‘ },
                         { header: "擦写时间", width: 150, dataIndex: ‘JSON_make_time‘ },
                    ]
                );

但有些时候,我们需要的效果是实际的行号,是翻页之后,行号不会重置为1,而是从在上一页的最后一条记录的行号的基础上继续递增.这个时候,我们需要对Ext.grid.RowNumberer

进行一下扩展:

Ext.grid.PageRowNumberer = Ext.extend(Ext.grid.RowNumberer, {
    width : 40,
    renderer:function(value, cellmeta, record, rowIndex, columnIndex, store){
        if(store.lastOptions.params!=null){
            var pageindex=store.lastOptions.params.start;
            return pageindex + rowIndex + 1;
        } else {
            return rowIndex + 1;
        }
    }
}); 

rowIndex是本页表格的行号,从0开始,pageindex取至每页的Start参数,也是从0开始,那么根据"从在上一页的最后一条记录的行号的基础上继续递增",当前记录的行号就为:

pageindex + rowIndex + 1;  

举个例子,代码如下:

                //实际行号
                Ext.grid.PageRowNumberer = Ext.extend(Ext.grid.RowNumberer, {
                    width: 40,
                    renderer: function (value, cellmeta, record, rowIndex, columnIndex, store) {
                        if (store.lastOptions.params != null) {
                            var pageindex = store.lastOptions.params.start;
                            return pageindex + rowIndex + 1;
                        } else {
                            return rowIndex + 1;
                        }
                    }
                });
                var colModel = new Ext.grid.ColumnModel
                (
                    [
                        // new Ext.grid.RowNumberer(),
                         new Ext.grid.PageRowNumberer(),
                         { header: "擦写机器号", width: 100, dataIndex: ‘JSON_no_machine‘ },
                         { header: "写入服务器时间", width: 150, dataIndex: ‘JSON_time_insert‘ },
                         { header: "现居住地址", width: 250, dataIndex: ‘JSON_xjzdz‘ },
                         { header: "服务处所", width: 100, dataIndex: ‘JSON_fwcs‘ },
                         { header: "擦写日期", width: 150, dataIndex: ‘JSON_cxrq‘ },
                         { header: "擦写单位", width: 150, dataIndex: ‘JSON_cxdwmc‘ },
                         { header: "姓名", width: 50, dataIndex: ‘JSON_xm‘ },
                         { header: "身份证号码", width: 150, dataIndex: ‘JSON_sfzhm‘ },
                         { header: "擦写时间", width: 150, dataIndex: ‘JSON_make_time‘ },
                    ]
                );

NED