jQuery EasyUI 数据网格 - 创建子网格 | jQuery EasyUI 教程

使用数据网格（datagrid）的详细视图，用户可以展开一行来显示附加的详细信息。任何内容都可以加载作为行详细，子网格也可以动态加载。本教程将向您展示如何在主网格上创建一个子网格。

步骤 1：创建主网格

<table id="dg" style="width:700px;height:250px"
        url="datagrid22_getdata.php" 
        title="DataGrid - SubGrid"
        singleSelect="true" fitColumns="true">
    <thead>
        <tr>
            <th field="itemid" width="80">Item ID</th>
            <th field="productid" width="100">Product ID</th>
            <th field="listprice" align="right" width="80">List Price</th>
            <th field="unitcost" align="right" width="80">Unit Cost</th>
            <th field="attr1" width="220">Attribute</th>
            <th field="status" width="60" align="center">Status</th>
        </tr>
    </thead>
</table>

步骤 2：设置详细视图来显示子网格

为了使用详细视图，请记得在页面头部引用视图脚本文件。

<script type="text/javascript" src="http://www.codercto.cc/try/jeasyui/datagrid-detailview.js"></script>

$('#dg').datagrid({
    view: detailview,
    detailFormatter:function(index,row){
        return '<div style="padding:2px"><table class="ddv"></table></div>';
    },
    onExpandRow: function(index,row){
        var ddv = $(this).datagrid('getRowDetail',index).find('table.ddv');
        ddv.datagrid({
            url:'datagrid22_getdetail.php?itemid='+row.itemid,
            fitColumns:true,
            singleSelect:true,
            rownumbers:true,
            loadMsg:'',
            height:'auto',
            columns:[[
                {field:'orderid',title:'Order ID',width:100},
                {field:'quantity',title:'Quantity',width:100},
                {field:'unitprice',title:'Unit Price',width:100}
            ]],
            onResize:function(){
                $('#dg').datagrid('fixDetailRowHeight',index);
            },
            onLoadSuccess:function(){
                setTimeout(function(){
                    $('#dg').datagrid('fixDetailRowHeight',index);
                },0);
            }
        });
        $('#dg').datagrid('fixDetailRowHeight',index);
    }
});

当用户点击展开按钮（'+'）时，'onExpandRow' 事件将被触发。我们创建一个新的带有三列的子网格。当子网格数据加载成功时或者改变尺寸大小时，请记得对主网格调用 'fixDetailRowHeight' 方法。

步骤 3：服务器端代码

datagrid22_getdata.php

$result = array();

include 'conn.php';

$rs = mysql_query("select * from item where itemid in (select itemid from lineitem)");

$items = array();
while($row = mysql_fetch_object($rs)){
    array_push($items, $row);
}

echo json_encode($items);

datagrid22_getdetail.php

include 'conn.php';

$itemid = mysql_real_escape_string($_REQUEST['itemid']);

$rs = mysql_query("select * from lineitem where itemid='$itemid'");
$items = array();
while($row = mysql_fetch_object($rs)){
    array_push($items, $row);
}
echo json_encode($items);