jEasyUI creates subgrid

Using the detailed view of the datagrid, the user can expand a row to display additional detailed information. Any content can be loaded as row details, subgrids can also be loaded dynamically. This tutorial will show you how to create a subgrid on top of the main grid.

Step 1: Create the main grid

<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>

Step 2: Set up the detail view to display the subgrid

In order to use the detail view, please remember to add View script files are referenced internally.

<script type="text/javascript" src="http://www.w3cschool.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);
	}
});

When the user clicks the expand button ('+'), the 'onExpandRow' event will be triggered. We create a new subgrid with three columns. Remember to call the 'fixDetailRowHeight' method on the main grid when the subgrid data is loaded successfully or when the size is changed.

Step 3: Server-side code

$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);

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);

Download jQuery EasyUI instance

jeasyui- datagrid-datagrid22.zip