Extending the RowExpander Plugin

[wm003]

Great plugin, thanks for sharing!

[NoahK17]

If you are finding this Plugin does not play well with Animal's ExportGridToExcel plugin, please see this thread on my update to his plugin to work properly with this plugin. http://extjs.com/forum/showthread.php?t=32400&page=4

For anyone else who might be confused on how to get this plugin to work properly, follow these directions.

Create a new file and name it GridRowExpander.js, put the following code inside and save it.

/*
 * Ext JS Library 2.0
 * Copyright(c) 2006-2007, Ext JS, LLC.
 * licensing@extjs.com
 *
 * http://extjs.com/license
 *
 * MODIFIED: SGB [12.12.07]
 * Added support for a new config option, remoteDataMethod,
 * including getter and setter functions, and minor mods
 * to the beforeExpand and expandRow functions
 */

Ext.grid.RowExpander = function(config){
    Ext.apply(this, config);
    Ext.grid.RowExpander.superclass.constructor.call(this);

    if(this.tpl){
        if(typeof this.tpl == 'string'){
            this.tpl = new Ext.Template(this.tpl);
        }
        this.tpl.compile();
    }

    this.state = {};
    this.bodyContent = {};

    this.addEvents({
        beforeexpand : true,
        expand: true,
        beforecollapse: true,
        collapse: true
    });
};

Ext.extend(Ext.grid.RowExpander, Ext.util.Observable, {
    header: "",
    width: 20,
    sortable: false,
    fixed:true,
    dataIndex: '',
    id: 'expander',
    lazyRender : true,
    enableCaching: true,

    getRowClass : function(record, rowIndex, p, ds){
        p.cols = p.cols-1;
        var content = this.bodyContent[record.id];
        if(!content && !this.lazyRender){
            content = this.getBodyContent(record, rowIndex);
        }
        if(content){
            p.body = content;
        }
        return this.state[record.id] ? 'x-grid3-row-expanded' : 'x-grid3-row-collapsed';
    },

    init : function(grid){
        this.grid = grid;

        var view = grid.getView();
        view.getRowClass = this.getRowClass.createDelegate(this);

        view.enableRowBody = true;

        grid.on('render', function(){
            view.mainBody.on('mousedown', this.onMouseDown, this);
        }, this);
    },

    getBodyContent : function(record, index){
        if(!this.enableCaching){
            return this.tpl.apply(record.data);
        }
        var content = this.bodyContent[record.id];
        if(!content){
            content = this.tpl.apply(record.data);
            this.bodyContent[record.id] = content;
        }
        return content;
    },
	// Setter and Getter methods for the remoteDataMethod property
	setRemoteDataMethod : function (fn){
		this.remoteDataMethod = fn;
	},

	getRemoteDataMethod : function (record, index){
		if(!this.remoteDataMethod){
			return;
		}
			return this.remoteDataMethod.call(this,record,index);
	},

    onMouseDown : function(e, t){
        if(t.className == 'x-grid3-row-expander'){
            e.stopEvent();
            var row = e.getTarget('.x-grid3-row');
            this.toggleRow(row);
        }
    },

    renderer : function(v, p, record){
        p.cellAttr = 'rowspan="2"';
        return '<div class="x-grid3-row-expander"> </div>';
    },

    beforeExpand : function(record, body, rowIndex){
        if(this.fireEvent('beforexpand', this, record, body, rowIndex) !== false){
            // If remoteDataMethod is defined then we'll need a div, with a unique ID,
            //  to place the content
			if(this.remoteDataMethod){
				this.tpl = new Ext.Template("<div id='remData" + rowIndex + "' class='rem-data-expand'><\div>");
			}
			if(this.tpl && this.lazyRender){
                body.innerHTML = this.getBodyContent(record, rowIndex);
            }

            return true;
        }else{
            return false;
        }
    },

	toggleRow : function(row){
        if(typeof row == 'number'){
            row = this.grid.view.getRow(row);
        }
        this[Ext.fly(row).hasClass('x-grid3-row-collapsed') ? 'expandRow' : 'collapseRow'](row);
    },

    expandRow : function(row){
        if(typeof row == 'number'){
            row = this.grid.view.getRow(row);
        }
        var record = this.grid.store.getAt(row.rowIndex);
        var body = Ext.DomQuery.selectNode('tr:nth(2) div.x-grid3-row-body', row);
        if(this.beforeExpand(record, body, row.rowIndex)){
            this.state[record.id] = true;
            Ext.fly(row).replaceClass('x-grid3-row-collapsed', 'x-grid3-row-expanded');
           	if(this.fireEvent('expand', this, record, body, row.rowIndex) !== false){
				//  If the expand event is successful then get the remoteDataMethod
				this.getRemoteDataMethod(record,row.rowIndex);
			}
        }
    },

    collapseRow : function(row){
        if(typeof row == 'number'){
            row = this.grid.view.getRow(row);
        }
        var record = this.grid.store.getAt(row.rowIndex);
        var body = Ext.fly(row).child('tr:nth(1) div.x-grid3-row-body', true);
        if(this.fireEvent('beforcollapse', this, record, body, row.rowIndex) !== false){
            this.state[record.id] = false;
            Ext.fly(row).replaceClass('x-grid3-row-expanded', 'x-grid3-row-collapsed');
            this.fireEvent('collapse', this, record, body, row.rowIndex);
        }
    }
});

Make sure you call your .js file from your index page, something that looks like:

<script type="text/javascript" src="libs/js/ext/ux/GridRowExpander.js"></script>

Now, in your GridPanel config options, add the following lines:

Under your columns config add:

expander,

It might looks like:

				columns: [
					expander,
					{header: 'Company', width: 160, sortable: true, dataIndex: 'company'},
					{header: 'Price', width: 75, sortable: true, dataIndex: 'price'},
					{header: 'Change', width: 75, sortable: true, renderer: change, dataIndex: 'change'},
					{header: '% Change', width: 75, sortable: true, renderer: pctChange, dataIndex: 'pctChange'},
					{header: 'Last Updated', width: 100, sortable: true,
						renderer: Ext.util.Format.dateRenderer('m/d/Y'),
			                        dataIndex: 'lastChange'}
				],

And then add this to the GridPanel config options:

plugins: expander,

Create the expander variable like this (it can be anywhere in your code, as long as the GridPanel has scope:

		// Plugin for gridRowExpander which calls data from an external source
			var expander = new Ext.grid.RowExpander({
		    	remoteDataMethod : expandGrid
			});

Finally, add your new function, expandGrid anywhere in your code:

	// Remotely populates grid using data
		function expandGrid(record,index){
			Ext.get('remData'+index).load({
	            url: "your_external_file.html",
            	scripts: true,
            	params: ""
        	});
		};

And that should do it! Thanks to the OP for the original plugin code. Cheers!

[_Sergio_]

(dont forget to reset the state's with the for loop I posted more top)

Regards,

Iveco

This behaviour should be implemented in the RowExpander itself.
At the end of init method in RowExpander add

init : function(grid){
//original code....
grid.getStore().on("load", function(store, records, options){
	Ext.select('div.x-grid3-row-expanded').replaceClass('x-grid3-row-expanded', 'x-grid3-row-collapsed');
	this.state, this.bodyContent = {};
}, this);

[s.kerroumi]

Hello,

im working with the RowExpander and i m trying to find how to nest two grid inside a master grid like this :

master grid
------------>slave grid
----------------> slave "slave" grid

for the moment i have the following result (grid without headers except the last one)

example.jpg


but the deepest grid has a strange behavior : it does'nt collapse correctly

here is my code :

var dayGrid = function(gridID, title, data){    
    
    var xg = Ext.grid;

    // shared reader
    var reader = new Ext.data.ArrayReader({}, [
       {name: 'id'},
       {name: 'day'},
       {name: 'quantitytheo', type: 'float'},
       {name: 'quantitysettled', type: 'float'}
       ]);

////////////////////////////////////////////////////////////////////////////////////////
// DAY GRID
////////////////////////////////////////////////////////////////////////////////////////

// row expander
   // Issue template
    
    // row expander
   var expander = new Ext.grid.RowExpander({
		    	remoteDataMethod : borrowlendGrid
			});
    
   var masterGrid = new xg.GridPanel({
        ds: new Ext.data.Store({
            reader: reader,
            data: xg.dummyData
        }),
        cm: new xg.ColumnModel([
            expander,
            {header: "Day", width: 200, sortable: true, dataIndex: 'day'},
            {header: "Theoretical Quantity", width: 200, sortable: true, dataIndex: 'quantitytheo'},
            {header: "Settled Quantity", width: 200, sortable: true, dataIndex: 'quantitysettled'}
        ]),
        viewConfig: {
            forceFit:true
        },
        autoHeight: true,
        hideHeaders: true,
        width: 800,
        height: 800,
        plugins: expander,
        collapsible: true,
        animCollapse: false,
        disableSelection : true,
        trackMouseOver : false,
        enableHdMenu : false,
        renderTo: document.getElementById('testGrid')
        
    });
    
}

////////////////////////////////////////////////////////////////////////////////////////
// BORROW LEND GRID
////////////////////////////////////////////////////////////////////////////////////////
var borrowlendGrid = function(record, index) {
    
   var xg = Ext.grid;
    
    var blreader = new Ext.data.ArrayReader({}, [
       {name: 'id'},
       {name: 'type'},
       {name: 'theoQty'},
       {name: 'theoQtyValue', type: 'float'},
       {name: 'settledQty'},
       {name: 'settledQtyValue', type: 'float'}
       ]);
        
    var blstore = new Ext.data.Store({
        reader: blreader,
        data: xg.dummyData2
    });
    
    var iexpander = new Ext.grid.RowExpander({
		    	remoteDataMethod : detailedMovementGrid,
		    	tpl: new Ext.Template(
            		'<div id="subRemData"></div>')
			});
  
    var blgrid = new xg.GridPanel({
        ds: blstore,
        cm: new xg.ColumnModel([
            iexpander,
            {header: "Type", width: 200, sortable: true, dataIndex: 'type'},
            {header: "Theoretical", width: 80, sortable: true, dataIndex: 'theoQty'},
            {header: "Theoretical Quantity", width: 80, sortable: true, dataIndex: 'theoQtyValue'},
            {header: "Settled", width: 80, sortable: true, dataIndex: 'settledQty'},
            {header: "Settled Quantity", width: 80, sortable: true, dataIndex: 'settledQtyValue'}
        ]),
		
        viewConfig: {
                forceFit:true
        },
        disableSelection : false,
        hideHeaders: true,
        autoHeight: true,
        plugins: iexpander,
        collapsible: false,
        disableSelection : true,
        enableHdMenu : false,
        trackMouseOver : false,
        autoSizeColumns: true
    });
    
 	blgrid.render(Ext.get('remData'+record.data.id));
  	
};


////////////////////////////////////////////////////////////////////////////////////////
// DETAILLED MOVEMENTS GRID
////////////////////////////////////////////////////////////////////////////////////////

var detailedMovementGrid = function(record, index) {
    var id = record.get("code");
    var xg = Ext.grid;
    var detailedreader = new Ext.data.ArrayReader({}, [
    	{name: 'id'},
       {name:'code'},
       {name: 'name'},
       {name: 'tradeRef'},
       {name: 'S'},
       {name: 'T'},
       {name: 'qty'},
       {name: 'start'},
       {name: 'end'},
       {name: 'loanCcy'},
       {name: 'loanValue'},
       {name: 'rate'},
       {name: 'divReq'}
       
    ]);
        
    var detailedstore = new Ext.data.Store({
        reader: detailedreader,
        data: xg.dummyData3
    });
        
  
    
    var detailedgrid = new xg.GridPanel({
        ds: detailedstore,
        cm: new xg.ColumnModel([
            {header: 'Client Code', width: 50, sortable: true, dataIndex: 'code'},
            {header: 'Client Name', width: 120, sortable: true, dataIndex: 'name'},
            {header: 'Trade Ref', width: 50, sortable: true, dataIndex: 'tradeRef'},
            {header: 'S', width: 20, sortable: true, dataIndex: 'S'},
            {header: 'T', width: 20, sortable: true, dataIndex: 'T'},
            {header: 'Quantity', width: 60, sortable: true, dataIndex: 'qty'},
            {header: 'Start Date', width: 60, sortable: true, dataIndex: 'start'},
            {header: 'End Date', width: 60, sortable: true, dataIndex: 'end'},
            {header: 'Loan Ccy', width: 60, sortable: true, dataIndex: 'loanCcy'},
            {header: 'Loan Value', width: 60, sortable: true, dataIndex: 'loanValue'},
            {header: 'rate', width: 60, sortable: true, dataIndex: 'rate'},
            {header: 'Div Req', width: 60, sortable: true, dataIndex: 'divReq'},
        ]),

       viewConfig: {
                forceFit:true
        },
        
        autoHeight: true,
        collapsible: false,
        disableSelection : true,
        trackMouseOver : false,
        autoSizeColumns: true
    });
    
    detailedgrid.render(Ext.get('remData'+record.data.id));
    
};


/*** functions ***/


function issueLoad() {
    Ext.QuickTips.init();
    Ext.BLANK_IMAGE_URL = '/static/images/transparentpixel.gif';
    new dayGrid("mastergrid", "Host Issues", Ext.grid.dummydata);
}

Ext.onReady(issueLoad);

[s.kerroumi]

Hello,

im working with the RowExpander and i m trying to find how to nest two grid inside a master grid like this :

master grid
------------>slave grid
----------------> slave "slave" grid

for the moment i have the following result (grid without headers except the last one)

Attachment 6625


but the deepest grid has a strange behavior : it does'nt collapse correctly

here is my code :

var dayGrid = function(gridID, title, data){    
    
    var xg = Ext.grid;

    // shared reader
    var reader = new Ext.data.ArrayReader({}, [
       {name: 'id'},
       {name: 'day'},
       {name: 'quantitytheo', type: 'float'},
       {name: 'quantitysettled', type: 'float'}
       ]);

////////////////////////////////////////////////////////////////////////////////////////
// DAY GRID
////////////////////////////////////////////////////////////////////////////////////////

// row expander
   // Issue template
    
    // row expander
   var expander = new Ext.grid.RowExpander({
		    	remoteDataMethod : borrowlendGrid
			});
    
   var masterGrid = new xg.GridPanel({
        ds: new Ext.data.Store({
            reader: reader,
            data: xg.dummyData
        }),
        cm: new xg.ColumnModel([
            expander,
            {header: "Day", width: 200, sortable: true, dataIndex: 'day'},
            {header: "Theoretical Quantity", width: 200, sortable: true, dataIndex: 'quantitytheo'},
            {header: "Settled Quantity", width: 200, sortable: true, dataIndex: 'quantitysettled'}
        ]),
        viewConfig: {
            forceFit:true
        },
        autoHeight: true,
        hideHeaders: true,
        width: 800,
        height: 800,
        plugins: expander,
        collapsible: true,
        animCollapse: false,
        disableSelection : true,
        trackMouseOver : false,
        enableHdMenu : false,
        renderTo: document.getElementById('testGrid')
        
    });
    
}

////////////////////////////////////////////////////////////////////////////////////////
// BORROW LEND GRID
////////////////////////////////////////////////////////////////////////////////////////
var borrowlendGrid = function(record, index) {
    
   var xg = Ext.grid;
    
    var blreader = new Ext.data.ArrayReader({}, [
       {name: 'id'},
       {name: 'type'},
       {name: 'theoQty'},
       {name: 'theoQtyValue', type: 'float'},
       {name: 'settledQty'},
       {name: 'settledQtyValue', type: 'float'}
       ]);
        
    var blstore = new Ext.data.Store({
        reader: blreader,
        data: xg.dummyData2
    });
    
    var iexpander = new Ext.grid.RowExpander({
		    	remoteDataMethod : detailedMovementGrid,
		    	tpl: new Ext.Template(
            		'<div id="subRemData"></div>')
			});
  
    var blgrid = new xg.GridPanel({
        ds: blstore,
        cm: new xg.ColumnModel([
            iexpander,
            {header: "Type", width: 200, sortable: true, dataIndex: 'type'},
            {header: "Theoretical", width: 80, sortable: true, dataIndex: 'theoQty'},
            {header: "Theoretical Quantity", width: 80, sortable: true, dataIndex: 'theoQtyValue'},
            {header: "Settled", width: 80, sortable: true, dataIndex: 'settledQty'},
            {header: "Settled Quantity", width: 80, sortable: true, dataIndex: 'settledQtyValue'}
        ]),
		
        viewConfig: {
                forceFit:true
        },
        disableSelection : false,
        hideHeaders: true,
        autoHeight: true,
        plugins: iexpander,
        collapsible: false,
        disableSelection : true,
        enableHdMenu : false,
        trackMouseOver : false,
        autoSizeColumns: true
    });
    
 	blgrid.render(Ext.get('remData'+record.data.id));
  	
};


////////////////////////////////////////////////////////////////////////////////////////
// DETAILLED MOVEMENTS GRID
////////////////////////////////////////////////////////////////////////////////////////

var detailedMovementGrid = function(record, index) {
    var id = record.get("code");
    var xg = Ext.grid;
    var detailedreader = new Ext.data.ArrayReader({}, [
    	{name: 'id'},
       {name:'code'},
       {name: 'name'},
       {name: 'tradeRef'},
       {name: 'S'},
       {name: 'T'},
       {name: 'qty'},
       {name: 'start'},
       {name: 'end'},
       {name: 'loanCcy'},
       {name: 'loanValue'},
       {name: 'rate'},
       {name: 'divReq'}
       
    ]);
        
    var detailedstore = new Ext.data.Store({
        reader: detailedreader,
        data: xg.dummyData3
    });
        
  
    
    var detailedgrid = new xg.GridPanel({
        ds: detailedstore,
        cm: new xg.ColumnModel([
            {header: 'Client Code', width: 50, sortable: true, dataIndex: 'code'},
            {header: 'Client Name', width: 120, sortable: true, dataIndex: 'name'},
            {header: 'Trade Ref', width: 50, sortable: true, dataIndex: 'tradeRef'},
            {header: 'S', width: 20, sortable: true, dataIndex: 'S'},
            {header: 'T', width: 20, sortable: true, dataIndex: 'T'},
            {header: 'Quantity', width: 60, sortable: true, dataIndex: 'qty'},
            {header: 'Start Date', width: 60, sortable: true, dataIndex: 'start'},
            {header: 'End Date', width: 60, sortable: true, dataIndex: 'end'},
            {header: 'Loan Ccy', width: 60, sortable: true, dataIndex: 'loanCcy'},
            {header: 'Loan Value', width: 60, sortable: true, dataIndex: 'loanValue'},
            {header: 'rate', width: 60, sortable: true, dataIndex: 'rate'},
            {header: 'Div Req', width: 60, sortable: true, dataIndex: 'divReq'},
        ]),

       viewConfig: {
                forceFit:true
        },
        
        autoHeight: true,
        collapsible: false,
        disableSelection : true,
        trackMouseOver : false,
        autoSizeColumns: true
    });
    
    detailedgrid.render(Ext.get('remData'+record.data.id));
    
};


/*** functions ***/


function issueLoad() {
    Ext.QuickTips.init();
    Ext.BLANK_IMAGE_URL = '/static/images/transparentpixel.gif';
    new dayGrid("mastergrid", "Host Issues", Ext.grid.dummydata);
}

Ext.onReady(issueLoad);

no responses?


in fact in my nested grid the passage from "x-grid3-row x-grid3-row-expanded" to "x-grid3-row x-grid3-row-collapsed" has no effect...

can someone please tell me if somebody met that issue...

[amanbrar82]

2) When I have a row expanded and showing the rowExpander, meanwhile updating the grid's datastore (though refreshing the grid), it will show all rows collapsed, even if some of them before the update expanded - Iveco

I am using rowExpander plugin as given in ExtJs examples folder. It is working nicely, but on store reload, all rows become collapsed though some were in expanded state before refresh. how can I keep rows expanded. I saw the code given in above quoted post, but could not get it to work, Please help me!!! Here is simplified version of my code..

    var expander = new Ext.grid.RowExpander({
        tpl : new Ext.Template('This is a test grid<br>Testing')
    });

	var mystore = new Ext.data.Store({
			url: 'plantsdetail.xml',
			reader: new Ext.data.XmlReader({
				   record: 'plant'
			   }, [ 'id2','nature','useful' ])
	});

	mystore.load();
    
   var cm = new Ext.grid.ColumnModel([
            expander,
            {header: "Id", width: 80, sortable: true, dataIndex: 'id2', id:'Id'},
            {header: "Nature", width: 140, sortable: true, dataIndex: 'nature'},
            {header: "Useful", width: 140, sortable: true, dataIndex: 'useful'}
        ]);
        
    var mygrid = new Ext.grid.GridPanel({
        store: mystore,
        cm: cm,
        width: 400,
        height: 300,
        plugins: expander,
        title: 'Expander Rows',        
        renderTo: document.body
    });

	function store_reload(){
		mystore.reload()
	}

[ParanoidAndroid]

Got this fixed by using "rowdblclick".

Can you (or someone) show me an example of how to attach this? I'm trying:

// ... 
        listeners : {
            'rowdblclick': rowExpander.toggleRow,
            'mouseover':chooseActions
        }
... //

What I want to happen is to have the doubleclick call the rowExpander's toggleRow method. So far nothing I've tried seems to work. Thanks for any help.

[ParanoidAndroid]

Turns out I found the solution. I post it here for others who may have this problem.

listeners : {
'rowdblclick': function() { rowExpander.toggleRow(gridSelectionModel.grid.view.getRow(gridSelectionModel.last) )
},
'mouseover':chooseActions
}

... where gridSelectionModel is an Ext.grid.RowSelectionModel.

I really couldn't find anything about this in the docs. The "last" property isn't even mentioned in the properties (actually, there are no properties listed). Maybe my poor searching, but I had to analyze the objects and their properties to even come up with this solution.

Call me crazy, but I think the RowSelectionModel should have a method that returns the row or row index.

[ethraza]

This post has helped me a lot, so I coming back to give my contribution.

Added:
- Loading class
- store parameter
- render event

So now this rowExpander can load and apply another store into the tpl.

I have added to this rowExpander the possibility to pass a Data Store to it. The store will be loaded with the value for the id of the row record as param and the result will be applied to the tpl set. After all it will fire the render event passing this.store and record at the end.

RowExpander:

Ext.grid.RowExpander = function(config){
    Ext.apply(this, config);
    Ext.grid.RowExpander.superclass.constructor.call(this);

    if(this.tpl){
        if(typeof this.tpl == 'string'){
            this.tpl = new Ext.Template(this.tpl);
        }
        this.tpl.compile();
    }

    this.state = {};
    this.bodyContent = {};

    this.addEvents({
        beforeexpand : true,
        expand: true,
        beforecollapse: true,
        collapse: true,
        render: true
    });
};

Ext.extend(Ext.grid.RowExpander, Ext.util.Observable, {
    header: "",
    width: 20,
    sortable: false,
    fixed:true,
    dataIndex: '',
    id: 'expander',
    lazyRender : true,
    enableCaching: true,

    getRowClass : function(record, rowIndex, p, ds){
        p.cols = p.cols-1;
        var content = this.bodyContent[record.id];
        if(!content && !this.lazyRender){
            content = this.getBodyContent(record, rowIndex);
        }
        if(content){
            p.body = content;
        }
        return this.state[record.id] ? 'x-grid3-row-expanded' : 'x-grid3-row-collapsed';
    },

    init : function(grid){
        this.grid = grid;

        var view = grid.getView();
        view.getRowClass = this.getRowClass.createDelegate(this);

        view.enableRowBody = true;

        grid.on('render', function(){
            view.mainBody.on('mousedown', this.onMouseDown, this);
        }, this);
    },

    getBodyContent : function(record, index){
        if(!this.enableCaching){
            return this.tpl.apply(record.data);
        }
        var content = this.bodyContent[record.id];
        if(!content){
            content = this.tpl.apply(record.data);
            this.bodyContent[record.id] = content;
        }
        return content;
    },
    // Setter and Getter methods for the remoteDataMethod property
    setRemoteDataMethod : function (fn){
        this.remoteDataMethod = fn;
    },

    getRemoteDataMethod : function (record, index){
        if(!this.remoteDataMethod){
            return;
        }
            return this.remoteDataMethod.call(this,record,index);
    },

    onMouseDown : function(e, t){
        if(t.className == 'x-grid3-row-expander'){
            e.stopEvent();
            var row = e.getTarget('.x-grid3-row');
            this.toggleRow(row);
        }
    },

    renderer : function(v, p, record){
        p.cellAttr = 'rowspan="2"';
        return '<div class="x-grid3-row-expander"> </div>';
    },

    beforeExpand : function(record, body, rowIndex){
        if(this.fireEvent('beforexpand', this, record, body, rowIndex) !== false){
            // If remoteDataMethod is defined then we'll need a div, with a unique ID,
            //  to place the content
            // If store is defined it will load up passing id:record.id (grid store)
            //  in params, use the tpl defined to apply response record (rec)
            //  and fire the render event with won store and record
            if(this.remoteDataMethod){
                this.tpl = new Ext.Template("<div id='remData" + rowIndex + "' class='rem-data-expand'><\div>");
            }else if(this.store && this.tpl && this.lazyRender){
                if(body.innerHTML == '' || !this.enableCaching){
                    body.innerHTML = Ext.UpdateManager.defaults.indicatorText;
                    this.store.on('load', function(s,rec){
                        body.innerHTML = '';
                        Ext.each(rec,function(e){
                            body.innerHTML += this.getBodyContent(e, rowIndex);
                        },this);
                        
                        this.fireEvent('render', this, record, body, rowIndex, s, rec);
                    },this,{
                        scope: this,
                        single: true
                    });
                    this.store.load({params: {id: record.id}});
                }
                return true;
            }
            
            if(this.tpl && this.lazyRender){
                body.innerHTML = this.getBodyContent(record, rowIndex);
                this.fireEvent('render', this, record, body, rowIndex);
            }

            return true;
        }else{
            return false;
        }
    },

    toggleRow : function(row){
        if(typeof row == 'number'){
            row = this.grid.view.getRow(row);
        }
        this[Ext.fly(row).hasClass('x-grid3-row-collapsed') ? 'expandRow' : 'collapseRow'](row);
    },

    expandRow : function(row){
        if(typeof row == 'number'){
            row = this.grid.view.getRow(row);
        }
        var record = this.grid.store.getAt(row.rowIndex);
        var body = Ext.DomQuery.selectNode('tr:nth(2) div.x-grid3-row-body', row);
        if(this.beforeExpand(record, body, row.rowIndex)){
            this.state[record.id] = true;
            Ext.fly(row).replaceClass('x-grid3-row-collapsed', 'x-grid3-row-expanded');
               if(this.fireEvent('expand', this, record, body, row.rowIndex) !== false){
                // If the expand event is successful then get the remoteDataMethod
                this.getRemoteDataMethod(record,row.rowIndex);
            }
        }
    },

    collapseRow : function(row){
        if(typeof row == 'number'){
            row = this.grid.view.getRow(row);
        }
        var record = this.grid.store.getAt(row.rowIndex);
        var body = Ext.fly(row).child('tr:nth(1) div.x-grid3-row-body', true);
        if(this.fireEvent('beforcollapse', this, record, body, row.rowIndex) !== false){
            this.state[record.id] = false;
            Ext.fly(row).replaceClass('x-grid3-row-expanded', 'x-grid3-row-collapsed');
            this.fireEvent('collapse', this, record, body, row.rowIndex);
        }
    }
}); 

An use example where MemberDS = Ext.data.Store(...):

var expander = new Ext.grid.RowExpander({
            store: MemberDS,
            tpl : new Ext.XTemplate(
                '<fieldset><legend>Profile</legend>',
                '<tpl if="pic_id">',
                    '<img id="img_{pic_id}" src="/pics/{pic_id}?'+new Date().getTime()+'" /><br>'
                '</tpl>',
                '<b>ID:</b> {codea} {codeb}<br>',
                '<b>Gender:</b> {gender}<br>',
                '<b>DOB:</b> {dob}<br>',
                '<b>Category:</b> {category}<br>',
                '<b>Comments:</b> {comments}',
                '</fieldset>'
        )
}); 

[ricardolowe]

I am working an an EditorGridPanel in version 2.1. I searching for clues on how to wrap some Ext components into a RowExpander object.

Am I on the right path? I can see how to use the XTemplate to dump data into a RowExpander, but how would I go about dumping the Ext components (combobox,datefield,etc) for the related parent grid row into the RowExpander?

Any thoughts?

Only solution that comes to mind is to pass the datastore for a combobox and do <tpl for loop> over the data to build an HTML dropdown ( <select id={parentrow.id} > ), etc. That feels cheesy for some reason. Would rather use the Ext components.