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I can’t take full credit for this since I found some version of this function out there somewhere, but since it’s not that easy to find I thought I’d repost it. If you need to numerically sort multiple columns in a DataGrid without creating a separate method for each based on its dataField, then use this: /**
* Numerically sorts a column in the DataGrid.
*
* @param fieldName The string name for the dataField in the column that you want to sort.
*/
private function numericSortByField(fieldName:String):Function
{
return function(obj1:Object, obj2:Object):int
{
var value1:Number = (obj1[fieldName] == '' || obj1[fieldName] == null) ? null : new Number(obj1[fieldName]);
var value2:Number = (obj2[fieldName] == '' || obj2[fieldName] == null) ? null : new Number(obj2[fieldName]);
return ObjectUtil.numericCompare(value1, value2);
}
}
By default, the DataGrid’s sort converts your data to strings so this ensures it’s really doing a numeric sort (and is a generic one at that). Finish it off by making sure to set the sortCompareFunction for your columns like so: myColumn.sortCompareFunction = this.numericSortByField("myDataField");
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