Flex DataGrid Casting returning NULL object.
April 11th, 2007
I began working today on a new Cairngorm application that I copied from an existing application. The main feature of the application was allowing the user to select a row from a DataGrid and update its values.
1 2 | model.currentObj = evt.currentTarget.selectedItem; |
I had the remoting working fine with my Gateway and CFCs but selecting the row and assinging the object to the Model was not working. I used Mike Nimer’s Debug component to examine object after casting it but it was returning a null value. Below is my code that has worked in numerous projects:
After searching Adobe’s docs I realized that when object cannot be cast correctly, they simply return a null value. Therefore I set about trying to find <b>why</b> my objects weren’t being cast correctly. Could it be incorrect members types in the ActionScript and CFCs? Perhaps the CFPRPOERTY tags were in the wrong order?
After a couple of hours I finally realized that the metadata alias in the ActionScript had been fat-fingered. After correcting the package to the code below, the application worked like a champ!
1 2 3 | [RemoteClass(alias="com.bluemethod.MyVO")] public class MyVO implements ValueObject |
Categories: Flex
