Read the XML after load for error handling

Suite and Optimus Suite 5
#1

I have a grid that I load from the database:

oGrd.load("Objects_BRKR.ashx?action=Get");

If there is some sort of database error, I have some error handling that sends the back the relevant info in the XML.

<?xml version="1.0" encoding="utf-8"?> <rows> <result status="error" /> <error errorNo="8134" errorDescription="Oops! Blah, blah, blah" /> </rows>
The load may appear to be successful, just with zero rows being rendered.
However, I want to be able to look at the returned XML to determine if the status was “error” and then display an appropriate message to the user.

I was hoping the doAfterRefresh variant of load might help:

myGrid.load("grid.xml",doAfterRefresh);

But doAfterRefresh doesn’t appear to provide access to the XML response such as when you use window.dhx4.ajax.get:

window.dhx4.ajax.get("Objects_BRKR.ashx?action=Get", function(r){ var x = r.xmlDoc.responseXML; var result = x.getElementsByTagName("result")[0].attributes; var status = result.getNamedItem("status").nodeValue; if (status=="error"){ //display error dialog ] });

So, is there a way for me to access the XML after the load is finished to achieve my error handling requirement?

#2

In the interest of just getting things to work asap, I’ve decided to not use the simple myGrid.load() function.

Here’s my solution, in case it proves useful to someone else:

function loadObjects(){ window.dhx4.ajax.get("Objects_BRKR.ashx?action=Get", function(r){ var t = r.xmlDoc.responseText; var x = r.xmlDoc.responseXML; var result = x.getElementsByTagName("result"); var status = result[0].getAttribute("status"); if (status!="error"){ oGrd.parse(t); }else{ //display error dialog var error = x.getElementsByTagName("error"); var errorDescription = error[0].getAttribute("errorDescription"); dhtmlx.alert({ title:"Database retrieval failed", text:"Oh, this is embarassing!<br><br>"+errorDescription, ok:"Ok", callback:function(){} }); } }); }