Client callable Script Include returning null values to Client Side UI Action

[AirSquire]

Hi I am trying to pull some server side values to client side for use in UI Action(client side) using client callable script include. And getting a null value in the answer. Below are my both of the codes

UI Action(Form button, client, onClick function - commentsDialog())

function commentsDialog() {
	//Get the values to pass into the dialog
	var caller = g_form.getReference('caller_id', doAlert);
	
}
function doAlert(caller) {
	var location = caller.location;
	var ci = g_form.getValue('cmdb_ci');

	var ga = new GlideAjax("TogetModelAndLocationName");
	ga.addParam("sysparm_name", "getName");
	ga.addParam("sysparm_ci", ci);
	ga.addParam("sysparm_loc",location);
	ga.getXML(Callback);
	//alert(ga.getAnswer().toString());
}
function Callback(response){
	//var answer = JSON.parse(response);
	var answer = response.responseXML.documentElement.getAttribute("answer");
	alert(answer);
}

Script Include(client callable)

var TogetModelAndLocationName = Class.create();
TogetModelAndLocationName.prototype = Object.extendsObject(AbstractAjaxProcessor, {
	
	getName: function(){
		var modelname = '';
		var locationname = '';
		var name = '';
		var sysId = this.getParameter('sysparm_ci');
		var locsysID = this.getParameter('sysparm_loc');
		var model = new GlideRecord( 'cmdb_ci' );
		model.addQuery('sys_id',sysId);
		model.query();
		if( model.next() ){
			modelname = model.model_id.display_name;
		}
		var location = new GlideRecord('cmn_location');
		location.addQuery('sys_id',locsysID);
		location.query();
		if(location.next()){
			locationname = location.name;
		}
		name = modelname+','+locationname;
		gs.log(name,'air');
		return name;
	},
	
    type: 'TogetModelAndLocationName'
});

When I execute UI Action, it gives me a "null" as alert but the log generated from Script Include gives correct values. I tried JSON encoding of the return value and also tried synchronous call both result in no alerts.

[Alikutty A]

Can you try using getXMLAnswer() and see if it works

https://docs.servicenow.com/bundle/london-application-development/page/app-store/dev_portal/API_reference/GlideAjaxV3/concept/c_GlideAjaxV3API.html#r_GLAXV3-getXMLAnswer_F

[AirSquire]

Not working, still returning null values.

[Raj68]

Hi,

Please try the code after replacing double quote to single quote like below:

Line17: ("answer") should be in single quote like this ('answer').

NOTE: Mark correct or helpful if it helps you.

 Warm Regards,

Raj patel

[AirSquire]

That doesn't makes a difference, since both represent a string. Still I tried and again there is null output.

[bishopx]

I don't know your data structure, but this could be a problem.

modelname = model.model_id.display_name;

Do you want to get value of the field name "display_name" from the reference of the record in "model_id" field?
Or did you want to get the display name of the "model_id" field ? If yes, then you need to use getDisplayValue() function:

modelname = model.model_id.getDisplayValue();

I have encountered multiple instances of ServiceNow not return any error in the Client Script include to the log, and instead returning null to client.

Let me know

Jozef