Script Include issue

[Mark Wood]

Hello Experts,

I want to make the description mandatory based on the caller's location if the caller's location is xyz then the description field on the incident form should be mandatory.

I have written on change client script and script include. but my script returned me null I am passing a boolean value from my script include. can anyone please guide me on why I am getting a null value I have pasted my script below. thank you.

Script include:

var CheckCallerLocation = Class.create();
CheckCallerLocation.prototype = Object.extendsObject(AbstractAjaxProcessor, {

getLocation:function()
{
var caller=this.getParameter('sysparm_user_name');
var gr=new GlideRecord('sys_user');
gr.addQuery('location.sys_id','bf86ffa797bbb990df62b3b6f053afef');
gr.addQuery('sys_id',caller);
gr.query();
var flag;
if(gr.next())
{
//return gr.location;

flag==true;
}
else{

	flag==false;
}
return flag;

},


    type: 'CheckCallerLocation'
});

onChange Client Script

var ga = new GlideAjax('global.CheckCallerLocation'); // HelloWorld is the script include class 
ga.addParam('sysparm_name','getLocation'); // helloWorld is the script include method 
ga.addParam('sysparm_user_name',newValue); // Set parameter sysparm_user_name to 'Bob' 
ga.getXML(callBack);  /* Call HelloWorld.helloWorld() with the parameter sysparm_user_name set to 'Bob' 
      and use the callback function HelloWorldParse() to return the result when ready */
alert("alert number 18");
// the callback function for returning the result from the server-side code
function callBack(response) {  
   var answer = response.responseXML.documentElement.getAttribute("answer"); 
    alert("alert 22"+answer);
}

[Jaspal Singh]

Hi Mark,

In Script include remove the == for setting a field. It is used for comparision.

Remove == and replace it with = (single equals to which is more of assignment)

[Vishal Birajdar]

Hello @Mark Wood 

Can you try like below :

Script include:

var CheckCallerLocation = Class.create();
CheckCallerLocation.prototype = Object.extendsObject(AbstractAjaxProcessor, {

getLocation:function()
{
var location;
var flag;
var caller=this.getParameter('sysparm_user_name');

var gr=new GlideRecord('sys_user');
gr.addQuery('sys_id',caller);
gr.query();
if(gr.next())
{
location = gr.getValue('location');
}

if (location == 'bf86ffa797bbb990df62b3b6f053afef'){
flag=true;
}else{
flag = false;
}

return flag;
},


    type: 'CheckCallerLocation'
});

Client script :

onChange Client Script

var ga = new GlideAjax('global.CheckCallerLocation'); // HelloWorld is the script include class 
ga.addParam('sysparm_name','getLocation'); // helloWorld is the script include method 
ga.addParam('sysparm_user_name',newValue); // Set parameter sysparm_user_name to 'Bob' 
ga.getXMLAnswer(callBack);  
      
// the callback function for returning the result from the server-side code
function callBack(answer) {  
  var result = answer;

if(result == true){
//make field mandatory
}else {
//to do
}
}

[Mark Wood]

Thank you @Vishal Birajdar and @Jaspal Singh .