How to pass "current" dynamically within GlideEvaluator.evaluateString() as parameter..

[Shariq Azim]

Hello Everyone,

I am trying to run a script stored on a field/variable of a record(ritm)..Now I do not plan to create the "script"  type field on the form, thus ,cannot use GlideScopedEvaluator API (https://developer.servicenow.com/dev.do#!/reference/api/paris/server_legacy/GlideEvaluatorAPI#GlideEvaluator-evaluateScript_GR_S_O?navFilter=evaluatesc) .

I am able to manage with  GlideEvaluator.evaluateString() function , but unfortunately not able to use it properly.

For example, if the string field on the record has the value new script_include().function_name(current).  I am able  to call the correct function using

//example logic and code
var ritm = new GlideRecord('sc_req_item');
ritm.addQuery('sys_id', sys_id);// ihave this captured 
ritm.query();
 if (ritm.next()) {

var val="new script_include().function_name(current)";
var func_val;
var ct=func_str.indexOf("current");
if (ct >0){
	func_val= func_str.substring(0,ct)+
ritm+func_str.substring(ct+7) ;
}
	else{
func_val= func_str;
}

gs.print( GlideEvaluator.evaluateString(val) ); //new GlideScopedEvaluator().evaluateScript(gr, ' script_field_name',null))
// cannot be use as i dont have a script type field

}

the script include contains the code:

function: function_name(current){
  var reqstr_str;
  var ret_str = '';
  gs.log("script  starts  ="+current.number.toString() );
     
ret_str= current.number.toString() ;
        return ret_str;
}

So the intention is to get  fields like variables, number and etc.  The above code is  just an example not the complete logic.

Unfortunately, I am getting an error

Javascript compiler exception: missing ] after element list (<refname>; line 1) in:
new script_include().function_name([object GlideRecord])

I expect to get the answers as:

RITM0148336 // for example

But, obviously current is not passed into the script include as a gliderecord object but as   string if dont replace the current string within the parenthesis.

Any idea how to solve this?

Regards,

Shariq

[Ankur Bawiskar · Accepted solution]

@Shariq 

see this example which is working fine

You need to pass the object with particular syntax

Script Include:

var getMyDetails = Class.create();
getMyDetails.prototype = {
	initialize: function() {
	},

	getMyNumber: function(obj) {
		gs.info('RITM number' + obj.number);
		return obj.number;
	},

	type: 'getMyDetails'
};

Calling it from scripts background:

var ritm = new GlideRecord('sc_req_item');
ritm.addQuery('sys_id', '95cd4c0bdb9d6410224a2a9a48961933'); 
ritm.query();
if (ritm.next()) {
var gc = GlideController;
gc.putGlobal('ritm', ritm);
var val = "new getMyDetails().getMyNumber(ritm)";
var ret = GlideEvaluator.evaluateString(val);
gs.info(ret);
}

Output:

Reference:

https://community.servicenow.com/community?id=community_question&sys_id=2f684beddb1cdbc01dcaf3231f96...

Regards
Ankur

[Shariq Azim]

Thank you @Ankur Bawiskar  this code helps.. Thank you for your response.. yes this was the missing element in my code.

[Ankur Bawiskar]

Glad to help

[Ankur Bawiskar]

Hi,

now your updated script below to handle the object

//example logic and code
var ritm = new GlideRecord('sc_req_item');
ritm.addQuery('sys_id', sys_id);// ihave this captured
ritm.query();
if (ritm.next()) {

var gc = GlideController;
gc.putGlobal('current', ritm);

var val="new script_include().function_name(current)";
var func_val;
var ct=func_str.indexOf("current");
if (ct >0){
    func_val= func_str.substring(0,ct)+
ritm+func_str.substring(ct+7) ;
}
    else{
func_val= func_str;
}

gs.print( GlideEvaluator.evaluateString(val) ); //new GlideScopedEvaluator().evaluateScript(gr, ' script_field_name',null))
// cannot be use as i dont have a script type field

}

Regards
Ankur