Using Client Script and Script Include to populate a field

[Jamie Imms]

Hello,

With some googling, I attempted to create some functionality to populate a field on the Business Service form upon load. This is my first foray into scripting on the SNOW platform, so I'm having a little trouble.

The process is this:

1. Client loads a record from the Business Service table
2. Client Script calls a Script Include upon load
3. The Script Include grabs a value from an API call
4. The value retrieved is populated into a field on the Business Service form.

Here is the Client Script:

function onLoad() {
     //Type appropriate comment here, and begin script below
   var ga = new GlideAjax('GetSplynxFUPMonthUsedInGB');   
       ga.addParam('sysparm_name','execute');   
       ga.addParam('splynx_service_id', g_form.getValue('u_splynx_service_id'));   
       ga.getXML(MonthUsedAnswer);
function MonthUsedAnswer(response) {
var answer = response.responseXML.documentElement.getAttribute("answer");
g_form.setValue(u_Used_Quota, answer);
}
}

Here is the Script Include:

var GetSplynxFUPMonthUsedInGB = Class.Create();
GetSplynxFUPMonthUsedInGB.prototype = Object.extendsObject(AbstractAjaxProcessor, {   
execute: function() {             
                       var APIresponseBody = this.GetUsedBytesFromSplynx( this.getParameter('splynx_service_id') );
var UsedBytes = this.ParseSplynxResponseFromJson(APIresponseBody);
var UsedGB = this.ConvertBytesToGigabytes(UsedBytes);
return this.ConvertUsedGBtoString(UsedGB);   
             },   
 //Call the API which should give a response in JSON that includes the monthly usage
GetUsedBytesFromSplynx : function(splynx_service_id) {
var r = new sn_ws.RESTMessageV2('Splynx Check FUP Usage', 'GET');
r.setStringParameterNoEscape('splynx_service_id', ('splynx_service_id'));
//override authentication profile 
//authentication type ='basic'/ 'oauth2'
//r.setAuthentication(authentication type, profile name);
var response = r.execute();
var responseBody = response.getBody();
var httpStatus = response.getStatusCode();
return responseBody;
},
//Take the response from the API call, and parse the month_down value from it, which will be monthly usage in bytes
ParseSplynxResponseFromJson : function(APIresponseBody) {
var parser = new JSONParser();   
var parsed = parser.parse(APIresponseBody);
var UsedBytes = parsed.month_down;
return UsedBytes;
},
//Take the parsed month_down value in bytes, and convert it to Gigabytes
ConvertBytesToGigabytes :function(BytesConvertFrom)   {
var UsedGB = (BytesConvertFrom/1073741824);
return UsedGB;
},
//Take the converted GB integer and put it into a string for populating the field
ConvertUsedGBtoString :function(UsedGB)   {
var UsedQuota = (Used + ' GB');
return UsedQuota;
},
     type : 'GetSplynxFUPMonthUsedInGB'
});

So, straight away I get this error:

org.mozilla.javascript.EcmaError: Cannot set property "prototype" of undefined to "
function () {
       this.initialize.apply(this, arguments);
}
"
     Caused by error in sys_script_include.f17a70814fe4834012aeccce0310c732.script at line 3
           1: var GetSplynxFUPMonthUsedInGB = Class.Create();
           2: 
==>     3: GetSplynxFUPMonthUsedInGB.prototype = Object.extendsObject(AbstractAjaxProcessor, {   
           4: 
           5: execute: function() {             
           6:                         var APIresponseBody = this.GetUsedBytesFromSplynx( this.getParameter('splynx_service_id') );

I'm not sure what this means, I've followed the syntax for declaring the prototype from other Script Includes I could find.

[Shishir Srivast]

I hope you have script include as client callable?

Also, in your client script please have u_Used_Quota in quotes.

g_form.setValue('u_Used_Quota', answer);

[Jamie Imms]

Hi Shishir, yes the Script Include is Client Callable

[Shishir Srivast]

Can you please try with below by adding global, shouldn't matter but let's give a try.

GetSplynxFUPMonthUsedInGB.prototype = Object.extendsObject(global.AbstractAjaxProcessor, {

Also, please have variable name starting with sysparm: like sysparm_splynx_service_id: http://wiki.servicenow.com/index.php?title=GlideAjax#Using_GlideAjax

http://wiki.servicenow.com/index.php?title=GlideAjax#Using_GlideAjax

[Jamie Imms]

My Script Include is now this, but I am still getting the same EcmaError:

var GetSplynxFUPMonthUsedInGB = Class.Create();


GetSplynxFUPMonthUsedInGB.prototype = Object.extendsObject(global.AbstractAjaxProcessor, {   


execute: function() {             
                       var APIresponseBody = this.GetUsedBytesFromSplynx( this.getParameter('sysparm_splynx_service_id') );
var UsedBytes = this.ParseSplynxResponseFromJson(APIresponseBody);
var UsedGB = this.ConvertBytesToGigabytes(UsedBytes);
return this.ConvertUsedGBtoString(UsedGB);   
             },   

 //Call the API which should give a response in JSON that includes the monthly usage
GetUsedBytesFromSplynx : function(splynx_service_id) {
var r = new sn_ws.RESTMessageV2('Splynx Check FUP Usage', 'GET');
r.setStringParameterNoEscape('splynx_service_id', 'splynx_service_id');


//override authentication profile 
//authentication type ='basic'/ 'oauth2'
//r.setAuthentication(authentication type, profile name);


var response = r.execute();
var responseBody = response.getBody();
var httpStatus = response.getStatusCode();



return responseBody;
},


//Take the response from the API call, and parse the month_down value from it, which will be monthly usage in bytes
ParseSplynxResponseFromJson : function(APIresponseBody) {
var parser = new JSONParser();   
var parsed = parser.parse(APIresponseBody);
var UsedBytes = parsed.month_down;

return UsedBytes;
},


//Take the parsed month_down value in bytes, and convert it to Gigabytes
ConvertBytesToGigabytes :function(BytesConvertFrom)   {
var UsedGB = (BytesConvertFrom/1073741824);

return UsedGB;
},


//Take the converted GB integer and put it into a string for populating the field
ConvertUsedGBtoString :function(UsedGB)   {
var UsedQuota = (Used + ' GB');

return UsedQuota;
},


     type : 'GetSplynxFUPMonthUsedInGB'
});