How do you create a 'global' variable?

___miked___ · ‎01-02-2018

I'm looking for a simple way to pass a variable between forms so that the variable value is set onSubmit of the first form and is read onLoad of the second form. Totally new to ServiceNow and javaScripting so, after reading dozens of posts and following dozens of suggested links in those posts, I'm still coming up empty handed. In VB, you'd simply declare a global variable and call it when needed. Not sure what the counterpart is in JavaScript. Any help you can provide would be appreciated -- especially if you have a code snippet that you've used to do this in the past.

Thanks in advance for your help.

ChrisBurks · ‎01-03-2018

Ah I see. Then I would say the UI Action is a good bet.

If you just want to create a record populating the one field with the one field from the current record is perform a glide record script before the current.update().

Something like this:

var pvg_patient = new GlideRecord('pvg_patients'); // of course replace with the real name of the table

pvg_patient.client_number = current.client_number;

pvg_patient.insert();

current.update();

action.setRedirectUrl(pvg_patient); //redirects them to the "PVG Patients" form

action.setReturnUrl(current); //puts the previous form in this case 'PVG Client' form on the stack

And that should do it.

View solution in original post

SanjivMeher · ‎01-03-2018

Hi Mike,

What you need to do is on form layout of PVG Patient, search for the parent record field PVG Client. expand the record and you will see the client number. Move it to the right. So you wont even need an additional field on PVG Patient. You can utilize the existing field.

But If you still want to populate the field in PVG Patient, what you can do is write a Before insert business rule.

In the Set Value tab, set Client number = PVG Client->Client Number

Please mark this response as correct or helpful if it assisted you with your question.

___miked___ · ‎01-03-2018

So, here's how it ended up... works like a charm. Could never have done this without all the great input posted by all of you today. A special thanks to ChrisB for pointing me in the right direction and to Chris Ironside for pointing out the need to initialize the new glide record.- Thanks everyone.

UI Action Script to Create a New record on a different table and populate it with a value of a field from the current form.:

// Create a new record

var inst = new GlideRecord("x_166009_pocket_ve_pvg_test");

//Specify the target table the new record is to be stored in

var recordTarget = "x_166009_pocket_ve_pvg_test";

//Get the client number entered on the current form

var clientNo = current.getValue('client_number');

//Initialize the new patient record

inst.initialize();

//Set the client number field in the new patient record to the current record's client number

inst.client_number = clientNo;

//Insert the record into the patient target table

inst.insert();

//Redirect the load back to the current form and update the form

action.setRedirectURL(current);

current.update();