onChange catalog client script to populate a field from a reference field ?

[yshah]

As shown in the figure of a catalog item, I have a reference field named 'Disk Name' and when a value is selected the field 'Current Disk Size' should be populated

I have the written the following script, but the pop up box is not closing once I select the value of the reference field and is giving me error 'getReference for disk_name not allowed: missing callback function as parameter'.   I am not sure how to make a callback function and pass it as a parameter. If that is needed then in what part of the script I should add it.

function onChange(control, oldValue, newValue, isLoading) {

  if (isLoading || newValue == '') {

          return;

    }

    //Type appropriate comment here, and begin script below            

                              var disk_name = g_form.getReference('disk_name');

                                                              var disk_size;

                                                              var disk_rec = new GlideRecord('x_aona_gcp_gcp_persistent_disks');

                                                              disk_rec.addQuery('sys_id',disk_name);

                                                              disk_rec.query();

                                                              while(disk_rec.next()){

                                                                                              //gs.info('inside while');

                                                                                              disk_size=disk_rec.disk_space;

                                                              }

                                                              g_form.setValue('c_disk_size',disk_size);

}

[yshah · Accepted solution]

Yes, it is a scopped app. But the issue was that we are querying on a record, which is wrong. The getReference method return us a complete record, so we just had to point to the right attribute.

The code here is as shown below.

function onChange(control, oldValue, newValue, isLoading) {
   if (isLoading || newValue == '') {
   return;
   }
   var disk_name = g_form.getReference('disk_name',fillRec);
}
function fillRec(response){
   var size = response.disk_space;
   g_form.setValue('c_disk_size',size);
}

And this will solve the issue.