Hi @adilaleepan ,
Your script is almost correct for adding a user to a favorites field when the "favorite" button is clicked, but let's clarify its use for a ServiceNow "List" type field. Typically, a ServiceNow List field stores values as a comma-separated string; each click should add the new user ID to this list, unless already present.
Guidelines for List Field Implementation
Confirm Field Type: Ensure your field u_favorite is of type "List" (not Reference or String).
Script Logic: Your script checks if the user is in the favorites already; if not, it adds their user ID to the field.
The following script will work for standard "List" (comma-separated string) type fields:
(function() {
var currentUser = gs.getUserID();
var currentFavorites = current.getValue('u_favorite') || '';
// Convert to array for easy checking
var favoritesArray = currentFavorites ? currentFavorites.split(',') : [];
if (favoritesArray.indexOf(currentUser) > -1) {
gs.addInfoMessage('Already in favorites!');
} else {
favoritesArray.push(currentUser);
current.setValue('u_favorite', favoritesArray.join(','));
current.update();
gs.addInfoMessage('Added to favorites successfully!');
}
action.setRedirectURL(current);
})();
This approach handles the field as an array and avoids duplicates.
If your "favorite" field is configured as a real ServiceNow List field, this method works as ServiceNow treats "List" fields as comma-separated strings behind the scenes.
Steps to Use in ServiceNow
Add this script to your UI Action that triggers on button click.
Make sure the "favorite" field exists and is the correct type on your table.
Test by clicking the Favorite button. Your user ID should be appended to the list field on the record each time, unless already present.
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Kind Regards,
Shaik Mohammed Mustaq
