Question

I have a list of Google Apps users in a spreadsheet that I want to wash against the UserManager service to make sure what’s in the spreadsheet is correct. Is there any way to determine if a user exists so that the script can continue running without a fatal exception? At the moment. if I execute something like:

var userID = "foo";
var ga = UserManager.getUser(userID).getEmail();

And foo doesn’t exist, Apps Script halts and returns:

Bad request: EntityDoesNotExist(1301): foo (line 34)

It’d be nice to be able to handle this more cleanly so that the script can continue running by doing something like:

var userID = "foo";
var ga = UserManager.getUser(userID).getEmail();
if (ga.exists == true) {
  // update
} else {
  // create
};

Thanks for your help!

Answer 1

You can use try/catch to check if there’s an error and continue:

http://www.w3schools.com/js/js_try_catch.asp

try {
  ga = UserManager.getUser(userID);
  //user exists
  //... update
} catch(err) {
  //don't exist 
  //... create
}