Get a list of a user's roles from Parse, including child roles, up to a certain depth

get-roles.js

// Maximum depth is 3, after that we get a "" error from Parse
function getUserRoles(user) {
  var queries = [
    new Parse.Query('_Role').equalTo('users', user)
  ];
  for (var i = 0; i < 2; i++) {
    queries.push(new Parse.Query('_Role').matchesQuery('roles', queries[i]));
  }
  
  return user.rolesPromise = Parse.Query.or.apply(Parse.Query, queries).find().then(
    function(roles) {
      return roles.map(function(role) {
        return role.get('name');
      });
    }
  );
}