userDomain publish

Meteor.publish('userDomain', function(domainName) {
  var domain,users;
  domain = Domains.find({name:domainName});
  if(domain.count() <= 0)
  {
    this.ready();
    return null;
  }
  var domainId = domain.fetch()[0]._id;
  if(!domainId)
  {
    this.ready();
    return null
  }
  if(!this.userId) 
  {
    this.ready();
    return null
  }

  var query = {};
  query['roles.' + domainId] = {$exists:true};
  users = Meteor.users.find(query,{
    fields:{username:1,roles:1}
  });
  return [domain,users];
});