How to remotely load options in auto complete using Typeahead?

I was studying typeahead.js with bootstrap 3 , and I'm trying to do a auto-complete that makes a request on the server to bring the list options.

This is the plugin I'm using:    GitHub Bootstrap 3 Typeahead

This is the function I use to create auto complete:

$(function(){
        var options = new Bloodhound({
            datumTokenizer: Bloodhound.tokenizers.whitespace,
            queryTokenizer: Bloodhound.tokenizers.whitespace,
            remote: {
                url: 'loadNameChoices',
                replace: function(url, uriEncodedQuery) {
                      return url + '?input=' + uriEncodedQuery
                },
            }
        });

        options.initialize();

        $('#nome').typeahead({source:options.ttAdapter()});
    })

When typing a letter in the field, the request is done on the server, which returns a json with the names. But autocomplete does not work.

What is the correct way to implement this remote autocomplete?

My back-end is done with grails tag. And on the front end I use bootstrap3 + jquery . p>

This is the service that returns the json with the names . This service works correctly.

def loadNameChoices(){
    render(contentType: "application/json") {
        service.loadNames(params['input'])
    }
}

If I simply do:

$('#nome').typeahead({
   source: ['TESTE','TESTE']
});

Autocomplete works. I think it's a problem with Bloodhound