Typeahead.js - template settings ignored

Question

I'm trying to setup custom template with Typeahead.js

My code is:

var countries = new Bloodhound({
    datumTokenizer: function(d) {
        return Bloodhound.tokenizers.whitespace(d.value);
    },queryTokenizer: Bloodhound.tokenizers.whitespace,
    limit: 100,
    remote: {
        url: 'http://www.domain.com/json.php?action=countries&q=%QUERY'
    }
});

countries.initialize();

$('.lang').typeahead(null, {
    name: 'countries',
    source: countries.ttAdapter(),
    template: [
        '<p class="lang-id">{{lang_id}}</p>',
        '<p class="value">{{value}}</p>'
    ].join(''),
    engine: Hogan
});

It works fine, but the template setting is ignored - I still get default dropdown. What am I doing wrong?

EDIT: I also tried:

$('input').typeahead(null, {
  name: 'countries',
  displayKey: 'value',
  source: countries.ttAdapter(),
  templates: {
     empty: [
      '<div class="empty-message">',
      'no results found',
      '</div>'
    ].join('\n'),
    suggestion: '<p><strong>{{value}}</strong> – {{id}}</p>'
  },
  engine: Hogan
});

which throws an error:

Property 'suggestion' of object #<Object> is not a function

Answer 1

Looking at the documentation, you can see that the name is templates and not template - like in you show in your second example. The issue you have there is that suggestion needs to be a function, not a string. In the bottom example of custom templates you can see they use Handlebars.compile which returns a function which takes a single parameter containing the data to render a template with - and returns a string that is the generated HTML. If you do not want to use Handlebars you could do something like (please note that for simplicity I do not escape the data in my example. For a proper solution you should escape data.value and data.id to make sure you do not introduce XSS vulnerabilities):

$('input').typeahead(null, {
  name: 'countries',
  displayKey: 'value',
  source: countries.ttAdapter(),
  templates: {
     empty: [
      '<div class="empty-message">',
      'no results found',
      '</div>'
    ].join('\n'),
    suggestion: function(data){
      return '<p><strong>' + data.value + '</strong> - ' + data.id + '</p>';
    }
  },
  engine: Hogan
});