Not displaying star rating on production (heroku) - ruby-on-rails

Question

I'm using the gem ratyrate, and locally it works fine, but in production it generates a 404 error of the images.
Some solutions I found were these, but they do not work
/initializer/raty_helper.rb
https://github.com/wazery/ratyrate/blob/master/lib/ratyrate/helpers.rb
raty.js.rb
$.fn.raty.defaults.half = false;
$.fn.raty.defaults.halfShow = true;
$.fn.raty.defaults.path = '<%= asset_path('images') %>';
$.fn.raty.defaults.cancel = false;
$(function(){
$(".star").each(function() {
var $readonly = ($(this).attr('data-readonly') == 'true');
var $half = ($(this).attr('data-enable-half') == 'true');
var $halfShow = ($(this).attr('data-half-show') == 'true');
var $single = ($(this).attr('data-single') == 'true');
$(this).raty({
score: function() {
return $(this).attr('data-rating')
},
number: function() {
return $(this).attr('data-star-count')
},
half: $half,
halfShow: $halfShow,
single: $single,
path: $(this).attr('data-star-path'),
starOn: '/star-on.png',
starOff: '/star-off.png',
starHalf: '/star-half.png',
cancel: $(this).attr('data-cancel'),
cancelPlace: $(this).attr('data-cancel-place'),
cancelHint: $(this).attr('data-cancel-hint'),
cancelOn: '/cancel-on.png',
cancelOff: '/cancel-off',
noRatedMsg: $(this).attr('data-no-rated-message'),
round: $(this).attr('data-round'),
space: $(this).attr('data-space'),
target: $(this).attr('data-target'),
targetText: $(this).attr('data-target-text'),
targetType: $(this).attr('data-target-type'),
targetFormat: $(this).attr('data-target-format'),
targetScoret: $(this).attr('data-target-score'),
readOnly: $readonly,
click: function(score, evt) {
var _this = this;
if (score == null) { score = 0; }
$.post('<%= Rails.application.class.routes.url_helpers.rate_path %>',
{
score: score,
dimension: $(this).attr('data-dimension'),
id: $(this).attr('data-id'),
klass: $(this).attr('data-classname')
},
function(data) {
if(data) {
// success code goes here ...
if ($(_this).attr('data-disable-after-rate') == 'true') {
$(_this).raty('set', { readOnly: true, score: score });
}
}
});
}
});
});
});

Answer 1

Add to your your config/environments/production.rb:
config.serve_static_assets = true

Answer 2

The solution is to execute this command:
rails assets:precompile