fullcalendar not show a events with codeigniter - php

Question

I'm trying to make a calendar with "FullCalendar" and codeigniter. I have read several questions on this page, but still do not understand because the calendar does not show me the events.
I have this routes:
$route['calendar'] = 'user/calendar/showCalendar';
$route['calendar/events'] = 'user/calendar/getEvents';
This is the controller:
public function showCalendar()
{
$this->template->add_css(base_url() . 'assets/plugins/fullcalendar/fullcalendar.min.css');
$this->template->add_js('https://code.jquery.com/ui/1.11.1/jquery-ui.min.js');
$this->template->add_js('https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.7.0/moment.min.js');
$this->template->add_js(base_url() . 'assets/plugins/fullcalendar/fullcalendar.min.js');
$this->template->add_js(base_url() . 'assets/plugins/fullcalendar/config.js');
$data = array();
$this->template->write('title', 'Calendar', TRUE);
$this->template->write_view('header', 'user/template/header');
$this->template->write_view('sidebar', 'user/template/sidebar');
$this->template->write_view('content', 'user/calendar/calendar', $data, TRUE);
$this->template->render();
}
public function getEvents()
{
if($this->input->is_ajax_request())
{
$events = $this->calendar_mdl->getEvents();
echo json_encode($events);
}
}
My config.js:
$(function () {
/* initialize the external events
-----------------------------------------------------------------*/
function ini_events(ele) {
ele.each(function () {
// create an Event Object (http://arshaw.com/fullcalendar/docs/event_data/Event_Object/)
// it doesn't need to have a start or end
var eventObject = {
title: $.trim($(this).text()) // use the element's text as the event title
};
// store the Event Object in the DOM element so we can get to it later
$(this).data('eventObject', eventObject);
// make the event draggable using jQuery UI
$(this).draggable({
zIndex: 1070,
revert: true, // will cause the event to go back to its
revertDuration: 0 // original position after the drag
});
});
}
ini_events($('#external-events div.external-event'));
/* initialize the calendar
-----------------------------------------------------------------*/
//Date for the calendar events (dummy data)
var date = new Date();
var d = date.getDate(),
m = date.getMonth(),
y = date.getFullYear();
$('#calendar').fullCalendar({
header: {
left: 'prev,next today',
center: 'title',
right: 'month,agendaWeek,agendaDay'
},
buttonText: {
today: 'hoy',
month: 'mes',
week: 'semana',
day: 'dia'
},
//Random default events
editable: true,
events: "http://project.dev/calendar/events"
});
});
And my model:
public function getEvents()
{
$this->db->select('*');
$this->db->order_by('id', 'DESC');
$query = $this->db_get(dbCalendar); // dbCalendar is a constant
if($query->num_rows() > 0)
{
return $query->result_array();
}
return FALSE;
}
It is the first time I try to use fullCalnedar, and I do not understand why it don't show me my events. I read the documentation, but don't it did not helped me to find out what the error may be.