javascript — метод события вставки API Календаря Google V3

Я пытаюсь вставить событие в календарь Google, используя Google Calendar API v3.
Я создал представление add_event, в котором форма отображается с различными полями.
Я передаю данные в контроллер с помощью метода post для метода insert_event.
Я получаю данные, но не вставляю событие.
Я думаю, что проблема в этой строке: если ($ client-> getAccessToken ()) {

Кто-нибудь объяснит мне, что не так?

welcome.php // CI контроллер

    <?php

if (!defined('BASEPATH'))
exit('No direct script access allowed');

class Welcome extends CI_Controller {

public function index() {
echo 'Google Calendar API EXA';
//$this->load->view('welcome_message');
$this->load->view('add_event');
$this->load->helper('url');
error_reporting(E_ALL);
ini_set('display_errors', 'On');
//including google calendar api
set_include_path(get_include_path() . PATH_SEPARATOR . $_ENV['OPENSHIFT_REPO_DIR']);
include('application/libraries/google-api-php-client-exa/autoload.php');
include('application/libraries/google-api-php-client-exa/src/Google_Client.php');
include('application/libraries/google-api-php-client-exa/src/contrib/Google_CalendarService.php');

session_start();

if ((isset($_SESSION)) && (!empty($_SESSION))) {
echo "<br>".'There are cookies'."<br>";
echo "<pre>";
print_r($_SESSION);
echo "</pre>";
}

$client = new Google_Client();
$client->setApplicationName("Test Product");
$client->setClientId('its secret');
$client->setClientSecret('its secret');
$client->setRedirectUri('https://googlecalendar-apiexa.rhcloud.com/');
$client->setDeveloperKey('its secret');
$client->setUseObjects(true);
$cal = new Google_CalendarService($client);

if (isset($_GET['logout'])) {
echo "<br><br><font size=+2>Logging out</font>";
unset($_SESSION['token']);
}

if (isset($_GET['code'])) {
echo "<br>Google APi= " . $_GET['code'];
$client->authenticate($_GET['code']);
$_SESSION['token'] = $client->getAccessToken();
header('Location: http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF']);
echo "<br>I got the token = " . $_SESSION['token']; // <-- not needed to get here unless location uncommented
}

if (isset($_SESSION['token'])) {
echo "<br>".'Access Granted'."<br>";
$client->setAccessToken($_SESSION['token']);
}

$url = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
echo "<br><br><font size=+2><a href=$url?logout>Logout</a></font>";
}

public function insert_event() {
$summary = $this->input->post('summary');
$location = $this->input->post('location');
$timezone = $this->input->post('timezone');
$start_time = $this->input->post('start_time');
$end_time = $this->input->post('end_time');
echo $timezone;
echo $client;
if ($client->getAccessToken()) {
echo 'here';
$calList = $cal->calendarList->listCalendarList();
echo "<pre>";
echo "<hr><font size=+1>I have access to your calendar</font>";
$event = new Google_Event();
$event->setSummary($summary);
$event->setLocation($location);
$start = new Google_EventDateTime();
$start->setTimeZone($timezone);
$start->setDateTime($start_time);
$event->setStart($start);
$end = new Google_EventDateTime();
$end->setTimeZone($timezone);
$end->setDateTime($end_time);
$event->setEnd($end);
echo "<br>" . 'tests';
$createdEvent = $cal->events->insert('yuvraj.kumbhar@exateam.com', $event);
echo 'test5' . "<br>";
//echo $createdEvent->getId();
echo "</pre>";
echo "<br><font size=+1>Event created</font>";
echo "<hr><br><font size=+1>Already connected</font> (No need to login)";
} else {
//Request authorization
$authUrl = $client->createAuthUrl();
print "<hr><br><font size=+2><a href='$authUrl'>Connect Me!</a></font>";
print "Please visit:\n$authUrl\n\n";
/* print "Please enter the auth code:\n";
$authCode = trim(fgets(STDIN));
$accessToken = $client->authenticate($authCode);
$client->setAccessToken($accessToken); */
}
}

}/* End of file welcome.php */
/* Location: ./application/controllers/welcome.php *///add_event.php // CI view

<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css">

<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap-theme.min.css">

<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script>
<?php  $this->load->helper('url'); ?>
<?php  ?>
<div class="container-fluid">
<div class="row-fluid">
</div>
<?php //echo base_url();?>
<form method="post"action="<?php echo base_url();?>index.php/welcome/insert_event"name="add_event"id="add_event"role="form">

<div class="widget-box">
<div class="widget-title">
<h5>
Add Event
</h5>
</div>
<div class="control-group">
<label class="control-label"><span class="required">*</span>Summary</label>
<div class="controls">
<input type="text" id="summary" name="summary" value=" <?php echo (isset($summary)) ? $summary : '' ?>"/>

</div>
</div>
<div class="control-group">
<label class="control-label"><span class="required">*</span>Location</label>
<div class="controls">
<input type="text" id="location" name="location" value="<?php echo (isset($location)) ? $location : '' ?>"/>
</div>
</div>
<div class="control-group">
<label class="control-label"><span class="required">*</span>TimeZone</label>
<div class="controls">
<input type="text" id="timezone" name="timezone" value="<?php echo (isset($timezone)) ? $timezone : '' ?>"/>
</div>
</div>
<div class="control-group">
<label class="control-label"><span class="required">*</span>Start Time</label>
<div class="controls">
<input type="text" id="start_time" name="start_time" value="<?php echo (isset($start_time)) ? $start_time : '' ?>"/>
</div>
</div>
<div class="control-group">
<label class="control-label"><span class="required">*</span>End Time</label>
<div class="controls">
<input type="text" id="end_time" name="end_time" value="<?php echo (isset($end_time)) ? $end_time : '' ?>"/>
</div>
</div>
<br>        <input type="submit" value="Add Event">
<!--<button type="button" class="btn btn-primary" name="<?php //echo (isset($submit_name)) ? $submit_name : '' ?>"  onclick="handle_submit('<?php //echo $this->form_name ?>', '<?php //echo site_url($this->page_name . "/" . $submit_name) ?>');" value="<?php echo $submit_value; ?>">

<?php //echo $submit_value; ?> </button>-->
</div>
</form>
</div>