Basic Retrival and Updating

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Eric Jensen

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Aug 25, 2013, 10:26:59 AM8/25/13

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I spent a few hours on this so I thought I'd write a note about it in case it was helpful for others.

The examples in the developer reference all use object oriented programming and I couldn't seem to get this to work. I'm using a Apache, PHP, MySQL installation on my computer and I've set everything up correctly with Google API projects.

The problem was one line of code:

$client->setUseObjects(true);

The script was connecting to Google Calendar, but was returning arrays, not array objects. This meant that simple code like

$eventList->getItems();

did not function correctly. I could parse the list of items with

foreach( $eventList['items'] as $event) {
//...
}

but the object oriented commands, such as the ones used to update events did not function. By adding the "setUseObjects" command all the object oriented commands started working.

Here is the script for getting the Events in a Calendar, finding a specific one and updating it's description (it is based on all the nice examples from the Google API references):

<?php
require_once 'Google_Client.php';//google-api-php-client/src/
require_once 'contrib/Google_CalendarService.php';
session_start();
$client = new Google_Client();
$client->setApplicationName("Simple Google Calendar Updater");
// Visit https://code.google.com/apis/console?api=calendar to generate your
// client id, client secret, and to register your redirect uri.
$client->setClientId('your client id');
$client->setClientSecret('your client secret');
$client->setRedirectUri('your redirec uri');
$client->setDeveloperKey('your api key');
$client->setUseObjects(true);
$service = new Google_CalendarService($client);
if (isset($_GET['logout'])) {
unset($_SESSION['token']);
}
if (isset($_GET['code'])) {
$client->authenticate($_GET['code']);
$_SESSION['token'] = $client->getAccessToken();
header('Location: http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF']);
}
if (isset($_SESSION['token'])) {
$client->setAccessToken($_SESSION['token']);
}
if ($client->getAccessToken()) {
echo '<!DOCTYPE HTML><html><body>' . "\n";

//Find the event
echo 'Looking for event with the Summary: "Work Meeting"' . '<BR>' . "\n";
$eventList = $service->events->listEvents('primary');
$items = $eventList->getItems();
$eventID = 'none';
foreach($items as $ev) {
$summary = $ev->getSummary();
if ($summary == "Work Meeting") {
$eventID = $ev->getId();
}
}

//Update the description
if ($eventID != 'none') {
$event = $service->events->get('primary', $eventID);

$event->setDescription('This is serious work');

$updatedEvent = $service->events->update('primary', $eventID, $event);

// Print the updated date.
echo 'The event was found and updated on: ' . $updatedEvent->getUpdated();
}
else {
echo 'Event not found!';
}

echo "</body></html>";
$_SESSION['token'] = $client->getAccessToken();
} else {
$authUrl = $client->createAuthUrl();

print "<a class='login' href='$authUrl'>Connect Me!</a>";

}
?>

I hope someone finds this helpful.

Rudy Preston

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Aug 25, 2013, 11:19:36 AM8/25/13

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Thanks for working for google for free.

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