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标题: 在 PHP 应用程序中集成 Google Calendar（5） [打印本页]

作者: look_w 时间: 2018-8-5 13:11 标题: 在 PHP 应用程序中集成 Google Calendar（5）

删除和修改已有的事件删除事件更简单：获得事件的唯一 URL 然后发送 DELETE 请求即可。对于 Zend 库来说，getCalendarEventEntry() 方法可以获得事件对象，然后调用对象的 delete() 方法。说明了该过程：
清单 6. 删除事件

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<?php
// load classes
require_once 'Zend/Loader.php';
Zend_Loader::loadClass('Zend_Gdata');
Zend_Loader::loadClass('Zend_Gdata_ClientLogin');
Zend_Loader::loadClass('Zend_Gdata_Calendar');
Zend_Loader::loadClass('Zend_Http_Client');

// connect to service
$gcal = Zend_Gdata_Calendar::AUTH_SERVICE_NAME;
$user = "username@gmail.com";
$pass = "pass";
$client = Zend_Gdata_ClientLogin::getHttpClient($user, $pass, $gcal);
$gcal = new Zend_Gdata_Calendar($client);

// retrieve event
// delete event
try {
  $event = $gcal->getCalendarEventEntry('http://www.google.com/calendar/
feeds/default/private/full/xxxxxxx');
  $event->delete();
} catch (Zend_Gdata_App_Exception $e) {
  echo "Error: " . $e->getResponse();
}
echo 'Event successfully deleted!';
?>

更新事件的过程与此类似：取得事件唯一的 URL 然后发送 PUT 请求，请求中包含更新的事件数据。对于 Zend 库，可以设置事件对象的属性然后通过 save() 方法保存到服务器上。如所示：
清单 7. 修改事件

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<?php
// load classes
require_once 'Zend/Loader.php';
Zend_Loader::loadClass('Zend_Gdata');
Zend_Loader::loadClass('Zend_Gdata_ClientLogin');
Zend_Loader::loadClass('Zend_Gdata_Calendar');
Zend_Loader::loadClass('Zend_Http_Client');

// connect to service
$gcal = Zend_Gdata_Calendar::AUTH_SERVICE_NAME;
$user = "username@gmail.com";
$pass = "pass";
$client = Zend_Gdata_ClientLogin::getHttpClient($user, $pass, $gcal);
$gcal = new Zend_Gdata_Calendar($client);

// retrieve event
// set new event properties and update event
try {
  $event = $gcal->getCalendarEventEntry('http://www.google.com/calendar/feeds/
default/private/full/xxxxxxxxxxx');
  $event->title = $gcal->newTitle($title);
  $when = $gcal->newWhen();
  $when->startTime = $start;
  $when->endTime = $end;
  $event->when = array($when);
  $event->save();
} catch (Zend_Gdata_App_Exception $e) {
  die("Error: " . $e->getResponse());
}
echo 'Event successfully modified!';
?>

集成日程表操作了解这些基本的知识后，现在看一个实际的应用。在的基础上增加了事件的编辑和删除链接。分别指向 edit.php 和 delete.php 脚本，使用 GET 方法向这些脚本传递事件标识符（从事件条目中提取）。
清单 8. 检索事件列表

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<!DOCTYPE html
  PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
  <head>
<title>Listing calendar contents</title>
<style>
body {
   font-family: Verdana;
}
li {
   border-bottom: solid black 1px;
   margin: 10px;
   padding: 2px;
   width: auto;
   padding-bottom: 20px;
}
h2 {
   color: red;
   text-decoration: none;
}
span.attr {
   font-weight: bolder;
}
</style>
  </head>
  <body>
<?php
require_once 'Zend/Loader.php';
Zend_Loader::loadClass('Zend_Gdata');
Zend_Loader::loadClass('Zend_Gdata_ClientLogin');
Zend_Loader::loadClass('Zend_Gdata_Calendar');
Zend_Loader::loadClass('Zend_Http_Client');

$gcal = Zend_Gdata_Calendar::AUTH_SERVICE_NAME;
$user = "username@gmail.com";
$pass = "pass";
$client = Zend_Gdata_ClientLogin::getHttpClient($user, $pass, $gcal);
$gcal = new Zend_Gdata_Calendar($client);

$query = $gcal->newEventQuery();
$query->setUser('default');
$query->setVisibility('private');
$query->setProjection('basic');

try {
   $feed = $gcal->getCalendarEventFeed($query);
} catch (Zend_Gdata_App_Exception $e) {
   echo "Error: " . $e->getResponse();
}
?>
<h1><?php echo $feed->title; ?></h1>
<?php echo $feed->totalResults; ?> event(s) found.
<p/>
<ol>

<?php
foreach ($feed as $event) {
   echo "<li>\n";
   echo "<h2>" . stripslashes($event->title) . "</h2>\n";
   echo stripslashes($event->summary) . " <br/>\n";
   $id = substr($event->id, strrpos($event->id, '/')+1);
   echo "<a href=\"edit.php?id=$id\">edit</a> | ";
   echo "<a href=\"delete.php?id=$id\">delete</a> <br/>\n";
   echo "</li>\n";
}
echo "</ul>";
?>
</ol>
<p/>
<a href="add.php">Add a new event</a><p/>
  </body>
</html>

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