[fw-webservices] Adding Update Profile Image functionality to Zend_Service_Twitter.

Hi People,
Just been banging my head over getting the twitter service to update a
profile image for a day! I've seen many many posts of people attempting this
with other libraries with no joy.

I have come up with a basic solution that the community may want to improve
apon :D

Seems like the Zend_Http_Client::request method could be allowed to handle
files attached outside of the 'files' param for services that require file
uploads to a non standard post variable.

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Start Code
----------------------------
<?php
/**
Extend Twitter class to add methods account/update_profile_image
Author: James A Helly.
*/

class Application_Service_Twitter extends Zend_Service_Twitter {

/**
* Update Profile Image
* @throws Zend_Http_Client_Exception if HTTP request fails or times out
*
* @return Zend_Rest_Client_Result
*/
public function accountUpdateProfileImage($data) {
$this->_init();

//Get HTTP OAuth Client.
$client = $this->_localHttpClient;
$client->setEncType(Zend_Http_Client::ENC_FORMDATA);
$client->setMethod(Zend_Http_Client::POST);

//Set Path to Method.
$path = '/1/account/update_profile_image.xml';
$uri = 'http://api.twitter.com';
$client->setUri($uri.$path);

//Manually Build the response body ala files, but its called image for
this method.
$body = "";
$boundary = '---ZENDHTTPCLIENT-' . md5(microtime());
$client->setHeaders(Zend_Http_Client::CONTENT_TYPE,
Zend_Http_Client::ENC_FORMDATA . "; boundary={$boundary}");
$fhead = array(Zend_Http_Client::CONTENT_TYPE =>
'image/'.$data['type']);
$body .= Zend_Http_Client::encodeFormData($boundary, 'image',
$data['image'], 'profile.jpg', $fhead);
$body .= "--{$boundary}--\r\n";
$client->setRawData($body);

//Go get the response.
$response = $client->request(Zend_Http_Client::POST);

return new Zend_Rest_Client_Result($response->getBody());
}

}

----------------------------
End Code
----------------------------

Let me know if you find it useful.
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