Delete document from Google Docs using Zend Gdata - php

Question

I am having trouble working with Google Docs and Zend Framework 1.11.4.
What I am attempting to do is upload a document to Google Docs, retrieve the HTML content and delete the document. I am working with .doc, .pdf, and .rtf files.
My code so far:
$client = Zend_Gdata_ClientLogin::getHttpClient(
'my#googleDocsEmail.address',
'MyPassword',
Zend_Gdata_Docs::AUTH_SERVICE_NAME
);
$gdClient = new Zend_Gdata_Docs($client);
$newDocumentEntry = $gdClient->uploadFile(
$file,
null,
null,
Zend_Gdata_Docs::DOCUMENTS_LIST_FEED_URI
);
$cv = file_get_contents($newDocumentEntry->getContent()->getSrc());
$newDocumentEntry->delete();
Everything works fine until the ->delete() method is called, it returns an exception Expected response code 200, got 409
I have been Googling this for a couple of days now but can find no answer, according to Googles documentation this is the correct way to delete a document.
If anyone has any idea as to what I am doing wrong then any help would be very welcome.
Many thanks in advance,
Garry

Answer 1

I was having the same 409 response issue when using the Zend_Gdata_Calendar library. There is an open bug on the Zend framework bugtracker. See http://zendframework.com/issues/browse/ZF-10194
It seems to boil down to the lack of a "If-Match" header being set by the Gdata_App class or one of the child classes in the chain.
To fix it for the Calendar API I've overridden the Zend_Gdata_Calendar class and instantiated my class instead of that one:
class Zend_Gdata_Calendar_Fixed extends \Zend_Gdata_Calendar {
/**
* Overridden to fix an issue with the HTTP request/response for deleting.
* #link http://zendframework.com/issues/browse/ZF-10194
*/
public function prepareRequest($method,
$url = null,
$headers = array(),
$data = null,
$contentTypeOverride = null) {
$request = parent::prepareRequest($method, $url, $headers, $data, $contentTypeOverride);
if($request['method'] == 'DELETE') {
// Default to any
$request['headers']['If-Match'] = '*';
if($data instanceof \Zend_Gdata_App_MediaSource) {
$rawData = $data->encode();
if(isset($rawData->etag) && $rawData->etag != '') {
// Set specific match
$request['headers']['If-Match'] = $rawData->etag;
}
}
}
return $request;
}
}
Then use it:
...
$gdata = new Zend_Gdata_Calendar_Fixed($httpClient);
...
I imagine you could do the same thing but overriding the Zend_Gdata_Docs class instead.