If you want to add them as viewers and not collaborators just change
<gAcl:role value='writer'/> to <gAcl:role value='reader'/>.

If  you want to change them from collaborator to viewer you'll have to
write a method to PUT to
/feeds/acl/private/full/document%3Adocument_id/user%3Anew_writer%40example.com
(aka the user's edit link for that document).

<entry xmlns="http://www.w3.org/2005/Atom";
xmlns:gAcl='http://schemas.google.com/acl/2007'
       xmlns:gd='http://schemas.google.com/g/2005'
       gd:etag='W/"CUUNSXYyfCp7ImA9WxRVGUo."'>
  <category scheme='http://schemas.google.com/g/2005#kind'
term='http://schemas.google.com/acl/2007#accessRule'/>
  <gAcl:role value='reader'/>
  <gAcl:scope type='user' value='[email protected]'/>
</entry>

of if you want to batch it then use this and execute it as batch:
<entry>
    
<id>http://docs.google.com/feeds/acl/private/full/document%3Adocument_id/user%3Aold_writer%40example.com</id>
    <batch:operation type='update'/>
    <gAcl:role value='reader'/>
    <gAcl:scope type='user' value='[email protected]'/>
  </entry>


more details are available here:
http://code.google.com/apis/documents/docs/2.0/developers_guide_protocol.html#ACLOverview


On Wed, May 6, 2009 at 5:59 AM, Phaung <[email protected]> wrote:
>
> Ryan,
>
> I got it works now. Thank so much for your quick reply. Have you ever
> tried to change from collaborators to viewers?
>
> On May 5, 8:22 pm, Ryan Valdron <[email protected]> wrote:
>> What method were you using? I'm not 100% sure the batch one works as I
>> didn't test it.
>> I also have my own domain and am using it through there as well.
>>
>> Either way the URI passed in should be set 
>> tohttp://docs.google.com/feeds/acl/private/full/document%3A".$id; 
>> orhttp://docs.google.com/feeds/acl/private/full/document%3A".$id."/batch";;
>>
>> remember to set $id to the ID of the documents in google docs. Maybe
>> if you could echo what $uri is set to right before you make the call
>> and send me what you have it set to I can help a bit more.
>>
>> On Tue, May 5, 2009 at 5:59 AM, Phaung <[email protected]> wrote:
>>
>> > I am trying to test your code. But I have my own domain name.
>> > In that case, what the $uri parameter should be??
>> > I get the error "Passed parameter is not a valid HTTP URI."
>> > Thanks in advance.
>>
>> > On Apr 29, 11:44 pm, Ryan Valdron <[email protected]> wrote:
>> >> Trav,
>>
>> >> If you're using the Zend php api, I wrote a method in the Docs class
>>
>> >> public function addContributor($data, $uri, 
>> >> $className='Zend_Gdata_Entry'){
>> >>     return $this->insertEntry($data, $uri, $className);
>>
>> >> }
>>
>> >> that works similar to insertDocument.
>> >> where $uri = 
>> >> "http://docs.google.com/feeds/acl/private/full/document%3A".$id;
>> >> and $id is the document's ID.
>>
>> >> and $data follows this layout:
>> >> <entry xmlns="http://www.w3.org/2005/Atom";
>> >> xmlns:gAcl='http://schemas.google.com/acl/2007'>
>> >>   <category scheme='http://schemas.google.com/g/2005#kind'
>> >>     term='http://schemas.google.com/acl/2007#accessRule'/>
>> >>   <gAcl:role value='writer'/>
>> >>   <gAcl:scope type='user' value='[email protected]'/>
>> >> </entry>
>> >> as given in the developer's guide
>> >> (http://code.google.com/apis/documents/docs/2.0/developers_guide_proto...).
>>
>> >> You could also do it in a batch run using this function (untested)
>>
>> >> public function executeBatch($data, $uri,
>> >> $className='Zend_Gdata_App_Feed', $extraHeaders=array()){
>> >>         $response = $this->post($data, $uri, null, null, $extraHeaders);
>>
>> >>         $returnFeed = new $className($response->getBody());
>> >>         $returnFeed->setHttpClient(self::getstaticHttpClient());
>>
>> >>         $etag = $response->getHeader('ETag');
>> >>         if (!is_null($etag)) {
>> >>             $returnEntry->setEtag($etag);
>> >>         }
>>
>> >>         return $returnEntry;
>> >>     }
>>
>> >> in the App class. Where $data is laid out according to the link above
>> >> and $uri is the same as above with /batch at the end of it.
>>
>> >> Either way you're going to have to adjust the scope in the Docs
>> >> implementation from $scope = 'http://docs.google.com/feeds/documents';
>> >> to $scope = 'http://docs.google.com/feeds/';inorder for either
>> >> function to work.
>>
>> >> -Ryan
>>
>> >> On Wed, Apr 29, 2009 at 12:21 PM, Trav <[email protected]> wrote:
>>
>> >> > Hi,
>>
>> >> > I have completed the portion of my application that uploads a document
>> >> > to Google Docs with the PHP api, However, I need to invite
>> >> > collaborators to the document automatically through PHP, how can I
>> >> > accomplish this?
>>
>> >> > I am using Google docs on my own domain through Google Apps. The
>> >> > collaborators that I need to invite will all be in the same domain.
>>
>>
> >
>

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