Google API Contacts v.3, PHP: add a contact to the group

Question

I successfully managed to create a new contact with cURL, but when I want to add group membership for this contact, I get 400 error. I've read this docs and made the same request, but it didn't work. What am I doing wrong? Thanks for any ideas! This is how I create an XML with group information: ``` $doc = new DOMDocument('1.0', 'UTF-8'); $doc->formatOutput = true; $entry = $doc->createElement('entry'); $entry->setAttribute('gd:etag', $etag); $doc->appendChild($entry); $category = $doc->createElement('category'); $category->setAttribute('scheme', 'http://schemas.google.com/g/2005#kind'); $category->setAttribute('term', 'http://schemas.google.com/contact/2008#contact'); $entry->appendChild($category); $id = $doc->createElement('id', 'http://www.google.com/m8/feeds/contacts/default/base/'.$idgmail); $entry->appendChild($id); $updated = $doc->createElement('updated', $update_info); $entry->appendChild($updated); // Add group info (My Contacts) $group = $doc->createElement('gContact:group…

Accepted Answer

OK, I've figured it out by myself:) 1) First of all, to update a contact you should use PUT request, not POST. 2) In your XML you can't use "default" (you'll get another error), you should use the full email address:

```
$group = $doc->createElement('gContact:groupMembershipInfo');
$entry->appendChild($group);
$group->setAttribute('deleted', 'false');
$group->setAttribute('href', 'http://www.google.com/m8/feeds/groups/user.email@gmail.com/base/6');  
```

3) You will get 400 error if you haven't specified the namespace gContact. The whole thing for the entry tag should look like this:

```
$entry = $doc->createElement('entry');
$entry->setAttribute('xmlns', 'http://www.w3.org/2005/Atom');
$entry->setAttribute('xmlns:gd', 'http://schemas.google.com/g/2005');
$entry->setAttribute('xmlns:gContact', 'http://schemas.google.com/contact/2008');
$doc->appendChild($entry); 
```

4) Finally, to add a contact to a particular group, you don't need to update it (as I thought from the docs), you can do it while creating a contact (yes, now it seems obvious). If you try to update a contact's group without creating it first, you'll get 400 error (Entry does not have any fields set). Hope this will help somebody! P.S. To solve these problems I used "OAuth 2.0 Playground" by Google, very useful! https://developers.google.com/oauthplayground/

Google API Contacts v.3, PHP: add a contact to the group

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