How to create folder with the latest API?

[peeInMyPantz]

Hi,

I'm trying to create folder with the new API without success. Are
there any sample available for this?

[Greg Robbins]

The docs server seems to be requiring that the posted folder entry have a label in its category, though the server shouldn't require that.

Here's a sample that works:

  GDataEntryFolderDoc *docEntry = [GDataEntryFolderDoc documentEntry];

  // add a category that includes a "folder" label to work around the server issue
  GDataCategory *category = [GDataCategory categoryWithScheme:kGDataCategoryScheme
                                                         term:kGDataCategoryFolderDoc];
  [docEntry setCategories:[NSArray arrayWithObject:category]];
  [category setLabel:@"folder"];
 
  [docEntry setTitleWithString:@"My New Folder"];

  NSURL *postURL = [[docListFeed postLink] URL];
 
  [service fetchDocEntryByInsertingEntry:docEntry
                              forFeedURL:postURL
                                delegate:self
                       didFinishSelector:@selector(createFolderTicket:finishedWithEntry:)
                         didFailSelector:@selector(createFolderTicket:failedWithError:)];

[honcheng]

Looks like I left out category, and I was looking out for something
that looks like setLabel.

Thanks

[Greg Robbins]

The library includes a category in the entry returned by [GDataEntryFolderDoc documentEntry], but that category lacks a label (as the server really should not require a label.)

[honcheng]

Thanks.

At the moment, is it possible to create folders and upload spreadsheet directly to the folder? Or do I have upload the spreadsheet separately and move it into the folder?

[Greg Robbins]

I would guess that you can insert a new entry directly into a folder's feed, but I have not tried it.

[Brandon]

On Nov 19, 11:39 pm, Greg Robbins <grobb...@google.com> wrote:
> I would guess that you can insert a new entry directly into a folder's feed,
> but I have not tried it.

I've tried inserting an entry into a folder feed's post and self
links. If I use the post link neither the success nor failure
selectors get called. Trying the self link gets me into the failure
selector with a 400 error and the logs show "Invalid Request URI". I'm
not sure what to try next.

[Greg Robbins]

I just tried fetching a folder's feed, then uploading a new document directly into the folder, and it worked fine.

Here's the code I used to upload to the folder's feed:

NSURL *postURL = [[folderFeed postLink] URL];

GDataEntryDocBase *docEntry = [GDataEntryStandardDoc documentEntry];
[docEntry setTitleWithString:@"new file"];
[docEntry setUploadData:[@"abcdefg" dataUsingEncoding:NSUTF8StringEncoding]];
[docEntry setUploadMIMEType:@"text/plain"];
[docEntry setUploadSlug:@"newfile.txt"];

ticket = [service fetchDocEntryByInsertingEntry:docEntry
  forFeedURL:postURL
  delegate:self
  didFinishSelector:@selector(uploadToFolderTicket:finishedWithEntry:)
  didFailSelector:@selector(uploadToFolderTicket:failedWithError:)];

If neither the success nor failure selector is called, then I suspect there's an error in your code, as one or the other should always be called (unless the ticket returned is nil, indicating that the server fetch couldn't be done.)

[Brandon]

I tried your code and I'm getting a nil ticket. I did a copy/paste, so
I'm guessing the error has to be in my code for fetching the folder's
feed. But I thought I had that part figured out already.

For test purposes, I get a list of folders and then pick the first one
returned. Using that entry's selfLink I fetch the folder's feed, which
calls testTicket:finishedWithFeed:, which contains the code you posted
above. Everything appears to work up to that point. But, the insert
request then returns a nil ticket.

Here's the callback for the folder list request...

- (void) folderListTicket:(GDataServiceTicket *)ticket
finishedWithFeed:(GDataFeedDocList *)object
{
for( GDataEntryDocBase *doc in [object entries] )
{
NSString* name = [[doc title] stringValue];
NSLog(@"name = %@", name);

// Fetch the folder's feed object
GDataServiceTicket* ticket = [appDelegate.docService
fetchDocsFeedWithURL:[[doc selfLink] URL]
delegate:self
didFinishSelector:@selector(testTicket:finishedWithFeed:)
didFailSelector:@selector(ticket:failedWithError:)];
return; // Use only the first matching entry
}
}

[Greg Robbins]

The self link for a folder entry (or for any other entry) gets a fresh copy of the entry, not the folder's feed. You can get the folder feed from the folder entry's content element:

  NSString *folderFeedURI = [[folderEntry content] sourceURI];
  if (folderFeedURI != nil) {
    NSURL *folderFeedURL = [NSURL URLWithString:folderFeedURI];
  ...

Getting a nil ticket back is really unusual. Set a breakpoint in GDataServiceBase's fetchObjectWithURL: method to figure out what's happening. My guess is that you're trying to post into a entry, which lacks a post link, rather than into a feed and hence the "feed post URL" passed to the fetch call is nil.

I've also updated the DocsSample on top-of-trunk in the project's svn repository to show how to move documents in and out of a folder feed.

[Brandon]

On Nov 23, 5:01 pm, Greg Robbins <grobb...@google.com> wrote:
> The self link for a folder entry (or for any other entry) gets a fresh copy
> of the entry, not the folder's feed. You can get the folder feed from the
> folder entry's content element:

Ah, that's where I was going wrong. I must need to take a closer look
at the protocol, because these things just aren't obvious to me yet.
Thanks.

> Getting a nil ticket back is really unusual. Set a breakpoint in
> GDataServiceBase's fetchObjectWithURL: method to figure out what's
> happening. My guess is that you're trying to post into a entry, which lacks
> a post link, rather than into a feed and hence the "feed post URL" passed to
> the fetch call is nil.

That was exactly the problem. Good catch.

> I've also updated the DocsSample on top-of-trunk in the project's svn
> repository to show how to move documents in and out of a folder feed.

I'll take a look. Thanks.