No items in youtube.playlists.list() results

[sergibondarenko]

"googleapis": "^16.1.0"

The are no playlist videos ids in the items property. And as far as I understand the items property must contain these videos, like in the following example:

 // Python
 results = youtube.playlists().list(
    part="snippet,localizations",
    id=playlist_id
  ).execute()

  playlist = results["items"][0]

https://developers.google.com/youtube/v3/docs/playlists/list

But I can't even find the items property inside the results object:

// Node.js
> results.i
request.isPrototypeOf  
request.init   

After some searching, I find only the playlist id:

// Node.js
> results.responseContent.body.items
[ { kind: 'youtube#playlist',
    etag: '"gMxXHe-zinKdE9lTnzKu8vjcmDI/cYPhPXIoWu4acW3Qux1D5WZ3WwE"',
    id: 'PLvxLmGsmqdZc-GYVeLhS0N_6jfrzEleQm' } ]

My code:

// Node.js
const google = require('googleapis');
const youtube = google.youtube('v3');
const secrets = require('./secrets.json');

const results = youtube.playlists.list({
  auth: secrets.web.api_key,
  part: 'id',
  id: 'PLvxLmGsmqdZc-GYVeLhS0N_6jfrzEleQm'
});

console.log(results);

Also, this question is on StackOverflow, without answer yet.

[sergibondarenko]

I used the wrong method to retrieve the playlist videos ids. The method to use is playlistItems:

// Node.js
youtube.playlistItems.list({
  key: secrets.web.api_key,
  part: 'id',
  playlistId: 'PLvxLmGsmqdZc-GYVeLhS0N_6jfrzEleQm',
  maxResult: 10,
}, (err, results) => {
  console.log(err ? err.message : results);
});

Results:

{ kind: 'youtube#playlistItemListResponse',
  etag: '"gMxXHe-zinKdE9lTnzKu8vjcmDI/yNg2QWLRo6QfzvyIRw0budHCuH0"',
  pageInfo: { totalResults: 2, resultsPerPage: 5 },
  items: 
   [ { kind: 'youtube#playlistItem',
       etag: '"gMxXHe-zinKdE9lTnzKu8vjcmDI/0Jz5kS7PkKi91IbsxgVYY7GSgqs"',
       id: 'UEx2eExtR3NtcWRaYy1HWVZlTGhTME5fNmpmcnpFbGVRbS41NkI0NEY2RDEwNTU3Q0M2' },
     { kind: 'youtube#playlistItem',
       etag: '"gMxXHe-zinKdE9lTnzKu8vjcmDI/K1fbB2gTY9QjMc4tGc7DG1PVjdU"',
       id: 'UEx2eExtR3NtcWRaYy1HWVZlTGhTME5fNmpmcnpFbGVRbS4yODlGNEE0NkRGMEEzMEQy' } ] }