PHP Collection::extract方法代码示例

 /**
  * Index method
  *
  * @return \Cake\Network\Response|null
  */
 public function index()
 {
     $releases = $this->Releases->find('all')->all();
     $collection = new Collection($releases);
     $attribute_names = array_unique($collection->extract('attribute_name')->toArray());
     $idps = array_unique($collection->extract('idp')->toArray());
     $releasesByIdp = $collection->groupBy('idp')->toArray();
     foreach ($idps as $idp) {
         foreach ($attribute_names as $attribute) {
             $releasesByIdPbyAttribute = $collection->match(['idp' => $idp, 'attribute_name' => $attribute]);
             $temp_result = $releasesByIdPbyAttribute->countBy(function ($result) {
                 return strtolower($result->validated) == 'fail' ? 'fail' : 'pass';
             });
             $results[$idp][$attribute] = $temp_result->toArray();
         }
     }
     # My attributes
     $persistentid_array = preg_split('/!/', $this->request->env('persistent-id'));
     $persistentid = end($persistentid_array);
     $myAttributesTemp = $this->Releases->find()->andWhere(['idp' => $this->request->env('Shib-Identity-Provider'), 'persistentid' => $persistentid])->all();
     $myAttributesCollection = new Collection($myAttributesTemp);
     $myAttributes = $myAttributesCollection->groupBy('attribute_name')->toArray();
     $this->set(compact('myAttributes'));
     $this->set('_serialize', ['myAttributes']);
     $this->set(compact('results'));
     $this->set('_serialize', ['results']);
     $this->set(compact('idps'));
     $this->set('_serialize', ['idps']);
     $this->set(compact('attribute_names'));
     $this->set('_serialize', ['attribute_names']);
 }

 /**
  * Tests extract
  *
  * @return void
  */
 public function testExtract()
 {
     $items = [['a' => ['b' => ['c' => 1]]], 2];
     $collection = new Collection($items);
     $map = $collection->extract('a.b.c');
     $this->assertInstanceOf('\\Cake\\Collection\\Iterator\\ExtractIterator', $map);
     $this->assertEquals([1, null], iterator_to_array($map));
 }

 public function getLibrary()
 {
     $this->viewBuilder()->layout("ajax");
     $this->autoRender = false;
     $this->loadModel('Playlists');
     $this->loadModel('Tracks');
     $userId = $this->request->session()->read('user.id');
     $library = $this->Playlists->find('all')->where(['user_id' => $userId])->contain('Tracks');
     if ($library->count() == 0) {
         echo json_encode(['success' => false]);
         return;
     }
     $library = $library->toArray();
     // remove tracks from playlists
     $libraryCollection = new Collection($library);
     $playlists = $libraryCollection->extract(function ($list) {
         unset($list->tracks);
         return $list;
     });
     // if tokens is expired get new downloadUrls
     // GAUTH: is token expired
     $gotUpdatedDownloadUrls = false;
     $client = new \Google_Client();
     $client->setAuthConfigFile('../client_secret.json');
     $client->addScope(\Google_Service_Drive::DRIVE);
     if ($this->request->session()->check('user.drive_token')) {
         $client->setAccessToken($this->request->session()->read('user.drive_token'));
         if ($client->isAccessTokenExpired()) {
             $gotUpdatedDownloadUrls = true;
         }
     } else {
         $gotUpdatedDownloadUrls = true;
     }
     $driveFiles = $this->getMusicFromDrive();
     $driveFileUrlById = (new Collection($driveFiles))->combine('id', function ($entity) {
         return str_replace("?e=download&gd=true", "", $entity['downloadUrl']);
     })->toArray();
     // create tracks by playlist id, also update new download_url if gotten it
     $tracksByPlaylistId = [];
     $tracksById = [];
     foreach ($library as $list) {
         $tracksByPlaylistId[$list->id] = [];
         foreach ($list->tracks as $track) {
             if ($gotUpdatedDownloadUrls) {
                 $this->Tracks->patchEntity($track, ['download_url' => $driveFileUrlById[$track->drive_id]]);
                 $this->Tracks->save($track);
             }
             $tracksByPlaylistId[$track->playlist_id][] = $track;
             $tracksById[$track->id] = $track;
         }
     }
     echo json_encode(['playlists' => $playlists, 'tracksByPlaylistId' => $tracksByPlaylistId, 'tracksById' => $tracksById]);
 }