[英]Yii framework not getting functions from library into controller (using class.php files)
我正在使用一個名為MetaTune的Spotify庫,並且能夠在CodeIgniter中輕松完成此操作,但是使用Yii遇到了一些麻煩的問題,但是目前它開始說:
Fatal error: Call to undefined method stdClass::searchTrack() in ....public_html/Yii/news/protected/controllers/NewsController.php on line 67
但是,該功能在那里。 該庫中的文件都有一個.class.php后綴(例如MetaTune.class.php ),而libray文件都存儲在:
yii/application/protected/vendors/Metatune
使用Codeigniter,我在文件夾之外創建了一個額外的spotify.php並將其自動加載到控制器中,但是我不確定是否有必要。
我已經用以下命令將其加載到我的config.php中:
'import'=>array(
'application.models.*',
'application.components.*',
'application.vendors.metatune.*',
),
這是控制器代碼:
public function actionView($id)
{
$model=$this->loadModel($id);
$spotify = MetaTune::getSomething();
$hello = $model->title;
Yii::import('application.vendors.metatune.MetaTune');
$spotify->autoAddTracksToPlayButton = true; // Will add all searches for tracks into a list.
$spotify->playButtonHeight = 330; // For viewing the entire playlist
$spotify->playButtonTheme = "dark"; // Changing theme
$spotify->playButtonView = "coverart"; // Changing view
try
{
$tracks = $spotify->searchTrack($hello);
$tracks = $spotify->getPlayButtonAutoGenerated($hello);
}
catch (MetaTuneException $ex)
{
die("<pre>Error\n" . $ex . "</pre>");
}
$song = 'tracks';
$this->render('view',array(
'model'=>$this->loadModel($id),
));
}
還請參見下面的代碼,該代碼中有一個名為getInstance的函數,由於某種原因它不能與Yii很好地配合使用,我不確定是否可以更改此設置,因為我使用它可以將MetaTune導入到CodeIgniter控制器中而沒有任何問題。
只是MetaTune.class.php代碼的一部分:
Yii::import('application.vendors.metatune.Artist');
Yii::import('application.vendors.metatune.Album');
Yii::import('application.vendors.metatune.Track');
Yii::import('application.vendors.metatune.CacheRequest');
Yii::import('application.vendors.metatune.MBSimpleXMLElement');
Yii::import('application.vendors.metatune.SpotifyItem');
Yii::import('application.vendors.metatune.MetaTuneException');
....
class MetaTune {
const CACHE_DIR = 'application/vendors/metatune/cache/'; // Cache directory (must be writable) relative to this file
const USE_CACHE = false; // Should caching be activated?
const CACHE_PREFIX = "METATUNE_CACHE_"; // prefix for cache-files.
const SERVICE_BASE_URL_SEARCH = "http://ws.spotify.com/search/1/";
const SERVICE_BASE_URL_LOOKUP = "http://ws.spotify.com/lookup/1/";
const PLAYBUTTON_BASE_URL = "https://embed.spotify.com/?uri=";
public $autoAddTracksToPlayButton = false;
private $list = array();
// Holds instance
private static $instance;
.....
public static function getSomething()
{
if (!isset(self::$instance))
{
$class = __CLASS__;
self::$instance = new $class;
}
return self::$instance;
}
.....
public function searchTrack($name, $page = 1)
{
$url = self::SERVICE_BASE_URL_SEARCH . "track?q=" . $this->translateString($name) .
$this->addPageSuffix($page);
$contents = $this->requestContent($url);
$xml = new MBSimpleXMLElement($contents);
$tracks = array();
foreach ($xml->track as $track)
{
$tracks[] = $this->extractTrackInfo($track);
}
if ($this->autoAddTracksToPlayButton) {
$this->appendTracksToTrackList($tracks);
}
return $tracks;
}
如果您有任何建議,我將不勝感激。 謝謝。
您沒有在任何地方初始化$spotify
,並且php在默認情況下將其設置為stdClass
,因為您正在使用該變量為成員屬性分配值,但是當您嘗試對其不存在的方法進行調用時,它失敗了。
解決方案:在使用前將其初始化
$spotify = MetaTune::getInstance();
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