Yii框架没有从库到控制器的函数(使用class.php文件)

时间:2013-03-18 19:23:04

标签: php web yii spotify

我正在使用一个名为MetaTune的Spotify库,并且能够在CodeIgniter中轻松完成这项工作,但是Yii出现了一些问题,但目前它已经开始说:

Fatal error: Call to undefined method stdClass::searchTrack() in ....public_html/Yii/news/protected/controllers/NewsController.php on line 67

然而,功能就在那里。此库中的文件都有 .class.php 后缀(例如 MetaTune.class.php ),并且libray文件都存储在:

yii/application/protected/vendors/Metatune

使用Codeigniter,我在文件夹外面添加了一个额外的spotify.php并自动加载到我的控制器,但我不确定是否有必要。

我已将其加载到 config.php 中:

    'import'=>array(
    'application.models.*',
    'application.components.*',
            'application.vendors.metatune.*',
),

以下是控制器代码:

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),
    ));
}

另请参阅下面的代码,其中有一个名为 getInstance 的函数,由于某种原因,它与Yii无法正常工作,我不确定是否可以更改此内容,因为我使用此函数将MetaTune导入到CodeIgniter控制器没有任何问题。

只是 MetaTune.class.php 代码的一部分:      

 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;
    } 

如果您有任何建议,我将非常感激。感谢。

1 个答案:

答案 0 :(得分:0)

您没有在任何地方初始化$spotify,并且默认情况下php已将其设置为stdClass,因为您使用该变量为成员属性分配了值,但是当您尝试调用未显示的方法时它失败了在它上面。

解决方案:在使用之前将其初始化

$spotify = MetaTune::getInstance();