PHP notice

Trying to get property of non-object

/var/www/html/Yii/WebRoot/app/protected/models/Category.php(194)

182         return true;
183     }   
184     
185     public static function findCategoryAliasById($id){
186         $category = Category::model()->findByPk($id);
187         return $category->alias;
188     }
189     
190     public static function pobierzMetaTitle($idKategorii) {
191             $category = Category::model()->find(array(
192                     'condition'=>'isDraft=0 AND id='.$idKategorii,
193             ));
194             return $category->metaTitle;
195     }
196     
197     public static function pobierzDescription($idKategorii) {
198             $category = Category::model()->find(array(
199                     'condition'=>'isDraft=0 AND id='.$idKategorii,
200             ));
201             return strip_tags($category->desctription);
202     }
203 
204 
205     public static function items() {
206         if(empty(self::$_items))

Stack Trace

#0
+
 /var/www/html/Yii/WebRoot/app/protected/controllers/SearchController.php(25): Category::pobierzMetaTitle("20")
20         if ($this->przekierujNaDedykowanyKontroler($alias)){
21             $this->redirect($this->przekierujNaDedykowanyKontroler($alias));
22         }
23         
24 
25         $this->pageTitle = Category::model()->pobierzMetaTitle($model->id);
26         Yii::app()->clientScript->registerMetaTag(Category::model()->pobierzDescription($model->id), 'description');
27 
28         $product = $this->pobierzProduktZwartosciamiDomyslnymi($model->id);
29 
30         $this->performAjaxValidation($product);
#10
+
 /var/www/html/Yii/WebRoot/app/index.php(18): CApplication->run()
13 defined('YII_DEBUG') or define('YII_DEBUG',true);
14 // specify how many levels of call stack should be shown in each log message
15 defined('YII_TRACE_LEVEL') or define('YII_TRACE_LEVEL',3);
16 
17 require_once($yii);
18 Yii::createWebApplication($config)->run();
19 // Yii::app()->cache(0);
20 
2024-03-28 14:02:12 Apache/2.4.25 (Debian) Yii Framework/1.1.15