CDbException

325     public function setActive($value)
326     {
327         if($value!=$this->_active)
328         {
329             if($value)
330                 $this->open();
331             else
332                 $this->close();
333         }
334     }
335 

303      */
304     public function init()
305     {
306         parent::init();
307         if($this->autoConnect)
308             $this->setActive(true);
309     }
310 
311     /**
312      * Returns whether the DB connection is established.
313      * @return boolean whether the DB connection is established

382             if(!isset($config['enabled']) || $config['enabled'])
383             {
384                 Yii::trace("Loading \"$id\" application component",'system.CModule');
385                 unset($config['enabled']);
386                 $component=Yii::createComponent($config);
387                 $component->init();
388                 return $this->_components[$id]=$component;
389             }
390         }
391     }
392 

433      * Returns the database connection component.
434      * @return CDbConnection the database connection
435      */
436     public function getDb()
437     {
438         return $this->getComponent('db');
439     }
440 
441     /**
442      * Returns the error handler component.
443      * @return CErrorHandler the error handler application component.

618     {
619         if(self::$db!==null)
620             return self::$db;
621         else
622         {
623             self::$db=Yii::app()->getDb();
624             if(self::$db instanceof CDbConnection)
625                 return self::$db;
626             else
627                 throw new CDbException(Yii::t('yii','Active Record requires a "db" CDbConnection application component.'));
628         }

2304     public function __construct($model)
2305     {
2306         $this->_model=$model;
2307 
2308         $tableName=$model->tableName();
2309         if(($table=$model->getDbConnection()->getSchema()->getTable($tableName))===null)
2310             throw new CDbException(Yii::t('yii','The table "{table}" for active record class "{class}" cannot be found in the database.',
2311                 array('{class}'=>get_class($model),'{table}'=>$tableName)));
2312         if($table->primaryKey===null)
2313         {
2314             $table->primaryKey=$model->primaryKey();

382         if(isset(self::$_models[$className]))
383             return self::$_models[$className];
384         else
385         {
386             $model=self::$_models[$className]=new $className(null);
387             $model->_md=new CActiveRecordMetaData($model);
388             $model->attachBehaviors($model->behaviors());
389             return $model;
390         }
391     }
392 

397     public function getMetaData()
398     {
399         if($this->_md!==null)
400             return $this->_md;
401         else
402             return $this->_md=self::model(get_class($this))->_md;
403     }
404 
405     /**
406      * Refreshes the meta data for this AR class.
407      * By calling this method, this AR class will regenerate the meta data needed.

72         if($scenario===null) // internally used by populateRecord() and model()
73             return;
74 
75         $this->setScenario($scenario);
76         $this->setIsNewRecord(true);
77         $this->_attributes=$this->getMetaData()->attributeDefaults;
78 
79         $this->init();
80 
81         $this->attachBehaviors($this->behaviors());
82         $this->afterConstruct();