ImageBehavior.php
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<?php
namespace common\behaviors;
use yii\base\Behavior;
use yii\base\Event;
use yii\db\ActiveRecord;
/**
* Class ImageBehavior
*
* @package common\behaviors
*/
class ImageBehavior extends Behavior
{
/**
* @var string column where file name is stored
*/
public $link;
/**
* @var string directory name
*/
public $directory;
/**
* @inheritdoc
*/
public function events()
{
return [
ActiveRecord::EVENT_BEFORE_DELETE => 'beforeDelete',
];
}
/**
* @param Event $event
*/
public function beforeDelete($event)
{
$file = $this->getImageFile();
if (file_exists($file)) {
unlink($file);
}
}
/**
* Get image file path
*
* @return null|string
*/
public function getImageFile()
{
$link = $this->link;
return empty( $this->owner->$link ) ? null : \Yii::getAlias(
'@storage/' . $this->directory . '/' . $this->owner->$link
);
}
/**
* Get image file url
*
* @param bool $dummy
*
* @return null|string
*/
public function getImageUrl($dummy = true)
{
$link = $this->link;
if (!empty( $this->owner->$link )) {
return '/storage/' . $this->directory . '/' . $this->owner->$link;
} elseif ($dummy) {
return '/storage/no-image.png';
} else {
return null;
}
}
}