/**
* Change our filename to match our own naming convention
* @return bool
*/
public function beforeValidate()
{
//(optional) Generate a random name for our file to work on preventing
// malicious users from determining / deleting other users' files
if ($this->secureFileNames) {
//$this->filename = sha1( Yii::app( )->user->id.microtime( ).$this->name);
$this->filename = sha1(Yii::$app->user->id . microtime() . $this->image_name);
$this->filename .= "." . $this->file->getExtensionName();
}
return parent::beforeValidate();
}