For example, I would like to skip the password column while updating if the condition of password input is empty.
CREATE TABLE user
(   id VARCHAR NOT NULL PRIMARY KEY,
    name VARCHAR NOT NULL,
    password VARCHAR NOT NULL
);class User extends Phalcon\Mvc\Model
{   public $id;
    public $name;
    public $password;
   public function beforeUpdate() {
        if(isEmpty($this->password)){
            //skip $this->password;
        }
    }
}