protected function isNotRequired($key)
    {
        return strstr($this->rules[ $key ], '!required') && !strstr($this->rules[ $key ], '!required_');
    }
protected function isNotRequired($key)
    {
        return strstr($this->rules[ $key ], '!required') && !strstr($this->rules[ $key ], '!required_');
    }
protected function isNotRequired ( $ key ) { return strstr ( $ this -> rules [ $ key ] , '!required' ) && ! strstr ( $ this -> rules [ $ key ] , '!required_' ) ; }
Si la valeur n'est pas strictement requise.

@param string $key Nom du champ.

@return bool
Si la valeur n est pas strictement requise .