created_at->format('Y-m-d') //비교방법 : if ($client->created_at < new \DateTime('2024-01-01')) { protected $casts = []; public function __construct(array|null $data = null) { parent::__construct($data); } final public function getPK(): string { $field = constant("static::PK"); return $this->attributes[$field]; } final public function getTitle(): string { $field = constant("static::TITLE"); return $this->attributes[$field]; } final public function getUpdatedAt(): string { return $this->attributes['updated_at']; } final public function getCreatedAt(): string { return $this->attributes['created_at']; } //공통부분 }