RESTful API

class Api extends BaseController
{
    public function users(): ResponseInterface
    {
        $users = [/* ... */];

        return $this->response
            ->setStatusCode(200)
            ->setJSON([
                'success' => true,
                'count'   => count($users),
                'data'    => $users,
            ]);
    }
}

// 200 OK — 조회 성공
return $this->response->setStatusCode(200)->setJSON(['data' => $item]);

// 201 Created — 생성 성공
return $this->response->setStatusCode(201)->setJSON(['message' => '생성 완료', 'data' => $new]);

// 404 Not Found — 리소스 없음
return $this->response->setStatusCode(404)->setJSON(['error' => '존재하지 않습니다.']);

// 422 Unprocessable Entity — 유효성 검사 실패
return $this->response->setStatusCode(422)->setJSON(['errors' => $this->validator->getErrors()]);

// 401 Unauthorized — 인증 필요
return $this->response->setStatusCode(401)->setJSON(['error' => '토큰이 필요합니다.']);

// 버튼을 클릭하면 결과가 여기에 표시됩니다

public function createUser(): ResponseInterface
{
    $json  = $this->request->getJSON(true); // JSON body 파싱
    $rules = ['name' => 'required', 'email' => 'required|valid_email'];

    if (! $this->validate($rules)) {
        return $this->response->setStatusCode(422)
                              ->setJSON(['errors' => $this->validator->getErrors()]);
    }

    return $this->response->setStatusCode(201)
                          ->setJSON(['success' => true, 'data' => $json]);
}