/**
 * A test which demonstrates maven's recursive inheritance where
 * a distinct value is taken from each parent contributing to
 * the final model of the project being assembled. There is no
 * overriding going on amongst the models being used in this test:
 * each model in the lineage is providing a value that is not present
 * anywhere else in the lineage. We are just making sure that values
 * down in the lineage are bubbling up where they should.
 *

Asenkron çalışabilme NodeJS in popüler olmasının sebebi (paralel olamasa bile) ve Go dilini güçlü yapan özelliktir.

Ve bu **FastAPI** ile elde ettiğiniz performans düzeyiyle aynıdır.

# Body - Fields { #body-fields }

The same way you can declare additional validation and metadata in *path operation function* parameters with `Query`, `Path` and `Body`, you can declare validation and metadata inside of Pydantic models using Pydantic's `Field`.

## Import `Field` { #import-field }

First, you have to import it:

{* ../../docs_src/body_fields/tutorial001_an_py310.py hl[4] *}


/// warning

If you want to secure your API, there are several better things you can do, for example:

* Make sure you have well defined Pydantic models for your request bodies and responses.
* Configure any required permissions and roles using dependencies.
* Never store plaintext passwords, only password hashes.

	ErrTooManyRequests
	ErrInvalidRequest
	ErrTransitionStorageClassNotFoundError
	// MinIO storage class error codes
	ErrInvalidStorageClass
	ErrBackendDown
	// Add new extended error codes here.
	// Please open a https://github.com/minio/minio/issues before adding
	// new error codes here.

	ErrMalformedJSON
	ErrAdminNoSuchUser
	ErrAdminNoSuchUserLDAPWarn
	ErrAdminLDAPExpectedLoginName

# 응답 - 상태 코드 변경

기본 [응답 상태 코드 설정](../tutorial/response-status-code.md){.internal-link target=_blank}이 가능하다는 걸 이미 알고 계실 겁니다.

하지만 경우에 따라 기본 설정과 다른 상태 코드를 반환해야 할 때가 있습니다.

## 사용 예

예를 들어 기본적으로 HTTP 상태 코드 "OK" `200`을 반환하고 싶다고 가정해 봅시다.

하지만 데이터가 존재하지 않으면 이를 새로 생성하고, HTTP 상태 코드 "CREATED" `201`을 반환하고자 할 때가 있을 수 있습니다.

이때도 여전히 `response_model`을 사용하여 반환하는 데이터를 필터링하고 변환하고 싶을 수 있습니다.

이런 경우에는 `Response` 파라미터를 사용할 수 있습니다.

## `Response` 파라미터 사용하기

And it normally is a complex and "difficult" topic.

In many frameworks and systems just handling security and authentication takes a big amount of effort and code (in many cases it can be 50% or more of all the code written).

**FastAPI** provides several tools to help you deal with **Security** easily, rapidly, in a standard way, without having to study and learn all the security specifications.

Casdoor is a UI-first centralized authentication / Single-Sign-On (SSO) platform supporting OAuth 2.0, OIDC and SAML, integrated with Casbin RBAC and ABAC permission management. This document covers configuring Casdoor identity provider support with MinIO.

## Prerequisites

Configure and install casdoor server by following [Casdoor Server Installation](https://casdoor.org/docs/basic/server-installation).

     * We can't instantiate the class with null, so we can't directly test this method's behavior with null.
     * However, the constructor logic `!isCredentialTypeCorrect()` covers this.
     * If `new PacCredentialType(null)` throws, it implies `isCredentialTypeCorrect()` returned false for null.
     */
    @Test
    void testIsCredentialTypeCorrectWithNullData() {

{* ../../docs_src/body_multiple_params/tutorial002_py310.py hl[20] *}


In this case, **FastAPI** will notice that there is more than one body parameter in the function (there are two parameters that are Pydantic models).

So, it will then use the parameter names as keys (field names) in the body, and expect a body like:

```JSON
{
    "item": {
        "name": "Foo",
        "description": "The pretender",