重要的是，通过使用标准的 Python 类型，而且只在一个地方声明（而不是添加更多类、装饰器等），**FastAPI** 会为你完成大量工作。

/// info | 信息

如果你已经读完所有教程，又回来想进一步了解类型，一个不错的资源是 [`mypy` 的“速查表”](https://mypy.readthedocs.io/en/latest/cheat_sheet_py3.html)。

/// tip

SQLModel will have migration utilities wrapping Alembic, but for now, you can use [Alembic](https://alembic.sqlalchemy.org/en/latest/) directly.

///

### Create a Hero { #create-a-hero }

Because each SQLModel model is also a Pydantic model, you can use it in the same **type annotations** that you could use Pydantic models.

 * ...
 * }
 *
 * <h3>Views</h3>
 *
 * <p>Much of the power of the multimap API comes from the <i>view collections</i> it provides.
 * These always reflect the latest state of the multimap itself. When they support modification, the
 * changes are <i>write-through</i> (they automatically update the backing multimap). These view
 * collections are:
 *
 * <ul>

// separated by periods. Each label can contain lowercase ascii
// letters, decimal digits and hyphens, but must not begin or end with
// a hyphen. See:
// http://docs.aws.amazon.com/AmazonS3/latest/dev/BucketRestrictions.html
func IsValidBucketName(bucket string) bool {
	// Special case when bucket is equal to one of the meta buckets.
	if isMinioMetaBucketName(bucket) {
		return true
	}

)

// PutBucketReplicationConfigHandler - PUT Bucket replication configuration.
// ----------
// Add a replication configuration on the specified bucket as specified in https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutBucketReplication.html
func (api objectAPIHandlers) PutBucketReplicationConfigHandler(w http.ResponseWriter, r *http.Request) {
	ctx := newContext(r, w, "PutBucketReplicationConfig")

 * ```
 *
 * ## Force a Cache Response
 *
 * Sometimes you'll want to show resources if they are available immediately, but not otherwise.
 * This can be used so your application can show *something* while waiting for the latest data to be
 * downloaded. To restrict a request to locally-cached resources, add the `only-if-cached`
 * directive:
 *
 * ```java
 * Request request = new Request.Builder()

ies/apache-maven-4.0.0-alpha-2-bin.tar.gz http://archive.apache.org/dist/maven/maven-4/4.0.0-alpha-2/source/apache-maven-4.0.0-alpha-2-src.zip http://archive.apache.org/dist/maven/maven-4/4.0.0-alpha-2/source/apache-maven-4.0.0-alpha-2-src.tar.gz Latest stable release 2026-03-12 3.9.14 https://archive.apache.org/dist/maven/maven-3/3.9.14/binaries/apache-maven-3.9.14-bin.zip https://archive.apache.org/dist/maven/maven-3/3.9.14/binaries/apache-maven-3.9.14-bin.tar.gz https://archive.apache.org/dis...

			wantSelected: &inputSerialized[2],
			wantOk:       true,
		},
		{
			// inputSerialized[1] have older versions of the second in inputSerialized[2], but
			// since it is not strict, we should get it that one (with latest modtime)
			name:         "modtimemismatch,not strict",
			m:            metaCacheEntries{inputSerialized[1], inputSerialized[1], inputSerialized[2], inputSerialized[2]},

ここでは、アプリケーションのスタートアップイベントでテーブルを作成しています。

本番では、アプリを起動する前にマイグレーションスクリプトを実行するのが一般的でしょう。🤓

/// tip | 豆知識

SQLModel は Alembic をラップしたマイグレーションユーティリティを提供予定ですが、現時点では [Alembic](https://alembic.sqlalchemy.org/en/latest/) を直接使えます。

///

### Hero の作成 { #create-a-hero }

各 SQLModel モデルは Pydantic モデルでもあるため、Pydantic モデルと同じように型アノテーションで使えます。

例えば、`Hero` 型のパラメータを宣言すると、JSON ボディから読み込まれます。

		if getRequestAuthType(r) == authTypeAnonymous {
			// As per "Permission" section in
			// https://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectGET.html
			// If the object you request does not exist,
			// the error Amazon S3 returns depends on
			// whether you also have the s3:ListBucket
			// permission.