クエリパラメータの宣言と同様に、モデル属性がデフォルト値を持つ場合は必須ではありません。そうでなければ必須です。単にオプションにするには `None` を使用してください。

例えば、上記のモデルは次のようなJSON「`object`」（またはPythonの `dict`）を宣言します:

```JSON
{
    "name": "Foo",
    "description": "An optional description",
    "price": 45.2,
    "tax": 3.5
}
```

...`description` と `tax` はオプション（デフォルト値が `None`）なので、このJSON「`object`」も有効です:

```JSON
{
    "name": "Foo",
    "price": 45.2
}
```

* `tags: List[str] = []` için default, boş bir list’tir: `[]`.

Ancak gerçekte kaydedilmedilerse, bunları sonuçtan çıkarmak isteyebilirsiniz.

Örneğin NoSQL veritabanında çok sayıda optional attribute içeren modelleriniz varsa, default değerlerle dolu çok uzun JSON response’ları göndermek istemeyebilirsiniz.

### `response_model_exclude_unset` parametresini kullanın { #use-the-response-model-exclude-unset-parameter }

import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.bhv.readable.CBCall;
import org.dbflute.cbean.result.ListResultBean;
import org.dbflute.optional.OptionalEntity;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;
import org.opensearch.index.query.QueryBuilder;
import org.opensearch.search.sort.FieldSortBuilder;

これは **FastAPI** の制限ではなく、HTTP プロトコルの仕様です。

///

## 任意のファイルアップロード { #optional-file-upload }

標準の型アノテーションを使い、デフォルト値を `None` に設定することで、ファイルを任意にできます:

{* ../../docs_src/request_files/tutorial001_02_an_py310.py hl[9,17] *}

## 追加メタデータつきの `UploadFile` { #uploadfile-with-additional-metadata }

"minio.fullname" . -}} {{- end -}} {{- end -}} {{/* Determine name for scc role and rolebinding */}} {{- define "minio.sccRoleName" -}} {{- printf "%s-%s" "scc" (include "minio.fullname" .) | trunc 63 | trimSuffix "-" -}} {{- end -}} {{/* Properly format optional additional arguments to MinIO binary */}} {{- define "minio.extraArgs" -}} {{- range .Values.extraArgs -}} {{ " " }}{{ . }} {{- end -}} {{- end -}} {{/* Return the proper Docker Image Registry Secret Names */}} {{- define "minio.imagePullSecrets"...

import org.codelibs.fess.rank.fusion.SearchResult.SearchResultBuilder;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.QueryResponseList;
import org.dbflute.optional.OptionalThing;
import org.junit.jupiter.api.Test;

public class RankFusionProcessorTest extends UnitFessTestCase {

    private static final String ID_FIELD = "_id";

    @Test

#### Storage

* [stable] Mount options

  * The ability to specify mount options for volumes is moved from beta to stable.

  * A new `MountOptions` field in the `PersistentVolume` spec is available to specify mount options. This field replaces an annotation.

  * A new `MountOptions` field in the `StorageClass` spec allows configuration of mount options for dynamically provisioned volumes.

*   You can now add "options" to the host's /etc/resolv.conf (or --resolv-conf), and they will be copied into pod's resolv.conf when dnsPolicy is Default. Being able to customize options is important because it is common to leverage options to fine-tune the behavior of DNS client. ([#54773](https://github.com/kubernetes/kubernetes/pull/54773),[ @phsiao](https://github.com/phsiao))...

            public BulkResponse addAll(final String index, final List<Map<String, Object>> docList,
                    final BiConsumer<Map<String, Object>, IndexRequestBuilder> options) {
                sentIndex.set(index);
                docList.forEach(x -> options.accept(x, new IndexRequestBuilder(this, IndexAction.INSTANCE)));
                sentDocList.addAll(docList);

Das `HeroUpdate`-*Datenmodell* ist etwas Besonderes, es hat **die selben Felder**, die benötigt werden, um einen neuen Helden zu erstellen, aber alle Felder sind **optional** (sie haben alle einen Defaultwert). Auf diese Weise, wenn Sie einen Helden aktualisieren, können Sie nur die Felder senden, die Sie aktualisieren möchten.