* `Field(primary_key=True)` indique à SQLModel que `id` est la **clé primaire** dans la base SQL (vous pouvez en savoir plus sur les clés primaires SQL dans la documentation SQLModel).

Dans ce cas, vous devez vous assurer que chaque operation ID est **unique** d’une autre manière.

Par exemple, vous pouvez vous assurer que chaque *chemin d'accès* a un tag, puis générer l’operation ID à partir du **tag** et du **nom** du *chemin d'accès* (le nom de la fonction).

### Fonction personnalisée de génération d’ID unique { #custom-generate-unique-id-function }

					Exprs: []clause.Expression{
						clause.NamedExpr{"?", []interface{}{clause.Column{Name: "id"}}},
						clause.NamedExpr{"?", []interface{}{clause.Column{Name: "name"}}},
						clause.NamedExpr{"LENGTH(?)", []interface{}{clause.Column{Name: "mobile"}}},
					},
				},
			}, clause.From{}},
			"SELECT `id`, `name`, LENGTH(`mobile`) FROM `users`", nil,
		},
		{
			[]clause.Interface{clause.Select{

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven-test</groupId>
  <artifactId>t05-a</artifactId>
  <packaging>jar</packaging>
  <version>1.0</version>
  <repositories>
    <repository>
      <id>central</id>
      <name>Fake Maven Central Repository</name>
      <url>file://dummy</url>
    </repository>
  </repositories>
  <dependencies>
    <dependency>
      <groupId>maven-test</groupId>

<div style="text-align: right; margin-right: 10%;">Timothy Crosley - <strong>Создатель [Hug](https://github.com/hugapi/hug)</strong> <a href="https://news.ycombinator.com/item?id=19455465"><small>(ref)</small></a></div>

---

"_Если вы хотите изучить один **современный фреймворк** для создания REST API, посмотрите **FastAPI** [...] Он быстрый, простой в использовании и лёгкий в изучении [...]_"

* `Field(primary_key=True)` сообщает SQLModel, что `id` — это **первичный ключ** в SQL базе данных (подробнее о первичных ключах SQL можно узнать в документации SQLModel).

Bu örnekte, bu bir `str`:

```Python
"{$callback_url}/invoices/{$request.body.id}"
```

Yani API'nizin kullanıcısı (external geliştirici) sizin API'nize şu adrese bir request gönderirse:

```
https://yourapi.com/invoices/?callback_url=https://www.external.org/events
```

ve JSON body şu şekilde olursa:

```JSON
{
    "id": "2expen51ve",
    "customer": "Mr. Richie Rich",
    "total": "9999"
}

labels.purgeSearchLogDay=刪除搜尋日誌
labels.query=查詢
labels.queryId=查詢ID
labels.rt=rt
labels.searchLog=搜尋日誌
labels.sort=排序
labels.start=開始位置
labels.loginRequired=需要登入
labels.loginLink=顯示登入連結
labels.threadName=執行緒名稱
labels.url=URL
labels.userFavorite=收藏日誌
labels.userInfo=使用者資訊
labels.webApiJson=JSON響應
labels.webConfigName=Web爬網配置名稱
labels.allLanguages=所有語言
labels.dictId=字典ID
labels.docId=文檔ID
labels.endTime=結束時間
labels.hq=hq

### Benzersiz ID Üreten Özel Fonksiyon { #custom-generate-unique-id-function }

FastAPI, her *path operation* için bir **unique ID** kullanır. Bu ID, **operation ID** için ve ayrıca request/response'lar için gerekebilecek özel model isimleri için de kullanılır.

<div style="text-align: right; margin-right: 10%;">Timothy Crosley - <strong>[Hug](https://github.com/hugapi/hug) creador</strong> <a href="https://news.ycombinator.com/item?id=19455465"><small>(ref)</small></a></div>

---

"_Si estás buscando aprender un **framework moderno** para construir APIs REST, échale un vistazo a **FastAPI** [...] Es rápido, fácil de usar y fácil de aprender [...]_"