# Templates

Sie können jede gewünschte Template-Engine mit **FastAPI** verwenden.

Eine häufige Wahl ist Jinja2, dasselbe, was auch von Flask und anderen Tools verwendet wird.

Es gibt Werkzeuge zur einfachen Konfiguration, die Sie direkt in Ihrer **FastAPI**-Anwendung verwenden können (bereitgestellt von Starlette).

## Abhängigkeiten installieren

Installieren Sie `jinja2`:

<div class="termy">

```console
$ pip install jinja2

    when {
      logger.isLoggable(Level.FINE) -> Throwable(closer) // These are expensive to allocate.
      else -> null
    }

  open fun logCloseableLeak(
    message: String,
    stackTrace: Any?,
  ) {
    var logMessage = message
    if (stackTrace == null) {
      logMessage += " To see where this was allocated, set the OkHttpClient logger level to " +

    img: https://fastapi.tiangolo.com/img/sponsors/stainless.png
  - url: https://www.permit.io/blog/implement-authorization-in-fastapi?utm_source=github&utm_medium=referral&utm_campaign=fastapi
    title: Fine-Grained Authorization for FastAPI
    img: https://fastapi.tiangolo.com/img/sponsors/permit.png
  - url: https://www.interviewpal.com/?utm_source=fastapi&utm_medium=open-source&utm_campaign=dev-hiring

Sie größere Anwendungen strukturieren ([Bigger Applications - Multiple Files](../../tutorial/bigger-applications.md){.internal-link target=_blank}), möglicherweise mit mehreren Dateien, lernen Sie, wie Sie einen einzelnen `dependencies`-Parameter für eine Gruppe von *Pfadoperationen* deklarieren....

<img src="/img/tutorial/path-params/image01.png">

/// info

À nouveau, en utilisant uniquement les déclarations de type Python, **FastAPI** vous fournit automatiquement une documentation interactive (via Swagger UI).

On voit bien dans la documentation que `item_id` est déclaré comme entier.

///

## Les avantages d'avoir une documentation basée sur une norme, et la documentation alternative.

#          $$foreignAlias$$.VALID_BEGIN_DATE <= /*targetDate(Date)*/null
#      and $$foreignAlias$$.VALID_END_DATE >= /*targetDate(Date)*/null 
#         ; fixedSuffix = AsValid
#     }
# }
#
# *The line that starts with '#' means comment-out.
#
map:{
    #; FK_MEMBER_MEMBER_STATUS_CODE = map:{
    #    ; localTableName  = MEMBER             ; foreignTableName  = MEMBER_STATUS

		Value:  ":" + GlobalMinioDefaultPort,
		Usage:  "bind to a specific ADDRESS:PORT, ADDRESS can be an IP or hostname",
		EnvVar: "MINIO_ADDRESS",
	},
	cli.IntFlag{
		Name:   "listeners", // Deprecated Oct 2022
		Value:  1,
		Usage:  "bind N number of listeners per ADDRESS:PORT",
		EnvVar: "MINIO_LISTENERS",
		Hidden: true,
	},
	cli.StringFlag{
		Name:   "console-address",

        logStream.println();
        logStream.println("line");
        logStream.printf("formatted %d%n", 42);
        logStream.flush();

        String output = testOutput.toString();
        assertTrue(output.contains("test"));
        assertTrue(output.contains("123"));
        assertTrue(output.contains("true"));
        assertTrue(output.contains("line"));
        assertTrue(output.contains("formatted 42"));
    }

# 
# Example:
# map:{
#     ; PURCHASE     = SEQ_PURCHASE
#     ; MEMBER       = SEQ_MEMBER
#     ; MEMBER_LOGIN = SEQ_MEMBER_LOGIN
#     ; PRODUCT      = SEQ_PRODUCT
# }
#
# *The line that starts with '#' means comment-out.
#
map:{
    #; PURCHASE     = SEQ_PURCHASE
    #; MEMBER       = SEQ_MEMBER
    #; MEMBER_LOGIN = SEQ_MEMBER_LOGIN
    #; PRODUCT      = SEQ_PRODUCT
}

            throw new IORuntimeException(e);
        }
    }

    /**
     * Reads a single line from the given {@link BufferedReader}.
     *
     * @param reader
     *            the {@link BufferedReader} (must not be {@literal null})
     * @return a line of text, or {@literal null} if the end of the stream has been reached
     * @see BufferedReader#readLine()
     */