# OpenAPI Webhooks { #openapi-webhooks }

There are cases where you want to tell your API **users** that your app could call *their* app (sending a request) with some data, normally to **notify** of some type of **event**.

This means that instead of the normal process of your users sending requests to your API, it's **your API** (or your app) that could **send requests to their system** (to their API, their app).

This is normally called a **webhook**.

 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

labels.searchlog_log_type_search_zeroclick=Zero Click Count
labels.searchlog_log_type_search_count_hour=Search Count/Hour
labels.searchlog_log_type_search_count_day=Search Count/Day
labels.searchlog_log_type_search_user_hour=User Count/Hour
labels.searchlog_log_type_search_user_day=User Count/Day
labels.searchlog_log_type_search_reqtimeavg_hour=Request Average Time/Hour
labels.searchlog_log_type_search_reqtimeavg_day=Request Average Time/Day

Pas la classe elle‑même (qui est déjà un callable), mais une instance de cette classe.

Pour cela, nous déclarons une méthode `__call__` :

{* ../../docs_src/dependencies/tutorial011_an_py310.py hl[12] *}

Dans ce cas, ce `__call__` est ce que **FastAPI** utilisera pour détecter des paramètres supplémentaires et des sous‑dépendances, et c’est ce qui sera appelé pour transmettre ensuite une valeur au paramètre dans votre *fonction de chemin d'accès*.

### Cache the OpenAPI schema { #cache-the-openapi-schema }

You can use the property `.openapi_schema` as a "cache", to store your generated schema.

That way, your application won't have to generate the schema every time a user opens your API docs.

It will be generated only once, and then the same cached schema will be used for the next requests.

Nous pouvons maintenant configurer l’application pour utiliser ces fichiers statiques pour les docs.

### Désactiver les docs automatiques pour les fichiers statiques { #disable-the-automatic-docs-for-static-files }

Comme lors de l’utilisation d’un CDN personnalisé, la première étape consiste à désactiver les docs automatiques, car elles utilisent un CDN par défaut.

The process that happens when your API app calls the *external API* is named a "callback". Because the software that the external developer wrote sends a request to your API and then your API *calls back*, sending a request to an *external API* (that was probably created by the same developer).

```
(You can paste links or attach files by dragging & dropping them below)
- Provide links to your updated versions of the above two colab notebooks.
- Provide links to your TensorFlow model and (optionally) TensorFlow Lite Model.
```

Par exemple, vous ne pouvez pas mettre un modèle Pydantic dans une `JSONResponse` sans d'abord le convertir en un `dict` avec tous les types de données (comme `datetime`, `UUID`, etc.) convertis en types compatibles JSON.

Pour ces cas, vous pouvez utiliser le `jsonable_encoder` pour convertir vos données avant de les passer à une réponse :

){this.highlightedUnit=null,this.updateFromElementVal()},clear:function(){this.hour="",this.minute="",this.second="",this.meridian="",this.$element.val("")},decrementHour:function(){if(this.showMeridian)if(1===this.hour)this.hour=12;else{if(12===this.hour)return this.hour--,this.toggleMeridian();if(0===this.hour)return this.hour=11,this.toggleMeridian();this.hour--}else this.hour<=0?this.hour=this.maxHours-1:this.hour--},decrementMinute:function(a){var b;b=a?this.minute-a:this.minute-this.minute...