Feel free to skip this.

    Peewee is not recommended with FastAPI as it doesn't play well with anything async Python. There are several better alternatives.

!!! info
    These docs assume Pydantic v1.

    Because Pewee doesn't play well with anything async and there are better alternatives, I won't update these docs for Pydantic v2, they are kept for now only for historical purposes.

### Is concurrency better than parallelism?

Nope! That's not the moral of the story.

Concurrency is different than parallelism. And it is better on **specific** scenarios that involve a lot of waiting. Because of that, it generally is a lot better than parallelism for web application development. But not for everything.

```json
{"message": "Hello World"}
```

...this response will return:

```json
{
  "message": "Hello World"
}
```

Of course, you will probably find much better ways to take advantage of this than formatting JSON. 😉

## Default response class

When creating a **FastAPI** class instance or an `APIRouter` you can specify which response class to use by default.

* Diğer ekstra özellikler (Starlette sayesinde):
    * **WebSocketler**
    * HTTPX ve `pytest` sayesinde aşırı kolay testler.
    * **CORS**
    * **Cookie Sessions**
    * ...ve daha fazlası.

## Performans

...although in this example we are only creating and reading.

### Read data

Import `Session` from `sqlalchemy.orm`, this will allow you to declare the type of the `db` parameters and have better type checks and completion in your functions.

Import `models` (the SQLAlchemy models) and `schemas` (the Pydantic *models* / schemas).

Create utility functions to:

* Read a single user by ID and by email.

### Test edildi

* 100% <abbr title="Kodun ne kadarının test edildiği">test coverage</abbr>.
* 100% <abbr title="Python type annotations, with this your editor and external tools can give you better support">typeları belirtilmiş</abbr> codebase.
* FastAPI ile yapılan bir çok proje insanlar tarafından kullanılıyor.

## Starlette özellikleri

And we know that editors can't provide a lot of support (like completion) for `dict`s, because they can't know their keys and value types.

We can do better...

## What makes a dependency

Up to now you have seen dependencies declared as functions.

But that's not the only way to declare dependencies (although it would probably be the more common).

```

📥 👥 ✅ 🚥 🔢 👈 ➖ 🔐 (✅ `.items` `some_user.items`) 👐 `peewee.ModelSelect`.

& 🚥 👈 💼, 📨 `list` ⏮️ ⚫️.

& ⤴️ 👥 ⚙️ ⚫️ Pydantic *🏷* / 🔗 👈 ⚙️ `orm_mode = True`, ⏮️ 📳 🔢 `getter_dict = PeeweeGetterDict`.

!!! tip
    👥 🕴 💪 ✍ 1️⃣ `PeeweeGetterDict` 🎓, & 👥 💪 ⚙️ ⚫️ 🌐 Pydantic *🏷* / 🔗.

## 💩 🇨🇻

🔜 ➡️ 👀 📁 `sql_app/crud.py`.

### ✍ 🌐 💩 🇨🇻

!!! warning
    There's a high chance that you **don't** need this base image or any other similar one, and would be better off by building the image from scratch as [described above in: Build a Docker Image for FastAPI](#build-a-docker-image-for-fastapi).