* Take a username.
* Generate a document ID from it.
* Get the document with that ID.
* Put the contents of the document in a `UserInDB` model.

from fastapi import APIRouter

router = APIRouter()


@router.post("/")
async def update_admin():

from fastapi import APIRouter

router = APIRouter()


@router.post("/")
async def update_admin():

from fastapi import APIRouter

router = APIRouter()


@router.post("/")
async def update_admin():

  deta [command]

Available Commands:
  auth        Change auth settings for a deta micro

...
```

</div>

!!! tip "提示"

    安装 CLI 遇到问题时，请参阅 <a href="https://docs.deta.sh/docs/micros/getting_started?ref=fastapi" class="external-link" target="_blank">Deta 官档</a>。

## 使用 CLI 登录

现在，使用 CLI 登录 Deta：

<div class="termy">

```console
$ deta login

The exception handler will receive a `Request` and the exception.

```Python hl_lines="2  14-16"
{!../../../docs_src/handling_errors/tutorial004.py!}
```

Now, if you go to `/items/foo`, instead of getting the default JSON error with:

```JSON
{
    "detail": [
        {
            "loc": [
                "path",
                "item_id"
            ],