```json
{
    "detail": [
        {
            "type": "extra_forbidden",
            "loc": ["cookie", "santa_tracker"],
            "msg": "Extra inputs are not permitted",
            "input": "good-list-please",
        }
    ]
}
```

## まとめ { #summary }

```

クエリパラメータ `tool` が許可されていないことを伝える**エラー**レスポンスが返されます。

```json
{
    "detail": [
        {
            "type": "extra_forbidden",
            "loc": ["query", "tool"],
            "msg": "Extra inputs are not permitted",
            "input": "plumbus"
        }
    ]
}
```

## まとめ { #summary }

**FastAPI**では、**クエリパラメータ**を宣言するために、**Pydanticモデル**を使用できます。😎

/// tip | 豆知識

)

//go:generate msgp -file $GOFILE -unexported

// healingTracker is used to persist healing information during a heal.
type healingTracker struct {
	disk StorageAPI    `msg:"-"`
	mu   *sync.RWMutex `msg:"-"`

	ID         string
	PoolIndex  int
	SetIndex   int
	DiskIndex  int
	Path       string
	Endpoint   string
	Started    time.Time
	LastUpdate time.Time

	ObjectsTotalCount uint64

	s.Split(loopAtEOFSplit)
	// Expect a panic
	defer func() {
		err := recover()
		if err == nil {
			t.Fatal("should have panicked")
		}
		if msg, ok := err.(string); !ok || !strings.Contains(msg, "empty tokens") {
			panic(err)
		}
	}()
	for count := 0; s.Scan(); count++ {
		if count > 1000 {
			t.Fatal("looping")
		}
	}
	if s.Err() != nil {

</p>

<p>
There are subtler variants on this theme, such as this program.
</p>

<pre>
type T struct {
	msg string
}

var g *T

func setup() {
	t := new(T)
	t.msg = "hello, world"
	g = t
}

func main() {
	go setup()
	for g == nil {
	}
	print(g.msg)
}
</pre>

<p>
Even if <code>main</code> observes <code>g != nil</code> and exits its loop,

 log.Println("Connected")

 // Subscribe to subject
 log.Printf("Subscribing to subject 'bucketevents'\n")
 natsConnection.Subscribe("bucketevents", func(msg *nats.Msg) {

  // Handle the message
  log.Printf("Received message '%s\n", string(msg.Data)+"'")
 })

 // Keep the connection alive
 runtime.Goexit()
}
```

```
go run nats.go
2016/10/12 06:39:18 Connected

	ErrConfigGeneric | ErrConfigNotFound
}

// ErrConfigGeneric is a generic config type
type ErrConfigGeneric struct {
	msg string
}

func (ge *ErrConfigGeneric) setMsg(msg string) {
	ge.msg = msg
}

func (ge ErrConfigGeneric) Error() string {
	return ge.msg
}

// ErrConfigNotFound is an error to indicate
// that a config parameter is not found
type ErrConfigNotFound struct {
	ErrConfigGeneric

        public CommonServerMessageBlockResponse getResponse() {
            return this.response;
        }

        @Override
        public void setResponse(CommonServerMessageBlockResponse msg) {
            this.response = msg;
        }

        @Override
        public long getMid() {
            return this.mid;
        }

        @Override
        public void setMid(long mid) {

```json
{
    "detail": [
        {
            "type": "extra_forbidden",
            "loc": ["cookie", "santa_tracker"],
            "msg": "Extra inputs are not permitted",
            "input": "good-list-please",
        }
    ]
}
```

## 요약 { #summary }

...without adding the required parameter `needy`, you will see an error like:

```JSON
{
  "detail": [
    {
      "type": "missing",
      "loc": [
        "query",
        "needy"
      ],
      "msg": "Field required",
      "input": null
    }
  ]
}
```

As `needy` is a required parameter, you would need to set it in the URL:

```
http://127.0.0.1:8000/items/foo-item?needy=sooooneedy
```