from fastapi import FastAPI, Header
from pydantic import BaseModel
from typing_extensions import Annotated

app = FastAPI()


class CommonHeaders(BaseModel):
    model_config = {"extra": "forbid"}

    host: str
    save_data: bool
    if_modified_since: Union[str, None] = None
    traceparent: Union[str, None] = None
    x_tag: List[str] = []


@app.get("/items/")

from fastapi import FastAPI, Query
from pydantic import BaseModel, Field
from typing_extensions import Literal

app = FastAPI()


class FilterParams(BaseModel):
    model_config = {"extra": "forbid"}

    limit: int = Field(100, gt=0, le=100)
    offset: int = Field(0, ge=0)
    order_by: Literal["created_at", "updated_at"] = "created_at"
    tags: list[str] = []


@app.get("/items/")

from typing import List

from fastapi import FastAPI, Query
from pydantic import BaseModel, Field
from typing_extensions import Literal

app = FastAPI()


class FilterParams(BaseModel):
    model_config = {"extra": "forbid"}

    limit: int = Field(100, gt=0, le=100)
    offset: int = Field(0, ge=0)
    order_by: Literal["created_at", "updated_at"] = "created_at"
    tags: List[str] = []


@app.get("/items/")

Em alguns casos de uso especiais (provavelmente não muito comuns), você pode querer **restringir** os cabeçalhos que você quer receber.

Você pode usar a configuração dos modelos do Pydantic para proibir (`forbid`) quaisquer campos `extra`:

//// tab | Python 3.10+

```Python hl_lines="10"
{!> ../../docs_src/header_param_models/tutorial002_an_py310.py!}
```

////

//// tab | Python 3.9+

## Restrinja Parâmetros de Consulta Extras

Em alguns casos especiais (provavelmente não muito comuns), você queira **restrinjir** os parâmetros de consulta que deseja receber.

Você pode usar a configuração do modelo Pydantic para `forbid` (proibir) qualquer campo `extra`:

//// tab | Python 3.10+

```Python hl_lines="10"
{!> ../../docs_src/query_param_models/tutorial002_an_py310.py!}
```

////

//// tab | Python 3.9+

                  ],
                  "principals": [
                   {
                    "and_ids": {
                     "ids": [
                      {
                       "or_ids": {
                        "ids": [
                         {
                          "filter_state": {
                           "key": "io.istio.peer_principal",
                           "string_match": {

        HTTP_BAD_METHOD,
        HTTP_GONE,
        HTTP_REQ_TOO_LONG,
        HTTP_NOT_IMPLEMENTED,
        HTTP_PERM_REDIRECT,
        -> {
          // These codes can be cached unless headers forbid it.
        }

        HTTP_MOVED_TEMP,
        HTTP_TEMP_REDIRECT,
        -> {
          // These codes can only be cached with the right response headers.

	CALL (AX)(PC*1)                 // ERROR "invalid instruction"
	CALL (AX)(SB*1)                 // ERROR "invalid instruction"
	CALL (AX)(FP*1)                 // ERROR "invalid instruction"
	// Forbid memory operands for MOV CR/DR. See #24981.
	MOVQ CR0, (AX)                  // ERROR "invalid instruction"
	MOVQ CR2, (AX)                  // ERROR "invalid instruction"

    private static final Map<String, DependencyScope> IDS = Collections.unmodifiableMap(
            Stream.of(DependencyScope.values()).collect(Collectors.toMap(s -> s.id, s -> s)));

    public static DependencyScope forId(String id) {
        return IDS.get(id);
    }

    private final String id;
    private final boolean transitive;

    DependencyScope(String id, boolean transitive) {
        this.id = id;

  When you convey a covered work, you waive any legal power to forbid
circumvention of technological measures to the extent such circumvention
is effected by exercising rights under this License with respect to
the covered work, and you disclaim any intention to limit operation or
modification of the work as a means of enforcing, against the work's
users, your or third parties' legal rights to forbid circumvention of
technological measures.