<img src="/img/tutorial/header-param-models/image01.png">
</div>

## Proibindo Cabeçalhos adicionais { #forbid-extra-headers }

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`:

{* ../../docs_src/header_param_models/tutorial002_an_py310.py hl[10] *}

    #     Table names for display, e.g. on documents, are forcedly treated as upper case.
    #
    #; isTableDispNameUpperCase = false
    # - - - - - - - - - -/

    # /- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    # o isTableSqlNameUpperCase: (NotRequired - Default false)
    #   [true]
    #     Table names on SQL executed by condition-bean or behavior
    #     are forcedly treated as upper case. (except outside-SQL)
    #

* In order to bypass graceful deletion of pods (to immediately remove the pod from the API) the user must now provide the `--force` flag in addition to `--grace-period=0`.  This prevents users from accidentally force deleting pods without being aware of the consequences of force deletion.  Force deleting pods for resources like StatefulSets can result in multiple pods with the same name having running processes in the cluster, which may lead to data corruption...

Вы можете проверить это в интерфейсе документации по адресу `/docs`:

<div class="screenshot">
<img src="/img/tutorial/request-form-models/image01.png">
</div>

## Запрет дополнительных полей формы { #forbid-extra-form-fields }

В некоторых случаях (не особо часто встречающихся) вам может понадобиться **ограничить** поля формы только теми, которые объявлены в Pydantic-модели. И **запретить** любые **дополнительные** поля.

<img src="/img/tutorial/query-param-models/image01.png">
</div>

## Prohibir Parámetros Query Extras { #forbid-extra-query-parameters }

En algunos casos de uso especiales (probablemente no muy comunes), podrías querer **restringir** los parámetros query que deseas recibir.

Puedes usar la configuración del modelo de Pydantic para `forbid` cualquier campo `extra`:

{* ../../docs_src/query_param_models/tutorial002_an_py310.py hl[10] *}

 *
 * @author Kevin Bourrillion
 * @author Jesse Wilson
 * @author Austin Appleby
 */
@GwtCompatible
final class Hashing {
  private Hashing() {}

  /*
   * These should be ints, but we need to use longs to force GWT to do the multiplications with
   * enough precision.
   */
  private static final long C1 = 0xcc9e2d51;
  private static final long C2 = 0x1b873593;

  /*

        // Assert
        assertEquals(expectedCredits, credits);
        verify(negotiationResponse).getInitialCredits();
    }

    @Test
    @DisplayName("Test canReuse returns true with force signing")
    void testCanReuseWithForceSigning() {
        // Arrange
        when(negotiationResponse.canReuse(cifsContext, true)).thenReturn(true);

        // Act

 * under the License.
 */
package org.apache.maven.model.io;

import java.io.IOException;

/**
 * Signals a failure to parse the POM due to invalid syntax (e.g. non well-formed XML or unknown elements).
 *
 * @deprecated use {@code org.apache.maven.api.services.xml.ModelXmlFactory} instead
 */
@Deprecated(since = "4.0.0")
public class ModelParseException extends IOException {

    /**

 * under the License.
 */
package org.apache.maven.settings.io;

import java.io.IOException;

/**
 * Signals a failure to parse the settings due to invalid syntax (e.g. non well-formed XML or unknown elements).
 *
 * @deprecated since 4.0.0, use {@link org.apache.maven.api.services.xml.SettingsXmlFactory} instead
 */
@Deprecated(since = "4.0.0")
public class SettingsParseException extends IOException {

from typing import Annotated, Literal

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

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/")