# Body - Campos { #body-fields }

De la misma manera que puedes declarar validaciones adicionales y metadatos en los parámetros de las *path operation function* con `Query`, `Path` y `Body`, puedes declarar validaciones y metadatos dentro de los modelos de Pydantic usando `Field` de Pydantic.

## Importar `Field` { #import-field }

Primero, tienes que importarlo:

{* ../../docs_src/body_fields/tutorial001_an_py310.py hl[4] *}

/// warning | Advertencia

        assertEquals("Singleton context is already initialized", e.getMessage());
    }

    @Test
    void testInitLoadsJcifsPropertiesFile(@TempDir Path tempDir) throws IOException, CIFSException {
        // Test that jcifs.properties file is loaded
        Path jcifsPropertiesPath = tempDir.resolve("jcifs.properties");
        Files.writeString(jcifsPropertiesPath, "jcifs.smb.client.nativeOs=FileOS");

    }

    // Happy path: handleDFSReferral returns a resolved path
    @Test
    @DisplayName("handleDFSReferral returns resolved UNC path as stubbed")
    void handleDfsReferralValidInputs() {
        // Edge-like Windows UNC-style: a single backslash in the path
        String reqPath = "\\";
        String resolved = "smb://server/share/path";

    route: APIRoute = request.scope["route"]
    return {"user_id": user_id, "path": route.path}


@app.websocket("/items/{item_id}")
async def websocket_item(item_id: str, websocket: WebSocket):
    route: APIWebSocketRoute = websocket.scope["route"]
    await websocket.accept()
    await websocket.send_json({"item_id": item_id, "path": route.path})


client = TestClient(app)


def test_get():

## `Request` nesnesini doğrudan kullanın { #use-the-request-object-directly }

*Path operation function* içinde client'ın IP adresini/host'unu almak istediğinizi düşünelim.

Bunun için request'e doğrudan erişmeniz gerekir.

{* ../../docs_src/using_request_directly/tutorial001_py310.py hl[1,7:8] *}

          args: >
            --no-progress --offline '**/*.md' --include-fragments
            --exclude-path 'platforms/documentation/docs/src/docs/release/notes.md'
            --exclude-path 'platforms/documentation/docs/src/docs/release/notes-template.md'
            --exclude-path 'platforms/documentation/docs/src/docs/kotlin/Module.md'

{
    "properties": {
      "name": {
        "type": "keyword"
      },
      "paths": {
        "type": "keyword"
      },
      "includedPaths": {
        "type": "keyword"
      },
      "excludedPaths": {
        "type": "keyword"
      },
      "includedDocPaths": {
        "type": "keyword"
      },
      "excludedDocPaths": {
        "type": "keyword"
      },
      "configParameter": {

Hatta bu binlerce *path operation* 3 satır kadar kısa olabilir:

{* ../../docs_src/security/tutorial002_an_py310.py hl[30:32] *}

## Özet { #recap }

Artık *path operation function* içinde mevcut kullanıcıyı doğrudan alabilirsiniz.

Yolun yarısına geldik.

Kullanıcının/istemcinin gerçekten `username` ve `password` göndermesini sağlayacak bir *path operation* eklememiz gerekiyor.

```

...eso es porque el generador del cliente usa el **operation ID** interno de OpenAPI para cada *path operation*.

OpenAPI requiere que cada operation ID sea único a través de todas las *path operations*, por lo que FastAPI usa el **nombre de la función**, el **path**, y el **método/operación HTTP** para generar ese operation ID, porque de esa manera puede asegurarse de que los operation IDs sean únicos.

import biz.aQute.resolve.Bndrun
import java.io.File
import okio.FileSystem
import okio.Path
import okio.Path.Companion.toPath
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Tag
import org.junit.jupiter.api.Test

@Tag("Slow")
class OsgiTest {
  private lateinit var testResourceDir: Path
  private lateinit var workspaceDir: Path

  @BeforeEach
  fun setUp() {