{* ../../docs_src/response_directly/tutorial002_py310.py hl[1,18] *}

## Cómo funciona un Response Model { #how-a-response-model-works }

Cuando declaras un [Response Model - Return Type](../tutorial/response-model.md) en una *path operation*, **FastAPI** lo usará para serializar los datos a JSON, usando Pydantic.

{* ../../docs_src/response_model/tutorial001_01_py310.py hl[16,21] *}

import gradlebuild.binarycompatibility.sources.SinceTagStatus;
import japicmp.model.JApiClass;
import japicmp.model.JApiCompatibility;
import japicmp.model.JApiConstructor;
import japicmp.model.JApiField;
import japicmp.model.JApiHasAnnotations;
import japicmp.model.JApiMethod;
import me.champeau.gradle.japicmp.report.Violation;

import java.util.Map;

import static japicmp.model.JApiCompatibilityChangeType.METHOD_ADDED_TO_INTERFACE;
import static japicmp.model.JApiCompatibilityChangeType.METHOD_ADDED_TO_PUBLIC_CLASS;
import static japicmp.model.JApiCompatibilityChangeType.METHOD_NEW_DEFAULT;
import static japicmp.model.JApiCompatibilityChangeType.METHOD_REMOVED;
import static japicmp.model.JApiCompatibilityChangeType.METHOD_RETURN_TYPE_CHANGED;

import com.google.common.collect.ImmutableList;
import japicmp.model.JApiClass;
import japicmp.model.JApiCompatibility;
import japicmp.model.JApiCompatibilityChange;
import japicmp.model.JApiCompatibilityChangeType;
import japicmp.model.JApiConstructor;
import japicmp.model.JApiHasAnnotations;
import japicmp.model.JApiImplementedInterface;
import me.champeau.gradle.japicmp.report.Violation;

Döndürmeniz gerekenden daha fazla veri döndürmediğinizden emin olmak için, [Tutorial - Response Model - Return Type](../tutorial/response-model.md) dokümantasyonunu okuyun.

## Response Performansını Optimize Etme - Response Model - Return Type { #optimize-response-performance-response-model-return-type }

Aynı teknik `Query`, `Cookie` ve `Header` için de geçerlidir. 😎

///

## Pydantic Model ile Cookies { #cookies-with-a-pydantic-model }

İhtiyacınız olan **cookie** parametrelerini bir **Pydantic model** içinde tanımlayın ve ardından parametreyi `Cookie` olarak bildirin:

{* ../../docs_src/cookie_param_models/tutorial001_an_py310.py hl[9:12,16] *}

/// warning | Uyarı

`Field`'ın, diğerlerinin (`Query`, `Path`, `Body` vb.) aksine `fastapi`'den değil doğrudan `pydantic`'den import edildiğine dikkat edin.

///

## Model attribute'larını tanımlayın { #declare-model-attributes }

Ardından `Field`'ı model attribute'larıyla birlikte kullanabilirsiniz:

{* ../../docs_src/body_fields/tutorial001_an_py310.py hl[11:14] *}

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

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import java.io.File;

import org.apache.maven.model.Activation;
import org.apache.maven.model.ActivationFile;
import org.apache.maven.model.Profile;
import org.apache.maven.model.building.ModelProblem.Severity;

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

import javax.inject.Named;
import javax.inject.Singleton;

import java.util.Objects;
import java.util.Optional;

import org.apache.maven.api.model.Activation;
import org.apache.maven.api.model.Profile;
import org.apache.maven.model.building.ModelProblemCollector;
import org.apache.maven.model.profile.ProfileActivationContext;

/**

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

import org.apache.maven.model.Dependency;
import org.apache.maven.model.Parent;
import org.apache.maven.model.Repository;
import org.apache.maven.model.resolution.InvalidRepositoryException;
import org.apache.maven.model.resolution.ModelResolver;
import org.apache.maven.model.resolution.UnresolvableModelException;
import org.junit.jupiter.api.Test;