a: str | None = "foo"


class Model(BaseModel):
    x: int | None = None
    sub: SubModel


class ModelSubclass(Model):
    y: int
    z: int = 0
    w: int | None = None


class ModelDefaults(BaseModel):
    w: str | None = None
    x: str | None = None
    y: str = "y"
    z: str = "z"


@app.get("/", response_model=Model, response_model_exclude_unset=True)

		{Name: "ID", DBName: "id", BindNames: []string{"Model", "ID"}, DataType: schema.Uint, PrimaryKey: true, Tag: `gorm:"primarykey"`, TagSettings: map[string]string{"PRIMARYKEY": "PRIMARYKEY"}, Size: 64, HasDefaultValue: true, AutoIncrement: true},
		{Name: "CreatedAt", DBName: "created_at", BindNames: []string{"Model", "CreatedAt"}, DataType: schema.Time},
		{Name: "UpdatedAt", DBName: "updated_at", BindNames: []string{"Model", "UpdatedAt"}, DataType: schema.Time},

  <artifactId>child-artifact-id</artifactId>
  <version>11-SNAPSHOT</version>
  <name>Model inheritance test parent: module directory != artifactId</name>
  <description>
    artifactId == "child-artifact-id"
    but expect path on SCM and site == "child"
    feature: support "project.directory" property, ressembling future model addition of "directory" element along "artifactId"
  </description>

import gradlebuild.binarycompatibility.jApiClass
import gradlebuild.binarycompatibility.simpleName
import japicmp.model.JApiClass
import japicmp.model.JApiCompatibility
import japicmp.model.JApiConstructor
import japicmp.model.JApiField
import japicmp.model.JApiMethod


private
typealias PredicateVisitor = GenericVisitorAdapter<Boolean, Unit?>

private

  <modules>
    <module>maven-plugin-api</module>
    <module>maven-builder-support</module>
    <module>maven-model</module>
    <module>maven-model-builder</module>
    <module>maven-settings</module>
    <module>maven-settings-builder</module>
    <module>maven-artifact</module>
    <module>maven-resolver-provider</module>
    <module>maven-repository-metadata</module>
    <module>maven-embedder</module>

    public void transform(MavenProject project, RepositorySystemSession session, ModelSource src, Path tgt)
            throws ModelBuilderException, XMLStreamException, IOException {
        Model model = builder.build(session, project, src);
        write(model, tgt);
    }

    private void deferDeleteFile(Path generatedFile) {
        toDelete.add(generatedFile.toAbsolutePath());
    }

    @PreDestroy

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

## Как работает модель ответа { #how-a-response-model-works }

Когда вы объявляете [Модель ответа - возвращаемый тип](../tutorial/response-model.md) в операции пути, **FastAPI** будет использовать её для сериализации данных в JSON с помощью Pydantic.

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

import gradlebuild.binarycompatibility.rules.SinceAnnotationRule
import japicmp.model.JApiAnnotation
import japicmp.model.JApiClass
import japicmp.model.JApiCompatibility
import japicmp.model.JApiConstructor
import japicmp.model.JApiField
import japicmp.model.JApiMethod
import japicmp.model.JApiParameter
import me.champeau.gradle.japicmp.report.AbstractContextAwareViolationRule

[XML](https://en.wikipedia.org/wiki/XML)レスポンスを返したいとしましょう。

XMLを文字列にし、`Response` に含め、それを返します。

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

## Response Model の仕組み { #how-a-response-model-works }

path operation で [Response Model - 戻り値の型](../tutorial/response-model.md) を宣言すると、**FastAPI** はそれを使って Pydantic によりデータをJSONにシリアライズします。

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

Beachten Sie, dass die *Pfadoperationen* die Modelle definieren, die sie für die <abbr title="Request – Anfrage: Daten, die der Client zum Server sendet">Request</abbr>- und <abbr title="Response – Antwort: Daten, die der Server zum anfragenden Client zurücksendet">Response</abbr>-<abbr title="Die eigentlichen Nutzdaten, abzüglich der Metadaten">Payload</abbr> verwenden, indem sie die Modelle `Item` und `ResponseMessage` verwenden.