And if you declared a `response_model`, it will still be used to filter and convert the object you returned.

**FastAPI** will use that *temporal* response to extract the headers (also cookies and status code), and will put them in the final response that contains the value you returned, filtered by any `response_model`.

org.apache.maven.internal.impl.model.DefaultModelPathTranslator
org.apache.maven.internal.impl.model.DefaultInheritanceAssembler
org.apache.maven.internal.impl.model.DefaultProfileSelector
org.apache.maven.internal.impl.model.DefaultProfileInjector
org.apache.maven.internal.impl.model.DefaultPluginManagementInjector
org.apache.maven.internal.impl.model.DefaultDependencyManagementInjector

import gradlebuild.binarycompatibility.isSynthetic
import gradlebuild.binarycompatibility.metadata.KotlinMetadataQueries
import japicmp.model.JApiClass
import japicmp.model.JApiCompatibility
import japicmp.model.JApiConstructor
import japicmp.model.JApiField
import japicmp.model.JApiMethod
import javassist.CtBehavior
import javassist.CtClass
import javassist.CtConstructor
import javassist.CtField
import javassist.CtMember

!!! info
    ✔️ 🤯 👈 🎻 💪 🚫 🌐 Pydantic 🏷 💪.

    , 👆 5️⃣📆 💪 ⚙️ Pydantic 🏷.

    ✋️ 🚥 👆 ✔️ 📚 🎻 🤥 🤭, 👉 👌 🎱 ⚙️ 👫 🏋️ 🕸 🛠️ ⚙️ FastAPI. 👶

## 🎻 `response_model`

👆 💪 ⚙️ `dataclasses` `response_model` 🔢:

```Python hl_lines="1  7-13  19"
{!../../../docs_src/dataclasses/tutorial002.py!}
```

🎻 🔜 🔁 🗜 Pydantic 🎻.

👉 🌌, 🚮 🔗 🔜 🎦 🆙 🛠️ 🩺 👩‍💻 🔢:

但你仍然希望能够使用`response_model`过滤和转换你返回的数据。

对于这些情况，你可以使用一个`Response`参数。

## 使用 `Response` 参数

你可以在你的*路径操作函数*中声明一个`Response`类型的参数（就像你可以为cookies和头部做的那样）。

然后你可以在这个*临时*响应对象中设置`status_code`。

```Python hl_lines="1  9  12"
{!../../../docs_src/response_change_status_code/tutorial001.py!}
```

然后你可以像平常一样返回任何你需要的对象（例如一个`dict`或者一个数据库模型）。如果你声明了一个`response_model`，它仍然会被用来过滤和转换你返回的对象。

import jetbrains.buildServer.configs.kotlin.failureConditions.BuildFailureOnText
import model.ALL_CROSS_VERSION_BUCKETS
import model.CIBuildModel
import model.DefaultFunctionalTestBucketProvider
import model.JsonBasedGradleSubprojectProvider
import model.QUICK_CROSS_VERSION_BUCKETS
import model.TestCoverage
import model.TestType
import model.ignoredSubprojects
import org.junit.jupiter.api.Assertions.assertEquals

# Return a Response Directly

When you create a **FastAPI** *path operation* you can normally return any data from it: a `dict`, a `list`, a Pydantic model, a database model, etc.

By default, **FastAPI** would automatically convert that return value to JSON using the `jsonable_encoder` explained in [JSON Compatible Encoder](../tutorial/encoder.md){.internal-link target=_blank}.

Like `item.model_dump(exclude_unset=True)`.

!!! info
    In Pydantic v1 the method was called `.dict()`, it was deprecated (but still supported) in Pydantic v2, and renamed to `.model_dump()`.

    The examples here use `.dict()` for compatibility with Pydantic v1, but you should use `.model_dump()` instead if you can use Pydantic v2.

import jetbrains.buildServer.configs.kotlin.triggers.vcs
import model.CIBuildModel
import model.StageName

class GitHubMergeQueueCheckPass(model: CIBuildModel) : BaseGradleBuildType(init = {
    id("${model.projectId}_GitHubMergeQueueCheckPass")
    uuid = "${DslContext.uuidPrefix}_${model.projectId}_GitHubMergeQueueCheckPass"
    name = "GitHub Merge Queue Check Pass"
    type = Type.COMPOSITE

package configurations

import model.CIBuildModel
import model.Stage

class SanityCheck(model: CIBuildModel, stage: Stage) : BaseGradleBuildType(stage = stage, init = {
    id(buildTypeId(model))
    name = "Sanity Check"
    description = "Static code analysis, checkstyle, release notes verification, etc."

    features {
        publishBuildStatusToGithub(model)
    }

    applyDefaults(
        model,
        this,