# `Request` class

You can declare a parameter in a *path operation function* or dependency to be of type `Request` and then you can access the raw request object directly, without any validation, etc.

You can import it directly from `fastapi`:

```python
from fastapi import Request
```

/// tip

        assertFalse(mp.isRequired(), "Expected " + mp + ".isRequired() to return false");
        assertEquals("parameter-description", mp.getDescription());
        assertEquals("deprecated-parameter", mp.getDeprecated());
        assertEquals("${jar.finalName}", mp.getExpression());
        assertEquals("${project.build.finalName}", mp.getDefaultValue());

This doesn't go inside of each JSON Schema contained in OpenAPI, this goes outside, in the *path operation* directly.

### Using the `openapi_examples` Parameter { #using-the-openapi-examples-parameter }

You can declare the OpenAPI-specific `examples` in FastAPI with the parameter `openapi_examples` for:

* `Path()`
* `Query()`
* `Header()`
* `Cookie()`
* `Body()`
* `Form()`
* `File()`

E.g.:

* To pass a *path* or *query* parameter, add it to the URL itself.
* To pass a JSON body, pass a Python object (e.g. a `dict`) to the parameter `json`.
* If you need to send *Form Data* instead of JSON, use the `data` parameter instead.
* To pass *headers*, use a `dict` in the `headers` parameter.
* For *cookies*, a `dict` in the `cookies` parameter.

    private void extractParameters(MethodDeclaration n, MethodMetaData method) {
        for (Parameter parameter : n.getParameters()) {
            TypeMetaData typeMetaData = extractTypeName(parameter.getType());
            if (parameter.isVarArgs()) {
                typeMetaData.setVarargs();
            }
            method.addParameter(parameter.getNameAsString(), typeMetaData);
        }
    }

    @Override

* `@app.get()`
* `@app.post()`
* `@app.put()`
* `@app.delete()`
* usw.

{* ../../docs_src/response_status_code/tutorial001_py39.py hl[6] *}

/// note | Hinweis

      <version>1.0.0</version>
      <name>ExpressionDocumentation</name>
      <description>The root of a parameter plugin expression document.</description>
      <fields>
        <field>
          <version>1.0.0</version>
          <name>expressions</name>
          <description>The list of plugin parameter expressions described by this
            document.</description>
          <association>

Oder die Abhängigkeit gibt keinen Wert zurück.

Aber Sie müssen sie trotzdem ausführen/auflösen.

In diesen Fällen können Sie, anstatt einen Parameter der *Pfadoperation-Funktion* mit `Depends` zu deklarieren, eine `list`e von `dependencies` zum *Pfadoperation-Dekorator* hinzufügen.

When defining WebSockets, you normally declare a parameter of type `WebSocket` and with it you can read data from the client and send data to it.

It is provided directly by Starlette, but you can import it from `fastapi`:

```python
from fastapi import WebSocket
```

/// tip

## Zusätzliche Response mit `model` { #additional-response-with-model }

Sie können Ihren *Pfadoperation-Dekoratoren* einen Parameter `responses` übergeben.