Importieren Sie `Form` von `fastapi`:

{* ../../docs_src/request_forms/tutorial001_an_py39.py hl[3] *}

## `Form`-Parameter definieren { #define-form-parameters }

Erstellen Sie Formular-Parameter, so wie Sie es auch mit `Body` und `Query` machen würden:

{* ../../docs_src/request_forms/tutorial001_an_py39.py hl[9] *}

Then, we can change the dependency "dependable" `common_parameters` from above to the class `CommonQueryParams`:

{* ../../docs_src/dependencies/tutorial002_an_py310.py hl[11:15] *}

Pay attention to the `__init__` method used to create the instance of the class:

{* ../../docs_src/dependencies/tutorial002_an_py310.py hl[12] *}

...it has the same parameters as our previous `common_parameters`:

Então, podemos mudar o "injetável" na dependência `common_parameters` acima para a classe `CommonQueryParams`:

{* ../../docs_src/dependencies/tutorial002_an_py310.py hl[11:15] *}

Observe o método `__init__` usado para criar uma instância da classe:

{* ../../docs_src/dependencies/tutorial002_an_py310.py hl[12] *}

...ele possui os mesmos parâmetros que nosso `common_parameters` anterior:

In diesem Fall werden sie auf alle *Pfadoperationen* in der Anwendung angewendet:

{* ../../docs_src/dependencies/tutorial012_an_py39.py hl[17] *}

## `main.py` erstellen { #create-main-py }

Kopieren Sie das Beispiel in eine Datei `main.py`:

{* ../../docs_src/security/tutorial001_an_py39.py *}

## Ausführen { #run-it }

/// info | Info

* `age`

{* ../../docs_src/sql_databases/tutorial002_an_py310.py ln[7:9] hl[7:9] *}

#### `Hero` - *表模型*

接下来，我们创建 `Hero` ，实际的*表模型*，并添加那些不总是在其他模型中的**额外字段**：

* `id`
* `secret_name`

因为 `Hero` 继承自 HeroBase ，所以它**也**包含了在 `HeroBase` 中声明过的**字段**。因此 `Hero` 的所有字段为：

* `id`
* `name`
* `age`
* `secret_name`

{* ../../docs_src/sql_databases/tutorial002_an_py310.py ln[7:14] hl[12:14] *}

from fastapi.testclient import TestClient


@pytest.fixture(
    name="module",
    params=[
        "tutorial008_py39",
        # Fails with `NameError: name 'DepA' is not defined`
        pytest.param("tutorial008_an_py39", marks=pytest.mark.xfail),
    ],
)
def get_module(request: pytest.FixtureRequest):
    mod_name = f"docs_src.dependencies.{request.param}"
    mod = importlib.import_module(mod_name)
    return mod

@pytest.fixture(
    name="client",
    params=[
        pytest.param("tutorial001_py39"),
        pytest.param("tutorial001_py310", marks=needs_py310),
        pytest.param("tutorial001_an_py39"),
        pytest.param("tutorial001_an_py310", marks=needs_py310),
    ],
)
def get_client(request: pytest.FixtureRequest):
    mod = importlib.import_module(f"docs_src.custom_request_and_route.{request.param}")

In that case, they will be applied to all the *path operations* in the application:

{* ../../docs_src/dependencies/tutorial012_an_py39.py hl[17] *}

En ese caso, se aplicarán a todas las *path operations* en la aplicación:

{* ../../docs_src/dependencies/tutorial012_an_py39.py hl[17] *}