Depends - Code Search

docs/en/docs/tutorial/dependencies/dependencies-in-path-operation-decorators.md

For those cases, instead of declaring a *path operation function* parameter with `Depends`, you can add a `list` of `dependencies` to the *path operation decorator*.

## Add `dependencies` to the *path operation decorator* { #add-dependencies-to-the-path-operation-decorator }

The *path operation decorator* receives an optional argument `dependencies`.

It should be a `list` of `Depends()`:

{* ../../docs_src/dependencies/tutorial006_an_py39.py hl[19] *}

Created: Sun Dec 28 07:19:09 GMT 2025

- Last Modified: Sun Aug 31 09:15:41 GMT 2025

- 2.9K bytes

- Click Count (0)

github.com/tiangolo/fastapi

tests/test_exception_handlers.py

import pytest
from fastapi import Depends, FastAPI, HTTPException
from fastapi.exceptions import RequestValidationError
from fastapi.testclient import TestClient
from starlette.responses import JSONResponse


def http_exception_handler(request, exception):
    return JSONResponse({"exception": "http-exception"})


def request_validation_exception_handler(request, exception):
    return JSONResponse({"exception": "request-validation"})

Created: Sun Dec 28 07:19:09 GMT 2025

- Last Modified: Tue Dec 03 22:37:12 GMT 2024

- 2.4K bytes

- Click Count (0)

github.com/tiangolo/fastapi

docs_src/sql_databases/tutorial001_an_py310.py

from typing import Annotated

from fastapi import Depends, FastAPI, HTTPException, Query
from sqlmodel import Field, Session, SQLModel, create_engine, select


class Hero(SQLModel, table=True):
    id: int | None = Field(default=None, primary_key=True)
    name: str = Field(index=True)
    age: int | None = Field(default=None, index=True)
    secret_name: str


sqlite_file_name = "database.db"
sqlite_url = f"sqlite:///{sqlite_file_name}"

Created: Sun Dec 28 07:19:09 GMT 2025

- Last Modified: Wed Oct 09 19:44:42 GMT 2024

- 1.7K bytes

- Click Count (0)

github.com/tiangolo/fastapi

fastapi/applications.py

                **Example**

                ```python
                from fastapi import Depends, FastAPI

                from .dependencies import func_dep_1, func_dep_2

                app = FastAPI(dependencies=[Depends(func_dep_1), Depends(func_dep_2)])
                ```
                """
            ),
        ] = None,
        default_response_class: Annotated[

Created: Sun Dec 28 07:19:09 GMT 2025

- Last Modified: Wed Dec 17 21:25:59 GMT 2025

- 176.3K bytes

- Click Count (0)

github.com/tiangolo/fastapi

docs_src/websockets/tutorial002_an_py310.py

from typing import Annotated

from fastapi import (
    Cookie,
    Depends,
    FastAPI,
    Query,
    WebSocket,
    WebSocketException,
    status,
)
from fastapi.responses import HTMLResponse

app = FastAPI()

html = """
<!DOCTYPE html>
<html>
    <head>
        <title>Chat</title>
    </head>
    <body>
        <h1>WebSocket Chat</h1>
        <form action="" onsubmit="sendMessage(event)">

Created: Sun Dec 28 07:19:09 GMT 2025

- Last Modified: Sat Mar 18 12:29:59 GMT 2023

- 2.8K bytes

- Click Count (0)

github.com/tiangolo/fastapi

docs_src/websockets/tutorial002_py310.py

from fastapi import (
    Cookie,
    Depends,
    FastAPI,
    Query,
    WebSocket,
    WebSocketException,
    status,
)
from fastapi.responses import HTMLResponse

app = FastAPI()

html = """
<!DOCTYPE html>
<html>
    <head>
        <title>Chat</title>
    </head>
    <body>
        <h1>WebSocket Chat</h1>
        <form action="" onsubmit="sendMessage(event)">

Created: Sun Dec 28 07:19:09 GMT 2025

- Last Modified: Sat Mar 18 12:29:59 GMT 2023

- 2.7K bytes

- Click Count (0)

github.com/tiangolo/fastapi

docs_src/sql_databases/tutorial002_an_py39.py

from typing import Annotated, Union

from fastapi import Depends, FastAPI, HTTPException, Query
from sqlmodel import Field, Session, SQLModel, create_engine, select


class HeroBase(SQLModel):
    name: str = Field(index=True)
    age: Union[int, None] = Field(default=None, index=True)


class Hero(HeroBase, table=True):
    id: Union[int, None] = Field(default=None, primary_key=True)
    secret_name: str


class HeroPublic(HeroBase):

Created: Sun Dec 28 07:19:09 GMT 2025

- Last Modified: Wed Oct 09 19:44:42 GMT 2024

- 2.5K bytes

- Click Count (0)

github.com/tiangolo/fastapi

docs_src/websockets/tutorial002_an_py39.py

from typing import Annotated, Union

from fastapi import (
    Cookie,
    Depends,
    FastAPI,
    Query,
    WebSocket,
    WebSocketException,
    status,
)
from fastapi.responses import HTMLResponse

app = FastAPI()

html = """
<!DOCTYPE html>
<html>
    <head>
        <title>Chat</title>
    </head>
    <body>
        <h1>WebSocket Chat</h1>
        <form action="" onsubmit="sendMessage(event)">

Created: Sun Dec 28 07:19:09 GMT 2025

- Last Modified: Sat Mar 18 12:29:59 GMT 2023

- 2.8K bytes

- Click Count (0)

github.com/tiangolo/fastapi

docs/de/docs/advanced/websockets.md

<img src="/img/tutorial/websockets/image04.png">

Und alle verwenden dieselbe WebSocket-Verbindung.

## Verwendung von `Depends` und anderen { #using-depends-and-others }

In WebSocket-Endpunkten können Sie Folgendes aus `fastapi` importieren und verwenden:

* `Depends`
* `Security`
* `Cookie`
* `Header`
* `Path`
* `Query`

Created: Sun Dec 28 07:19:09 GMT 2025

- Last Modified: Wed Dec 17 20:41:43 GMT 2025

- 6.5K bytes

- Click Count (0)

github.com/tiangolo/fastapi

docs/ru/docs/advanced/websockets.md

<img src="/img/tutorial/websockets/image04.png">

И все они будут использовать одно и то же веб-сокет соединение.

## Использование `Depends` и не только { #using-depends-and-others }

Вы можете импортировать из `fastapi` и использовать в эндпоинте вебсокета:

* `Depends`
* `Security`
* `Cookie`
* `Header`
* `Path`
* `Query`

Они работают так же, как и в других FastAPI эндпоинтах/*операциях пути*:

Created: Sun Dec 28 07:19:09 GMT 2025

- Last Modified: Wed Dec 17 20:41:43 GMT 2025

- 8.6K bytes

- Click Count (0)

Search Options