docs_src/request_files/tutorial001_02.py

from typing import Union

from fastapi import FastAPI, File, UploadFile

app = FastAPI()


@app.post("/files/")
async def create_file(file: Union[bytes, None] = File(default=None)):
    if not file:
        return {"message": "No file sent"}
    else:
        return {"file_size": len(file)}


@app.post("/uploadfile/")
async def create_upload_file(file: Union[UploadFile, None] = None):
    if not file:
        return {"message": "No upload file sent"}
    else:
        return {"filename": file.filename}
📝 Add docs recommending `Union` over `Optional` and migrate source examples (#4908) * 📝 Add docs recommending Union over Optional * 📝 Update docs recommending Union over Optional * 📝 Update source examples for docs, recommend Union over Optional * 📝 Update highlighted lines with updated source examples * 📝 Update highlighted lines in Markdown with recent code changes * 📝 Update docs, use Union instead of Optional * ♻️ Update source examples to recommend Union over Optional * 🎨 Update highlighted code in Markdown after moving from Optional to Union 2022-05-14 06:59:59 -05:00			`from typing import Union`
✨ Add support for declaring `UploadFile` parameters without explicit `File()` (#4469) 2022-01-23 20:14:13 +01:00
			`from fastapi import FastAPI, File, UploadFile`

			`app = FastAPI()`


			`@app.post("/files/")`
📝 Add docs recommending `Union` over `Optional` and migrate source examples (#4908) * 📝 Add docs recommending Union over Optional * 📝 Update docs recommending Union over Optional * 📝 Update source examples for docs, recommend Union over Optional * 📝 Update highlighted lines with updated source examples * 📝 Update highlighted lines in Markdown with recent code changes * 📝 Update docs, use Union instead of Optional * ♻️ Update source examples to recommend Union over Optional * 🎨 Update highlighted code in Markdown after moving from Optional to Union 2022-05-14 06:59:59 -05:00			`async def create_file(file: Union[bytes, None] = File(default=None)):`
✨ Add support for declaring `UploadFile` parameters without explicit `File()` (#4469) 2022-01-23 20:14:13 +01:00			`if not file:`
			`return {"message": "No file sent"}`
			`else:`
			`return {"file_size": len(file)}`


			`@app.post("/uploadfile/")`
📝 Add docs recommending `Union` over `Optional` and migrate source examples (#4908) * 📝 Add docs recommending Union over Optional * 📝 Update docs recommending Union over Optional * 📝 Update source examples for docs, recommend Union over Optional * 📝 Update highlighted lines with updated source examples * 📝 Update highlighted lines in Markdown with recent code changes * 📝 Update docs, use Union instead of Optional * ♻️ Update source examples to recommend Union over Optional * 🎨 Update highlighted code in Markdown after moving from Optional to Union 2022-05-14 06:59:59 -05:00			`async def create_upload_file(file: Union[UploadFile, None] = None):`
✨ Add support for declaring `UploadFile` parameters without explicit `File()` (#4469) 2022-01-23 20:14:13 +01:00			`if not file:`
			`return {"message": "No upload file sent"}`
			`else:`
			`return {"filename": file.filename}`