Form Verileri ve Dosya Yüklemeleri

Form Data Basics

FastAPI's Form Dependency

Basic Form Endpoint Example

from fastapi import FastAPI, Form
import uvicorn

app = FastAPI()

@app.post("/login/")
async def login(username: str = Form(...), password: str = Form(...)):
    return {"username": username, "message": "Login successful!"}

if __name__ == "__main__":
    uvicorn.run(app, host="0.0.0.0", port=8000)

Interacting with Form Data

curl -X POST "http://127.0.0.1:8000/login/" \
     -H "Content-Type: application/x-www-form-urlencoded" \
     -d "username=coddy&password=secret"

File Uploads Explained

FastAPI's UploadFile

from fastapi import FastAPI, File, UploadFile
import uvicorn

app = FastAPI()

@app.post("/uploadfile/")
async def create_upload_file(file: UploadFile = File(...)):
    return {"filename": file.filename, "content_type": file.content_type}

if __name__ == "__main__":
    uvicorn.run(app, host="0.0.0.0", port=8000)

Saving One Uploaded File

from fastapi import FastAPI, File, UploadFile
import uvicorn
import shutil
import os

app = FastAPI()

# Ensure the 'files' directory exists
os.makedirs("files", exist_ok=True)

@app.post("/uploadandsave/")
async def upload_and_save_file(file: UploadFile = File(...)):
    file_location = f"files/{file.filename}"
    with open(file_location, "wb+") as file_object:
        shutil.copyfileobj(file.file, file_object)
    return {"message": f"File '{file.filename}' saved at '{file_location}'"}

if __name__ == "__main__":
    uvicorn.run(app, host="0.0.0.0", port=8000)

Uploading Many Files

from fastapi import FastAPI, File, UploadFile
from typing import List
import uvicorn

app = FastAPI()

@app.post("/uploadmultiple/")
async def create_upload_files(files: List[UploadFile] = File(...)):
    uploaded_filenames = [file.filename for file in files]
    return {"filenames": uploaded_filenames, "message": "Files received!"}

if __name__ == "__main__":
    uvicorn.run(app, host="0.0.0.0", port=8000)

Saving Multiple Uploads

from fastapi import FastAPI, File, UploadFile
from typing import List
import uvicorn
import shutil
import os

app = FastAPI()

# Ensure the 'files' directory exists
os.makedirs("files", exist_ok=True)

@app.post("/uploadandsavemultiple/")
async def upload_and_save_multiple_files(files: List[UploadFile] = File(...)):
    saved_files = []
    for file in files:
        file_location = f"files/{file.filename}"
        with open(file_location, "wb+") as file_object:
            shutil.copyfileobj(file.file, file_object)
        saved_files.append(file.filename)
    return {"message": f"Successfully uploaded: {', '.join(saved_files)}"}

if __name__ == "__main__":
    uvicorn.run(app, host="0.0.0.0", port=8000)

Form & File Check

Lesson Summary