File Uploads

Batman learned how to handle file uploads using Robyn. He created an endpoint to handle file uploads using the following code:

Sending a File without MultiPart Form Data

Batman scaled his application across multiple cores for better performance. He used the following command:

Request

GET

/hello_world

@app.post("/upload")
async def upload():
  body = request.body
  file = bytearray(body)

  # write whatever filename
  with open('test.txt', 'wb') as f:
      f.write(body)

  return {'message': 'success'}

Sending a File with MultiPart Form Data

Batman scaled his application across multiple cores for better performance. He used the following command:

Request

GET

/hello_world


@app.post("/sync/multipart-file")
def sync_multipart_file(request: Request):
    files = request.files
    file_names = files.keys()
    return {"file_names": list(file_names)}

File Downloads

Batman now wanted to allow users to download files from his application. He created an endpoint to handle file downloads using the following code:

Serving Simple HTML Files

Batman scaled his application across multiple cores for better performance. He used the following command:

Request

GET

/hello_world

from robyn import Robyn, serve_html

app = Robyn(__file__)


@app.get("/")
async def h(request):
    return serve_html("./index.html")

app.start(port=8080)

Serving simple HTML strings

Speaking of HTML files, Batman wanted to serve simple HTML strings. He was suggested to use the following code:

Request

GET

/hello_world

from robyn import Robyn, html

app = Robyn(__file__)


@app.get("/")
async def h(request):
    html_string = "<h1>Hello World</h1>"
    return html(html_string)

app.start(port=8080)

Serving Other Files

Now, that Batman was able to serve HTML files, he wanted to serve other files like CSS, JS, and images. He was suggested to use the following code:

Request

GET

/hello_world

from robyn import Robyn, serve_file

app = Robyn(__file__)


@app.get("/")
async def h(request):
    return serve_file("./index.html", file_name="index.html") # file_name is optional

app.start(port=8080)

Serving Directories

After serving other files, Batman wanted to serve directories, e.g. to serve a React build directory or just a simple HTML/CSS/JS directory. He was suggested to use the following code:

Request

GET

/hello_world

from robyn import Robyn, serve_file

app = Robyn(__file__)


app.serve_directory(
    route="/test_dir",
    directory_path=os.path.join(current_file_path, "build"),
    index_file="index.html",
)

app.start(port=8080)

What's next?

Now, Batman was ready to learn about the advanced features of Robyn. He wanted to find a way to handle form data

Form Data