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pythonhttpflaskwerkzeug

python flask - serve file on different url

I've build an rest server in flask with CRUD for Order objects.

So there's an endpoint for POST /order to create the Order and the user can then upload an attachment on POST /order/{order_id}/attachment

I also want to serve the attachment, to be downloadable on the same url. So that GET /order/{order_id}/attachment downloads the attachment file.

But when I return the werkzeug.datastructures.FileStorage, with the filename attribute set, the browser gives me an file to save with name: attachment

Is there a way to send the file with flask, with the correct filename on an different url?

Solution

  • The send_from_directory method might come in handy to serve the file(s). Example (a bit pseudo-coded):

    @app.route('/order/{order_id}/attachment')
def download_file(order_id):
    order = get_order_from_db(order_id)

    filename = order.attachment

    return send_from_directory(app.config['UPLOAD_FOLDER'], filename)

    More on send_from_directory: http://flask.pocoo.org/docs/0.12/api/#flask.send_from_directory