How to implement guide with file upload in flask: can’t access uploaded files in production environment
I've looked through the documentation and I'm still confused about Quick question that's been bugging me - I've been researching this but I'm working with a frustrating scenario with file uploads in my Flask application when deployed to a production environment using Gunicorn... My file upload mechanism works perfectly on local development with Flask's built-in server, but I need to access the files after uploading them in production. Here's the relevant code for handling the file upload: ```python from flask import Flask, request, redirect, url_for, flash import os app = Flask(__name__) app.config['UPLOAD_FOLDER'] = 'uploads/' app.config['MAX_CONTENT_LENGTH'] = 16 * 1024 * 1024 # 16 MB limit @app.route('/upload', methods=['POST']) def upload_file(): if 'file' not in request.files: flash('No file part') return redirect(request.url) file = request.files['file'] if file.filename == '': flash('No selected file') return redirect(request.url) filepath = os.path.join(app.config['UPLOAD_FOLDER'], file.filename) file.save(filepath) flash('File successfully uploaded') return redirect(url_for('upload_file')) ``` In my production settings, I have the `UPLOAD_FOLDER` directory created and properly set up with write permissions. However, after uploading a file, I get an empty response, and the file is not saved. When I check the Gunicorn logs, I see an behavior saying `OSError: [Errno 13] Permission denied: 'uploads/filename.ext'`. I've tried changing the permissions on the `uploads` directory to `777`, but the scenario continues. I've also verified that the directory exists at the specified path and is not located in a restricted area of the filesystem. Here is the relevant part of my Gunicorn command: ```bash gunicorn -w 4 -b 0.0.0.0:8000 myapp:app ``` Could this be an scenario with how Gunicorn is configured or the environment it runs in? Any ideas on what I might be missing or how to debug this further? It’s vital for my application to handle file uploads correctly in production, and I appreciate any guidance on best practices here. For context: I'm using Python on Windows 10. The stack includes Python and several other technologies. What's the correct way to implement this? Thanks for any help you can provide!