Axios, POST request to Flask
You need to add CORS support to your Flask app. See a related threat here:Flask-CORS not working for POST, but working for GET. A popular CORS extension for Flask can be found here: https://flask-cors.readthedocs.io/en/latest/.
If anyone else is stuck, be sure to check your before and after request methods. My problem was this:
@app.before_requestdef oauth_verify(*args, **kwargs): """Ensure the oauth authorization header is set""" if not _is_oauth_valid(): return some_custome_error_response("you need oauth!")So then this would raise an exception on any request, including an OPTIONS method. Of course, the fix is easy:
@app.before_requestdef oauth_verify(*args, **kwargs): """Ensure the oauth authorization header is set""" if request.method in ['OPTIONS', ]: return if not _is_oauth_valid(): return some_custome_error_response("you need oauth!")