So close! I'm able to use syntax highlighting AND grab the content with js (which then adds to a textarea), but the Flask for loop is only noticed on the first iteration. I can't grab the subsequent values. I need to find a way to dynamically find IDs.

app/__init__.py

@@ -5,7 +5,9 @@ app = Flask(__name__)
 app.config.from_object(Config)
 
 # Upload folder
-UPLOAD_FOLDER = 'static/files'
-app.config['UPLOAD_FOLDER'] =UPLOAD_FOLDER
+UPLOAD_FOLDER = "/Users/normrasmussen/Documents/Projects/CSM_webapp/app/static/files"
+# UPLOAD_FOLDER = 'static/files'
+app.config["UPLOAD_FOLDER"] = UPLOAD_FOLDER
+ALLOWED_EXTENSIONS = {"csv"}
 
-from app import routes
+from app import routes, forms