from flask import Flask, redirect, url_for, request, render_template # Create the application. APP = Flask(__name__) # Define different routes of the application. @APP.route('/', methods=['GET', 'POST']) def index(): title = "Hello Flask" # If something is submitted through the form... # ref: https://pythonbasics.org/flask-http-methods/ if request.method == 'POST': # Read the values from the form element. name = request.form['name'] text = request.form['text'] # Write the submitted data to a file, which is # in this case a "csv" (comma seperated values) file # that you can also open with spreadsheet software. # Note that the file is opened in the mode "a+" # which means that the Flask application will append values # (and not overwrite the csv file). with open('database.csv', 'a+') as db: db.write(f"{ name},{ text }\n") msg = "Thanks!" # PRG pattern(Post Redirect Get pattern), to avoid repetition of contents # https://en.wikipedia.org/wiki/Post/Redirect/Get return redirect(url_for('index')) # If the index page is loaded... else: msg = "Please submite the form below." return render_template('index.html', title=title, msg=msg) if __name__ == '__main__': APP.debug = True APP.run(port = 3000)