Web Development — Flask
Published in
2 min readOct 17, 2023
Explore the world of web development with Flask. Learn how to create a virtual environment, install Flask, and set up a local web server. Dive into the web server’s code and discover how to save submitted form data to CSV files. With clear steps and practical examples, this post is a valuable resource for beginners and aspiring web developers. Get ready to embark on your web development journey and bring your project ideas to life with Flask.
- Download website template
- Create virtual env
python3 -m venv venv3. Activate virtual env
. venv/bin/activate4. Install Flask
pip3 install Flask5. Launch the web server in the localhost
flask --app server run --debugWeb Server Code
- Save submitted form data to
.csvfile
from flask import Flask, render_template, request, redirect
import csv
app = Flask(__name__)
@app.route('/')
@app.route('/index.html')
def home():
return render_template('./index.html')
@app.route("/<string:page_name>")
def html_page(page_name):
return render_template(page_name)
def write_to_file(data):
with open('database.txt', mode='a') as database:
email = data['email']
subject = data['subject']
message = data['message']
file = database.write(f'\n{email}, {subject}, {message}')
def write_to_csv(data):
with open('database.csv', mode='a', newline='') as csvfile:
email = data['email']
subject = data['subject']
message = data['message']
csv_writer = csv.writer(csvfile, delimiter=',', quotechar='"', quoting=csv.QUOTE_MINIMAL)
csv_writer.writerow([email, subject, message])
@app.route('/submit_form', methods=['POST', 'GET'])
def submit_form():
if request.method == 'POST':
try:
data = request.form.to_dict()
write_to_csv(data)
return redirect('./thankyou.html')
except:
return 'did not save to db'
else:
return 'something went wrong'
