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https://github.com/tmdinosaurcenter/kiosk-guestbook.git
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3652a3b98a
- Configure Python logging at INFO level. - Log key events: database initialization, incoming requests, validation errors, and successful guest submissions. - Log the number of guest entries displayed when rendering the page. This improves observability and helps with troubleshooting.
87 lines
3.0 KiB
Python
87 lines
3.0 KiB
Python
from flask import Flask, render_template, request, redirect, url_for
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import sqlite3
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import re
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import logging
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# Set up basic logging
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logging.basicConfig(level=logging.INFO)
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logger = logging.getLogger(__name__)
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app = Flask(__name__)
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DATABASE = 'guestbook.db'
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def init_db():
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conn = sqlite3.connect(DATABASE)
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c = conn.cursor()
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c.execute('''
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CREATE TABLE IF NOT EXISTS guests (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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first_name TEXT NOT NULL,
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last_name TEXT NOT NULL,
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email TEXT NOT NULL,
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location TEXT NOT NULL,
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timestamp DATETIME DEFAULT CURRENT_TIMESTAMP
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)
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''')
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conn.commit()
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conn.close()
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logger.info("Database initialized.")
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def is_valid_email(email):
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# A simple regex for basic email validation
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pattern = r'^[\w\.-]+@[\w\.-]+\.\w+$'
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return re.match(pattern, email)
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@app.route('/', methods=['GET', 'POST'])
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def index():
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error = None
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if request.method == 'POST':
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logger.info("Received POST request with form data.")
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first_name = request.form.get('first_name', '').strip()
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last_name = request.form.get('last_name', '').strip()
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email = request.form.get('email', '').strip()
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location = request.form.get('location', '').strip()
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# Basic validation checks
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if not (first_name and last_name and email and location):
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error = "All fields are required."
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logger.warning("Validation error: Missing required fields.")
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elif not is_valid_email(email):
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error = "Invalid email address."
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logger.warning("Validation error: Invalid email address '%s'.", email)
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if error:
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# Retrieve guest entries to display on the page.
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conn = sqlite3.connect(DATABASE)
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c = conn.cursor()
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c.execute('SELECT first_name, location FROM guests ORDER BY id DESC')
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guests = c.fetchall()
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conn.close()
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return render_template('index.html', error=error, guests=guests)
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# If validations pass, insert the data into the database.
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conn = sqlite3.connect(DATABASE)
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c = conn.cursor()
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c.execute(
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'INSERT INTO guests (first_name, last_name, email, location) VALUES (?, ?, ?, ?)',
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(first_name, last_name, email, location)
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)
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conn.commit()
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conn.close()
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logger.info("New guest entry added: %s from %s.", first_name, location)
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return redirect(url_for('index'))
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# For GET requests, retrieve guest entries to display.
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conn = sqlite3.connect(DATABASE)
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c = conn.cursor()
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c.execute('SELECT first_name, location FROM guests ORDER BY id DESC')
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guests = c.fetchall()
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conn.close()
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logger.info("Rendering guestbook page with %d entries.", len(guests))
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return render_template('index.html', error=error, guests=guests)
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if __name__ == '__main__':
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init_db()
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logger.info("Starting Flask app on host 0.0.0.0, port 5000.")
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app.run(host='0.0.0.0', port=5000)
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