cs50/app.py

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import os
from cs50 import SQL
from flask import Flask, flash, jsonify, redirect, render_template, request, session
# Configure application
app = Flask(__name__)
# Ensure templates are auto-reloaded
app.config["TEMPLATES_AUTO_RELOAD"] = True
# Configure CS50 Library to use SQLite database
db = SQL("sqlite:///birthdays.db")
@app.after_request
def after_request(response):
"""Ensure responses aren't cached"""
response.headers["Cache-Control"] = "no-cache, no-store, must-revalidate"
response.headers["Expires"] = 0
response.headers["Pragma"] = "no-cache"
return response
@app.route("/", methods=["GET", "POST"])
def index():
if request.method == "POST":
# Add the user's entry into the database
name = request.form.get("name")
if not name:
return redirect("/")
day = request.form.get("day")
if not day:
return redirect("/")
try:
day = int(day)
except ValueError:
return redirect("/")
if day < 1 or day > 31:
return redirect("/")
month = request.form.get("month")
if not month:
return redirect("/")
try:
month = int(month)
except ValueError:
return redirect("/")
if month < 1 or month > 12:
return redirect("/")
db.execute("INSERT INTO birthdays(name, day, month) VALUES(?, ?, ?)", name, day ,month)
return redirect("/")
else:
# Display the entries in the database on index.html
bdays = db.execute("SELECT * FROM birthdays")
return render_template("index.html", bdays=bdays)
# Remove single entry
@app.route("/remove", methods=["POST"])
def remove():
bday_id = request.form.get("id")
db.execute("DELETE FROM birthdays WHERE ID=?", bday_id)
return redirect("/")
# Remove all entries
@app.route("/remove_all", methods=["POST"])
def remove_all():
db.execute("DELETE FROM birthdays")
return redirect("/")