app.py

from flask import Flask, render_template, url_for, request, redirect
from flask_sqlalchemy import SQLAlchemy
from datetime import datetime
import os

# whtf???

app = Flask(__name__)

app.config["SQLALCHEMY_DATABASE_URI"] = "sqlite:///test.db"

# app.config["SQLALCHEMY_DATABASE_URI"] = (
#     "mysql+pymysql://<DB_USER>:<DB_PASSWORD>@/<DB_NAME>?unix_socket=/cloudsql/<INSTANCE_CONNECTION_NAME>"
# )
db = SQLAlchemy(app)


class Todo(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    content = db.Column(db.String(200), nullable=False)
    date_created = db.Column(db.DateTime, default=datetime.utcnow)

    def __repr__(self):
        return "<Task %r>" % self.id


with app.app_context():
    db.create_all()


@app.route("/", methods=["POST", "GET"])
def index():
    if request.method == "POST":
        task_content = request.form["content"]
        new_task = Todo(content=task_content)
        try:
            db.session.add(new_task)
            db.session.commit()
            return redirect("/")
        except:
            return "There was an issue adding your task"
    else:
        tasks = Todo.query.order_by(Todo.date_created).all()
        return render_template("index.html", tasks=tasks)


@app.route("/delete/<int:id>")
def delete(id):
    task_to_delete = Todo.query.get_or_404(id)
    try:
        db.session.delete(task_to_delete)
        db.session.commit()
        return redirect("/")
    except:
        return "There was a problem deleting that task"


@app.route("/update/<int:id>", methods=["GET", "POST"])
def update(id):
    task = Todo.query.get_or_404(id)
    if request.method == "POST":
        task.content = request.form["content"]
        try:
            db.session.commit()
            return redirect("/")
        except:
            return "There was an issue updating your task"
    else:
        return render_template("update.html", task=task)


if __name__ == "__main__":
    port = int(os.environ.get("PORT", 8080))
    app.run(host="0.0.0.0", port=port)