liza.py

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

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///test.db'

db = SQLAlchemy(app)


class Todo(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    # no null content
    content = db.Column(db.String(200), nullable=False)
    date = db.Column(db.DateTime, default=datetime.utcnow)

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


@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 the data'

    else:
        tasks = Todo.query.order_by(Todo.date_createde).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 an issue adding the data'

@app.route('/update/<int:id>')
def update(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 an issue adding the data'


if __name__ == '__main__':
    app.run(debug=True)