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app.py
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app.py
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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'
#using easy sqlite ///-> relative path ////-> absolute path
db = SQLAlchemy(app) #initialising the database
#creating the databse model
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) #for basic book-keeping
def __repr__(self):
return '<Task %r>' % self.id
# decorator
@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 "Error"
else: #which is a 'GET'
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 "Error"
@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 "Error"
else:
return render_template('update.html', task=task)
with app.app_context():
db.create_all()
if __name__=="__main__":
app.run(debug=True)