app.py

from flask import Flask, request, jsonify 
from flask_sqlalchemy import SQLAlchemy
from flask_marshmallow import Marshmallow 
from flask import Flask, request


app= Flask(__name__)
marsh = Marshmallow(app)
app.app_context().push()
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///nfc.sqlite3' 
db = SQLAlchemy(app) 
class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(50), nullable=False)
    email = db.Column(db.String(100), nullable=False)

class Meeting(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    title = db.Column(db.String(100), nullable=False)
    content = db.Column(db.Text, nullable=False)
    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
    user = db.relationship('User', backref=db.backref('posts', lazy=True)) 

class Attendance(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    title = db.Column(db.String(100), nullable=False)
    content = db.Column(db.Text, nullable=False)
    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
    user = db.relationship('User', backref=db.backref('posts', lazy=True)) 

@app.route('/create_tables')
def create_tables():
    db.create_all()
    return 'Tables created successfully!'

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