models.py

from flask_sqlalchemy import SQLAlchemy
from datetime import datetime, UTC

db = SQLAlchemy()

class Contact(db.Model):
    __tablename__ = 'contacts'
    
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(100), nullable=False)
    phone = db.Column(db.String(20), nullable=False)
    email = db.Column(db.String(120))
    type = db.Column(db.String(20), nullable=False)
    created_at = db.Column(db.DateTime, default=lambda: datetime.now(UTC))
    
    def to_dict(self):
        return {
            'id': self.id,
            'name': self.name,
            'phone': self.phone,
            'email': self.email,
            'type': self.type,
            'created_at': self.created_at.isoformat()
        }