"""Demo file showing off a model for SQLAlchemy."""

from flask_sqlalchemy import SQLAlchemy

db = SQLAlchemy()


def connect_db(app):
    """Connect to database."""

    db.app = app
    db.init_app(app)


class User(db.Model):
    """User."""

    __tablename__ = "users"

    id = db.Column(db.Integer,
                   primary_key=True,
                   autoincrement=True)
    name = db.Column(db.Text,
                     nullable=False)
    email = db.Column(db.Text, nullable=True)