models.py

from app import db

class Venue(db.Model):
    __tablename__ = 'venues'

    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String)
    genres = db.Column(db.ARRAY(db.String()))
    address = db.Column(db.String(120))
    city = db.Column(db.String(120))
    state = db.Column(db.String(120))
    phone = db.Column(db.String(120))
    image_link = db.Column(db.String(500))
    facebook_link = db.Column(db.String(120))
    website = db.Column(db.String(120))
    seeking_talent = db.Column(db.Boolean)
    seeking_description = db.Column(db.String(500))
    shows = db.relationship('Show', backref='Venues', lazy=True)

    def __repr__(self):
        return f'<Venue {self.name}: ID {self.id}>'

class Show(db.Model):
    __tablename__ = 'shows'

    id = db.Column(db.Integer, primary_key=True)
    venue_id = db.Column(db.Integer, db.ForeignKey('venues.id'))
    artist_id = db.Column(db.Integer, db.ForeignKey('artists.id'))
    start_time = db.Column(db.DateTime, nullable=False)

    def __repr__(self):
        return '<Show {}{}>'.format(self.artist_id, self.venue_id)

class Artist(db.Model):
    __tablename__ = 'artists'

    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String)
    city = db.Column(db.String(120))
    state = db.Column(db.String(120))
    phone = db.Column(db.String(120))
    genres = db.Column(db.ARRAY(db.String), nullable=False)
    website = db.Column(db.String(120))
    image_link = db.Column(db.String(500))
    facebook_link = db.Column(db.String(120))
    seeking_venue = db.Column(db.Boolean)
    seeking_description = db.Column(db.String(500))
    shows = db.relationship('Show', backref='Artists', lazy=True)

    def __repr__(self):
        return '<Artist {}>'.format(self.name)