class Category(db.Model):
""" Table: Category of the Event"""
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(50), nullable=False, unique=True)
events = db.relationship("Event",
cascade="delete",
back_populates="category")
class Organizer(db.Model):
""" Table: Organizer of the Event"""
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(64), nullable=True)
email = db.Column(db.String(100), nullable=False, unique=True)
password = db.Column(db.String(50), nullable=False)
events = db.relationship("Event",
cascade="delete",
back_populates="organizer")
class Venue(db.Model):
""" Table: Venue of the Event"""
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(50), nullable=False)
url = db.Column(db.String(50), nullable=True)
city_id = db.Column(db.Integer,
db.ForeignKey("city.id", ondelete="CASCADE"),
nullable=False)
events = db.relationship("Event", cascade="delete", back_populates="venue")
city = db.relationship("City", back_populates="venues")
class Event(db.Model):
""" Table: Event """
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(50), nullable=False)
description = db.Column(db.String(250), nullable=True)
startTime = db.Column(db.DateTime, nullable=False)
venue_id = db.Column(db.Integer,
db.ForeignKey("venue.id", ondelete="CASCADE"),
nullable=False)
organizer_id = db.Column(db.Integer,
db.ForeignKey("organizer.id", ondelete="CASCADE"),
nullable=False)
category_id = db.Column(db.Integer,
db.ForeignKey("category.id", ondelete="CASCADE"),
nullable=False)
url = db.Column(db.String(250), nullable=True, default="")
venue = db.relationship("Venue", back_populates="events")
organizer = db.relationship("Organizer", back_populates="events")
category = db.relationship("Category", back_populates="events")
def set_url(self):
self.url = self.name + "-at-" + self.venue.name + "-" + self.startTime.strftime(
"%Y%m%d%H%M")
class City(db.Model):
""" Table: City of the Venue"""
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(50), nullable=False, unique=True)
venues = db.relationship("Venue", cascade="delete", back_populates="city")