database_setup.py

from sqlalchemy import Column, ForeignKey, Integer, String
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import relationship, backref
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker

Base = declarative_base()

# Create a class for Users


class User(Base):
    __tablename__ = 'user'

    id = Column(Integer, primary_key=True)
    name = Column(String(250), nullable=False)
    email = Column(String(250), nullable=False)
    picture = Column(String(250))


# create a category class for category table
class Category(Base):
    __tablename__ = 'category'

    id = Column(Integer, primary_key=True)
    name = Column(String(80), nullable=False)
    picture = Column(String(250), nullable=False)
    user_id = Column(Integer, ForeignKey('user.id'))
    user = relationship(User)

    @property
    def serialize(self):
        return {
            'id': self.id,
            'name': self.name,
            'picture': self.picture,
        }

# create an item class for item table


class Items(Base):
    __tablename__ = 'items'

    id = Column(Integer, primary_key=True)
    name = Column(String(250), nullable=False)
    image = Column(String(250))
    price = Column(String(8), nullable=False)
    description = Column(String(250), nullable=False)
    category_id = Column(Integer, ForeignKey('category.id'))
    category = relationship('Category', backref=backref(
        'items', cascade='all, delete'))
    user_id = Column(Integer, ForeignKey('user.id'))
    user = relationship(User)

    @property
    def serialize(self):
        return {
            'id': self.id,
            'name': self.name,
            'image': self.image,
            'price': self.price,
            'description': self.description,
            'category': self.category.name,
        }


engine = create_engine('sqlite:///itemcatalog.db',
                       connect_args={'check_same_thread': False}, echo=True)

Base.metadata.create_all(engine)