setup_db.py

import os
import sys
from sqlalchemy import Column, ForeignKey, Integer, String, DateTime
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import relationship
from sqlalchemy import create_engine
from sqlalchemy.sql import func


Base = declarative_base()

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), nullable=True)

    @property
    def serialize(self):
        """Return object data in easily serializeable format"""
        return {
            'id': self.id,
            'name': self.name,
            'email': self.email,
            'picture': self.picture,

        }


class Category(Base):
    __tablename__ = 'category'

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

    @property
    def serialize(self):
        """Return object data in easily serializeable format"""
        return {
            'name': self.name,
            'id': self.id,
        }


class Item(Base):
    __tablename__ = 'item'

    name = Column(String(80), nullable=False)
    id = Column(Integer, primary_key=True)
    description = Column(String(250))
    price = Column(String(8))
    picture = Column(String(250))
    category_id = Column(Integer, ForeignKey('category.id'))
    category = relationship(Category)
    time_created = Column(DateTime(timezone=True), server_default=func.now())
    time_updated = Column(DateTime(timezone=True), onupdate=func.now())
    user_id =  Column(Integer, ForeignKey('user.id'))
    user = relationship(User)

    @property
    def serialize(self):
        """Return object data in easily serializeable format"""
        return {
            'name': self.name,
            'description': self.description,
            'id': self.id,
            'price': self.price,
            'picture': self.picture,
            'time_created': self.time_created,
            'time_updated': self.time_updated, 
        }

engine = create_engine('sqlite:///categoryanditems.db')


Base.metadata.create_all(engine)