database_setup.py

import os
import sys
from cgitb import text


from sqlalchemy import Column, ForeignKey, Integer, String
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import relationship
from sqlalchemy import create_engine
from flask import jsonify


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))
    provider = Column(String(25))


class Category(Base):
    __tablename__ = "category"

    id = Column(Integer, primary_key=True)
    name = Column(String(250), nullable=False)
    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,
            'id': self.id,

        }


class Items(Base):
    __tablename__ = "items"

    name = Column(String(80), nullable=False)
    id = Column(Integer, primary_key=True)
    description = Column(String(250))
    category_id = Column(Integer, ForeignKey('category.id'))
    category = relationship(Category)
    user_id = Column(Integer, ForeignKey('user.id'))
    user = relationship(User,cascade = "save-update")
# serializable format
# Return object data in easily serializeable format

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

            'id': self.id,

            'description': self.description,

            'category': self.category.name,

        }


# configuration part

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

Base.metadata.create_all(engine)