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database_setup.py
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database_setup.py
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from sqlalchemy import Column, ForeignKey, Integer, String, Float
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import relationship
from sqlalchemy import create_engine
# Database setup
Base = declarative_base()
# Setting the database engine to communicate with
engine = create_engine("sqlite:///onlineshop.db")
# User's table
class User(Base):
__tablename__ = "user"
id = Column(Integer, primary_key=True)
username = Column(String(250), nullable=False)
email = Column(String(250), nullable=False)
picture = Column(String(250))
# Category's table
class Category(Base):
__tablename__ = "category"
id = Column(Integer, primary_key=True)
name = Column(String(250), nullable=False)
picture = Column(String(250))
user_id = Column(Integer, ForeignKey("user.id"))
user = relationship(User)
item = relationship('Item', cascade='all, delete-orphan')
# Add a decorator property to serialize data from database
@property
def serialize(self):
return {
'id': self.id,
'name': self.name,
'picture': self.picture
}
# Item's table
class Item(Base):
__tablename__ = "item"
id = Column(Integer, primary_key=True)
name = Column(String(250), nullable=False)
picture = Column(String(250))
description = Column(String(250), nullable=False)
price = Column(Float, nullable=False)
category_id = Column(Integer, ForeignKey("category.id"))
user_id = Column(Integer, ForeignKey("user.id"))
category = relationship(Category)
user = relationship(User)
# Add a decorator property to serialize data from database
@property
def serialize(self):
return {
'id': self.id,
'name': self.name,
'picture': self.picture,
'description': self.description,
'price': self.price
}
Base.metadata.create_all(engine)