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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, DateTime, Text, LargeBinary
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import relationship, sessionmaker
from sqlalchemy import create_engine
Base = declarative_base()
class Category(Base):
__tablename__ = "categories"
id = Column(Integer, primary_key=True)
name = Column(String(255), unique=True, nullable = False)
items = relationship("Item", backref="category")
@property
def serialize(self):
return {
'id' : self.id,
'name' : self.name,
'items' : [item.serialize for item in self.items]
}
def serializeToXml(self, content):
content.append("<Category>")
content.append("<ID>%s</ID>" % self.id)
content.append("<Name>%s</Name>" % self.name)
if self.items:
content.append("<Items>")
for item in self.items:
item.serializeToXml(content)
content.append("</Items>")
else:
content.append("<Items/>")
content.append("</Category>")
class Item(Base):
__tablename__ = "items"
id = Column(Integer, primary_key = True)
name = Column(String(255), nullable = False)
description = Column(Text, nullable = True)
creation_date = Column(DateTime, nullable = False)
picture = Column(Text, nullable = True)
picture_data = Column(LargeBinary, nullable = True)
category_id = Column(Integer, ForeignKey("categories.id"))
@property
def serialize(self):
return {
'id' : self.id,
'name' : self.name,
'description' : self.description,
'creation_date' : self.creation_date
}
def serializeToXml(self, content):
content.append("<Item>")
content.append("<ID>%s</ID>" % self.id)
content.append("<Name>%s</Name>" % self.name)
if self.description:
content.append("<Description>%s</Description>" % self.description)
else:
content.append("<Description/>")
content.append("<CreationDate>%s</CreationDate>" % self.creation_date.isoformat())
content.append("</Item>")
class User(Base):
__tablename__ = "users"
id = Column(String(255), primary_key = True) # the id from Google is to big to be stored in an Integer
name = Column(String(255), nullable = False)
def is_authenticated(self):
return True
def is_active(self):
return True
def is_anonymous(self):
return False
def get_id(self):
return self.id
if __name__ == '__main__':
engine = create_engine('sqlite:///itemcatalog.db')
Base.metadata.create_all(engine)
DBSession = sessionmaker(bind=engine)
session = DBSession()
session.add(Category(name="Soccer"))
session.add(Category(name="Basketball"))
session.add(Category(name="Baseball"))
session.add(Category(name="Frisbee"))
session.add(Category(name="Snowboarding"))
session.add(Category(name="Rock Climbing"))
session.add(Category(name="Football"))
session.add(Category(name="Skating"))
session.add(Category(name="Hockey"))
session.commit()