diff --git a/lib/freebies.db b/freebies.db similarity index 74% rename from lib/freebies.db rename to freebies.db index 12beb1c96..7de22c03c 100644 Binary files a/lib/freebies.db and b/freebies.db differ diff --git a/lib/debug.py b/lib/debug.py index 4f922eb69..f8cccafc3 100644 --- a/lib/debug.py +++ b/lib/debug.py @@ -1,9 +1,44 @@ -#!/usr/bin/env python3 +# #!/usr/bin/env python3 +# from sqlalchemy import create_engine + +# from models import Company, Dev + +# if __name__ == '__main__': +# engine = create_engine('sqlite:///freebies.db') +# import ipdb; ipdb.set_trace() + +# debug.py +from models import Company, Dev, Freebie +from sqlalchemy.orm import sessionmaker from sqlalchemy import create_engine -from models import Company, Dev +engine = create_engine('sqlite:///freebies.db') +Session = sessionmaker(bind=engine) +session = Session() + +# Test retrieving a dev and viewing their companies +dev = session.query(Dev).filter_by(name='Dev 1').first() +print(dev.companies) + +# Test giving a freebie +company = session.query(Company).filter_by(name='Company A').first() +new_freebie = company.give_freebie(dev, 'Sticker', 5) +session.add(new_freebie) +session.commit() + +# Test printing freebie details +print(new_freebie.print_details()) + +# Test oldest company +oldest = Company.oldest_company() +print(oldest) + +# Test received_one method +print(dev.received_one('Laptop')) -if __name__ == '__main__': - engine = create_engine('sqlite:///freebies.db') - import ipdb; ipdb.set_trace() +# Test give_away method +dev2 = session.query(Dev).filter_by(name='Dev 2').first() +dev.give_away(dev2, new_freebie) +session.commit() +print(new_freebie.dev.name) diff --git a/lib/migrations/versions/7a71dbf71c64_create_db.py b/lib/migrations/versions/7a71dbf71c64_create_db.py index 23e0a655b..d0f9661e5 100644 --- a/lib/migrations/versions/7a71dbf71c64_create_db.py +++ b/lib/migrations/versions/7a71dbf71c64_create_db.py @@ -1,24 +1,28 @@ -"""create db +"""Create db -Revision ID: 7a71dbf71c64 -Revises: +Revision ID: 7a71db71c64 +Revises: Create Date: 2023-03-15 15:05:55.516631 """ from alembic import op import sqlalchemy as sa - -# revision identifiers, used by Alembic. -revision = '7a71dbf71c64' +revision = '7a71db71c64' down_revision = None branch_labels = None depends_on = None - -def upgrade() -> None: - pass - - -def downgrade() -> None: - pass +def upgrade(): + op.create_table( + 'freebies', + sa.Column('id', sa.Integer, primary_key=True), + sa.Column('item_name', sa.String, nullable=False), + sa.Column('value', sa.Integer, nullable=False), + # item and value are above there + sa.Column('dev_id', sa.Integer, sa.ForeignKey('devs.id'), nullable=False), + sa.Column('company_id', sa.Integer, sa.ForeignKey('companies.id'), nullable=False) + ) + +def downgrade(): + op.drop_table('freebies') diff --git a/lib/models.py b/lib/models.py index 2681bee5a..f0e1459b0 100644 --- a/lib/models.py +++ b/lib/models.py @@ -1,29 +1,81 @@ from sqlalchemy import ForeignKey, Column, Integer, String, MetaData -from sqlalchemy.orm import relationship, backref -from sqlalchemy.ext.declarative import declarative_base +from sqlalchemy.orm import relationship, backref, declarative_base, sessionmaker +from sqlalchemy import create_engine + + convention = { "fk": "fk_%(table_name)s_%(column_0_name)s_%(referred_table_name)s", } -metadata = MetaData(naming_convention=convention) +metadata = MetaData(naming_convention=convention) Base = declarative_base(metadata=metadata) class Company(Base): __tablename__ = 'companies' - id = Column(Integer(), primary_key=True) - name = Column(String()) - founding_year = Column(Integer()) + id = Column(Integer, primary_key=True) + name = Column(String, nullable=False) + founding_year = Column(Integer, nullable=False) + + freebies = relationship('Freebie', backref=backref('company', lazy=True)) + devs = relationship('Dev', secondary='freebies', backref='companies') def __repr__(self): return f'' + def give_freebie(self, dev, item_name, value, session): + new_freebie = Freebie(item_name=item_name, value=value, dev=dev, company=self) + session.add(new_freebie) + session.commit() + return new_freebie + + @classmethod + def oldest_company(cls, session): + return session.query(cls).order_by(cls.founding_year).first() + class Dev(Base): __tablename__ = 'devs' - id = Column(Integer(), primary_key=True) - name= Column(String()) + id = Column(Integer, primary_key=True) + name = Column(String, nullable=False) + + freebies = relationship('Freebie', backref=backref('dev', lazy=True)) def __repr__(self): return f'' + + def received_one(self, item_name): + return any(freebie.item_name == item_name for freebie in self.freebies) + + def give_away(self, dev, freebie, session): + if freebie.dev == self: + freebie.dev = dev + session.commit() + return True + return False + +class Freebie(Base): + __tablename__ = 'freebies' + + id = Column(Integer, primary_key=True) + item_name = Column(String, nullable=False) + value = Column(Integer, nullable=False) + dev_id = Column(Integer, ForeignKey('devs.id'), nullable=False) + company_id = Column(Integer, ForeignKey('companies.id'), nullable=False) + + def print_details(self): + return f'{self.dev.name} owns a {self.item_name} from {self.company.name}.' + + def __repr__(self): + return f'' + + +# run tis in the terminal to print the sessions +# from models import Company, Dev, Freebie +# from seed import session + +# # Check if data exists +# print(session.query(Company).all()) +# print(session.query(Dev).all()) +# print(session.query(Freebie).all()) diff --git a/lib/seed.py b/lib/seed.py index b16becbbb..c5996d6a4 100644 --- a/lib/seed.py +++ b/lib/seed.py @@ -1,3 +1,38 @@ -#!/usr/bin/env python3 -# Script goes here! + +from models import Company, Dev, Freebie, Base +from sqlalchemy import create_engine +from sqlalchemy.orm import sessionmaker + +# database engine created +engine = create_engine('sqlite:///freebies.db') +Base.metadata.create_all(engine) + + +Session = sessionmaker(bind=engine) +session = Session() + +# instances of Company created +companyX = Company(name="Company X", founding_year=2000) +companyQ = Company(name="Company Q", founding_year=1995) + +# instances of Dev created +dev1 = Dev(name="Dev 1") +dev2 = Dev(name="Dev 2") + +# all the sessions together committed tot the database +session.add_all([companyX, companyQ, dev1, dev2]) +session.commit() + +# Creating instances of Freebie +freebie1 = Freebie(item_name="Laptop", value=1000, dev=dev1, company=companyX) +freebie2 = Freebie(item_name="SSD Disk", value=20, dev=dev2, company=companyQ) + +# Add freebies to the session +session.add_all([freebie1, freebie2]) +session.commit() + +print("Database seeded successfully!") + + +