diff --git a/lib/debug.py b/lib/debug.py index 4f922eb69..a7aaaec7f 100644 --- a/lib/debug.py +++ b/lib/debug.py @@ -1,9 +1,18 @@ #!/usr/bin/env python3 from sqlalchemy import create_engine - -from models import Company, Dev +from sqlalchemy.orm import sessionmaker +from models import Company, Dev, Freebie if __name__ == '__main__': engine = create_engine('sqlite:///freebies.db') + Session = sessionmaker(bind=engine) + session = Session() + + dev1 = session.query(Dev).first() + dev = session.query(Dev).limit(2).all() + dev2 = dev[1] + company1 = session.query(Company).first() + freebie1 = session.query(Freebie).first() + import ipdb; ipdb.set_trace() diff --git a/lib/freebies.db b/lib/freebies.db index 12beb1c96..f1029a1f1 100644 Binary files a/lib/freebies.db and b/lib/freebies.db differ diff --git a/lib/migrations/versions/9d72ee6a18e7_create_freebie_table.py b/lib/migrations/versions/9d72ee6a18e7_create_freebie_table.py new file mode 100644 index 000000000..2f6ceaee2 --- /dev/null +++ b/lib/migrations/versions/9d72ee6a18e7_create_freebie_table.py @@ -0,0 +1,37 @@ +"""Create Freebie Table + +Revision ID: 9d72ee6a18e7 +Revises: 5f72c58bf48c +Create Date: 2023-06-28 16:36:25.979377 + +""" +from alembic import op +import sqlalchemy as sa + + +# revision identifiers, used by Alembic. +revision = '9d72ee6a18e7' +down_revision = '5f72c58bf48c' +branch_labels = None +depends_on = None + + +def upgrade() -> None: + # ### commands auto generated by Alembic - please adjust! ### + op.create_table('freebies', + sa.Column('id', sa.Integer(), nullable=False), + sa.Column('item_name', sa.String(), nullable=True), + sa.Column('value', sa.Integer(), nullable=True), + sa.Column('company_id', sa.Integer(), nullable=True), + sa.Column('dev_id', sa.Integer(), nullable=True), + sa.ForeignKeyConstraint(['company_id'], ['companies.id'], name=op.f('fk_freebies_company_id_companies')), + sa.ForeignKeyConstraint(['dev_id'], ['devs.id'], name=op.f('fk_freebies_dev_id_devs')), + sa.PrimaryKeyConstraint('id') + ) + # ### end Alembic commands ### + + +def downgrade() -> None: + # ### commands auto generated by Alembic - please adjust! ### + op.drop_table('freebies') + # ### end Alembic commands ### diff --git a/lib/models.py b/lib/models.py index 2681bee5a..4b98bef0e 100644 --- a/lib/models.py +++ b/lib/models.py @@ -1,5 +1,6 @@ from sqlalchemy import ForeignKey, Column, Integer, String, MetaData -from sqlalchemy.orm import relationship, backref +from sqlalchemy.orm import relationship +from sqlalchemy.ext.associationproxy import association_proxy from sqlalchemy.ext.declarative import declarative_base convention = { @@ -16,8 +17,20 @@ class Company(Base): name = Column(String()) founding_year = Column(Integer()) + freebies = relationship('Freebie', backref='company') + devs = association_proxy('freebies', 'dev', + creator=lambda dev: Freebie(dev=dev)) + + def give_freebie(self, dev, item_name, value): + return Freebie(item_name=item_name, value=value, company_id=self.id, dev_id=dev.id) + + @classmethod + def oldest_company(cls, session): + oldest_company = session.query(cls).order_by(cls.founding_year.asc()).first() + return oldest_company + def __repr__(self): - return f'' + return f'' class Dev(Base): __tablename__ = 'devs' @@ -25,5 +38,33 @@ class Dev(Base): id = Column(Integer(), primary_key=True) name= Column(String()) + freebies = relationship('Freebie', backref='dev') + companies = association_proxy('freebies', 'company', + creator=lambda comp: Freebie(comp=comp)) + + def received_one(self, item_name): + return bool([freebie for freebie in self.freebies if freebie.item_name == item_name]) + + def give_away(self, dev, freebie): + if freebie in self.freebies: + freebie.dev_id = dev.id + return dev.freebies + def __repr__(self): return f'' + +class Freebie(Base): + __tablename__ = 'freebies' + + id = Column(Integer(), primary_key=True) + item_name = Column(String()) + value = Column(Integer()) + + company_id = Column(Integer(), ForeignKey('companies.id')) + dev_id = Column(Integer(), ForeignKey('devs.id')) + + def print_details(self): + return print(f'{self.dev.name} owns a {self.item_name} from {self.company.name}.') + + def __repr__(self): + return f'Freebie(Item: {self.item_name}, Value: {self.value}, Company ID: {self.company_id}, Dev ID: {self.dev_id})' diff --git a/lib/seed.py b/lib/seed.py index b16becbbb..47b384a9c 100644 --- a/lib/seed.py +++ b/lib/seed.py @@ -1,3 +1,65 @@ #!/usr/bin/env python3 - +from models import Company, Dev, Freebie +from sqlalchemy.orm import sessionmaker +from sqlalchemy import create_engine +from faker import Faker +import random # Script goes here! + +engine = create_engine('sqlite:///freebies.db') +Session = sessionmaker(bind=engine) +session = Session() + +fake = Faker() + +def create_company(): + companies = [ + Company( + name=fake.company(), + founding_year=fake.random_int(min=1900, max=2021) + ) for i in range(100)] + session.add_all(companies) + session.commit() + return companies + +def create_dev(): + devs = [ + Dev(name=fake.name()) + for i in range(100) + ] + session.add_all(devs) + session.commit() + return devs + +def create_freebie(): + freebies = [ + Freebie(item_name=fake.word(), + value=random.randint(1,30), + ) for i in range(300)] + session.add_all(freebies) + session.commit() + return freebies + +def delete_tables(): + session.query(Company).delete() + session.query(Dev).delete() + session.query(Freebie).delete() + session.commit() + +def relate_one_to_many(companies, freebies, devs): + for freebie in freebies: + freebie.dev = random.choice(devs) + freebie.company = random.choice(companies) + + session.add_all(freebies) + session.commit() + return companies, freebies, devs + +if __name__ == "__main__": + session.close() + delete_tables() + companies = create_company() + freebies = create_freebie() + devs = create_dev() + companies, freebies, devs = relate_one_to_many(companies, freebies, devs) +