diff --git a/lib/debug.py b/lib/debug.py index 4f922eb69..23b367467 100644 --- a/lib/debug.py +++ b/lib/debug.py @@ -1,9 +1,15 @@ #!/usr/bin/env python3 from sqlalchemy import create_engine +from sqlalchemy.orm import sessionmaker +from faker import Faker -from models import Company, Dev + +from models import Company, Dev, Freebie, session if __name__ == '__main__': - engine = create_engine('sqlite:///freebies.db') + # engine = create_engine('sqlite:///freebies.db') + # Session = sessionmaker(bind=engine) + # session = Session() + import ipdb; ipdb.set_trace() diff --git a/lib/freebies.db b/lib/freebies.db index 12beb1c96..1cc73484e 100644 Binary files a/lib/freebies.db and b/lib/freebies.db differ diff --git a/lib/migrations/versions/0ce79d4be740_added_freebie_model.py b/lib/migrations/versions/0ce79d4be740_added_freebie_model.py new file mode 100644 index 000000000..712b99464 --- /dev/null +++ b/lib/migrations/versions/0ce79d4be740_added_freebie_model.py @@ -0,0 +1,37 @@ +"""Added Freebie model + +Revision ID: 0ce79d4be740 +Revises: 5f72c58bf48c +Create Date: 2023-10-12 21:50:44.557056 + +""" +from alembic import op +import sqlalchemy as sa + + +# revision identifiers, used by Alembic. +revision = '0ce79d4be740' +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('dev_id', sa.Integer(), nullable=True), + sa.Column('company_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/migrations/versions/9e711ec79c32_add_company_d_evs_association_table.py b/lib/migrations/versions/9e711ec79c32_add_company_d_evs_association_table.py new file mode 100644 index 000000000..6b9f13e4d --- /dev/null +++ b/lib/migrations/versions/9e711ec79c32_add_company_d_evs_association_table.py @@ -0,0 +1,36 @@ +"""Add company_d +evs Association Table + +Revision ID: 9e711ec79c32 +Revises: 0ce79d4be740 +Create Date: 2023-10-13 00:47:44.282790 + +""" +from alembic import op +import sqlalchemy as sa + + +# revision identifiers, used by Alembic. +revision = '9e711ec79c32' +down_revision = '0ce79d4be740' +branch_labels = None +depends_on = None + + +def upgrade() -> None: + # ### commands auto generated by Alembic - please adjust! ### + op.create_table('company_devs', + sa.Column('id', sa.Integer(), nullable=False), + 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_company_devs_company_id_companies')), + sa.ForeignKeyConstraint(['dev_id'], ['devs.id'], name=op.f('fk_company_devs_dev_id_devs')), + sa.PrimaryKeyConstraint('id') + ) + # ### end Alembic commands ### + + +def downgrade() -> None: + # ### commands auto generated by Alembic - please adjust! ### + op.drop_table('company_devs') + # ### end Alembic commands ### diff --git a/lib/models.py b/lib/models.py index 2681bee5a..92d62f6d1 100644 --- a/lib/models.py +++ b/lib/models.py @@ -1,5 +1,5 @@ -from sqlalchemy import ForeignKey, Column, Integer, String, MetaData -from sqlalchemy.orm import relationship, backref +from sqlalchemy import create_engine, ForeignKey, Table, Column, Integer, String, MetaData +from sqlalchemy.orm import relationship, backref, sessionmaker from sqlalchemy.ext.declarative import declarative_base convention = { @@ -9,6 +9,19 @@ Base = declarative_base(metadata=metadata) +engine = create_engine('sqlite:///freebies.db') +Session = sessionmaker(bind=engine) +session = Session() + +company_dev = Table( + 'company_devs', + Base.metadata, + Column('id', Integer(), primary_key=True), + Column('company_id', ForeignKey('companies.id')), + Column('dev_id', ForeignKey('devs.id')), + extend_existing=True, +) + class Company(Base): __tablename__ = 'companies' @@ -16,8 +29,28 @@ class Company(Base): name = Column(String()) founding_year = Column(Integer()) + devs = relationship('Dev', secondary=company_dev, back_populates='companies') + freebies = relationship('Freebie', backref=backref('company')) + def __repr__(self): return f'' + + def give_freebie(self, dev, item_name, value): + if isinstance(dev, Dev): + new_freebie = Freebie( + item_name=item_name, + value=value, + dev_id=dev.id, + company_id=self.id + ) + session.add(new_freebie) + session.commit() + else: + return TypeError("dev must be an instance of the Dev class.") + + @classmethod + def oldest_company(cls): + return session.query(Company).order_by(Company.founding_year).first() class Dev(Base): __tablename__ = 'devs' @@ -25,5 +58,41 @@ class Dev(Base): id = Column(Integer(), primary_key=True) name= Column(String()) + companies = relationship('Company', secondary=company_dev, back_populates='devs') + freebies = relationship('Freebie', backref=backref('dev')) + def __repr__(self): return f'' + + def received_one(self, item_name): + return item_name in [freebie.item_name for freebie in self.freebies] + + def give_away(self, dev, freebie): + if isinstance(freebie, Freebie): + if freebie in self.freebies: + if isinstance(dev, Dev): + freebie.dev = dev + session.add(freebie) + session.commit() + else: + return TypeError("dev must be an instance of the Dev class") + else: + return ValueError(f"The {freebie.item_name} freebie does not belong to {self.name}.") + else: + return TypeError("freebie must be an instance of the Freebie class.") + +class Freebie(Base): + __tablename__ = 'freebies' + + id = Column(Integer(), primary_key=True) + item_name = Column(String()) + value = Column(Integer()) + + dev_id = Column(Integer(), ForeignKey('devs.id')) + company_id = Column(Integer(), ForeignKey('companies.id')) + + def __repr__(self): + return f'' + + def print_details(self): + return f"{self.dev.name} owns a {self.item_name} from {self.company.name}" diff --git a/lib/seed.py b/lib/seed.py index b16becbbb..e6bbbf0ff 100644 --- a/lib/seed.py +++ b/lib/seed.py @@ -1,3 +1,87 @@ #!/usr/bin/env python3 -# Script goes here! +from random import choice as rc +import random + +from sqlalchemy import create_engine +from sqlalchemy.orm import sessionmaker +from faker import Faker + +from models import Company, Dev, Freebie + +engine = create_engine('sqlite:///freebies.db') +Session = sessionmaker(bind=engine) +session = Session() + +fake = Faker() + +swag = ['t-shirt', 'hat', 'water bottle', 'pen', 'sticker', + 'keychain', 'notebook', 'mouse pad', 'yoga mat', 'frisbee', + 'chapstick', 'lanyard', 'tote bag', 'reusable straw set', + 'hoodie', 'koozie', 'mug', 'tumbler', 'beanie', 'socks', + 'sunglasses', 'umbrella', 'yo-yo', 'calendar', 'duffle bag'] + +def create_companies(): + companies = [ + Company( + name = fake.company(), + founding_year = fake.year() + ) + for i in range(20)] + session.add_all(companies) + session.commit() + return companies + +def create_devs(): + devs = [ + Dev( + name = fake.name() + ) + for i in range(100)] + session.add_all(devs) + session.commit() + return devs + +def create_freebies(): + freebies = [ + Freebie( + item_name = random.choice(swag), + value = random.randint(0, 100) + ) + for i in range(300)] + session.add_all(freebies) + session.commit() + return freebies + +def delete_records(): + session.query(Company).delete() + session.query(Dev).delete() + session.query(Freebie).delete() + session.commit() + +def relate_companies_to_devs(companies, devs): + for company in companies: + for i in range(random.randint(1, 10)): + dev = random.choice(devs) + if company not in dev.companies: + dev.companies.append(company) + session.add(dev) + session.commit() + return companies, devs + +def relate_freebies(companies, devs, freebies): + for freebie in freebies: + freebie.company = rc(companies) + freebie.dev = rc(devs) + + session.add_all(freebies) + session.commit() + return companies, devs, freebies + +if __name__ == '__main__': + delete_records() + companies = create_companies() + devs = create_devs() + freebies = create_freebies() + companies, devs = relate_companies_to_devs(companies, devs) + companies, devs, freebies = relate_freebies(companies, devs, freebies)