From e4e30fae58c41a332e8f763eeec1a3e1b2e955e4 Mon Sep 17 00:00:00 2001 From: Robins Date: Wed, 20 Mar 2024 07:43:42 +0300 Subject: [PATCH] Completed Assignment --- lib/debug.py | 5 +- lib/freebies.db | Bin 20480 -> 24576 bytes .../15d30a0bbf93_add_freebie_table.py | 37 +++++++++++++ lib/models.py | 50 +++++++++++++++++- lib/seed.py | 31 +++++++++++ 5 files changed, 120 insertions(+), 3 deletions(-) create mode 100644 lib/migrations/versions/15d30a0bbf93_add_freebie_table.py diff --git a/lib/debug.py b/lib/debug.py index 4f922eb69..9f661d26b 100644 --- a/lib/debug.py +++ b/lib/debug.py @@ -2,8 +2,9 @@ from sqlalchemy import create_engine -from models import Company, Dev +from models import Company, Dev, Freebie if __name__ == '__main__': engine = create_engine('sqlite:///freebies.db') - import ipdb; ipdb.set_trace() + import ipdb + ipdb.set_trace() diff --git a/lib/freebies.db b/lib/freebies.db index 12beb1c963e832db481e7a7493e3029e691ac4dc..2b1b553fbef5f7278467fc535c904786a080bc12 100644 GIT binary patch delta 522 zcmZozz}Rqrae}lU7Xt$W8xX?)%S0VxaV`eEa4%l|9}KKKyBPR+`FHZw^GWgS+SusA zW6~7M$}TP|%h<|Wl9-f}npTvWnv|JZ45QhcgIpa$TopnboqSvsprVr<`DC0jOHy;= z^AdAY6~Y{YoIMvdsLYY8!DY*Fuxq7<$DR{d^Y9JJ7Dg?Q@xdyrVIlBfc zK!ibxH8N8)@mK(KhB43`@jx2YV2Jxr3Wae}lUD+2=q2*UvLL>*&MRtCLzSzi7h3@m(74E((OJNfGQq&5o*EaTlQ e#dk}P$285{DB08^Db2(pd6U8yeiVU41_}T{Q53rX diff --git a/lib/migrations/versions/15d30a0bbf93_add_freebie_table.py b/lib/migrations/versions/15d30a0bbf93_add_freebie_table.py new file mode 100644 index 000000000..1cd188328 --- /dev/null +++ b/lib/migrations/versions/15d30a0bbf93_add_freebie_table.py @@ -0,0 +1,37 @@ +"""add freebie table + +Revision ID: 15d30a0bbf93 +Revises: 5f72c58bf48c +Create Date: 2024-03-20 06:01:36.538906 + +""" +from alembic import op +import sqlalchemy as sa + + +# revision identifiers, used by Alembic. +revision = '15d30a0bbf93' +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..e97c46711 100644 --- a/lib/models.py +++ b/lib/models.py @@ -9,6 +9,7 @@ Base = declarative_base(metadata=metadata) + class Company(Base): __tablename__ = 'companies' @@ -16,14 +17,61 @@ class Company(Base): name = Column(String()) founding_year = Column(Integer()) + freebies = relationship("Freebie", backref="company") + + devs = relationship("Dev", secondary="freebies", backref="company") + def __repr__(self): return f'' + def give_freebie(self, dev, item_name, value): + freebie = Freebie(item_name=item_name, value=value, + dev=dev, company=self) + return 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()) + name = Column(String()) + + freebies = relationship("Freebie", backref="dev") + + companies = relationship("Company", secondary="freebies", backref="dev") def __repr__(self): return f'' + + def received_one(self, item_name): + for freebie in self.freebies: + if freebie.item_name == item_name: + return True + return False + + def give_away(self, dev, freebie): + if freebie.dev == self: + freebie.dev = dev + return True + return False + + +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')) + + company = relationship("Company", backref="freebies") + dev = relationship("Dev", backref="freebies") + + def __repr__(self): + return f'' diff --git a/lib/seed.py b/lib/seed.py index b16becbbb..e7c3e2fbd 100644 --- a/lib/seed.py +++ b/lib/seed.py @@ -1,3 +1,34 @@ #!/usr/bin/env python3 # Script goes here! + +from sqlalchemy import create_engine +from sqlalchemy.orm import sessionmaker +from models import Base, Company, Dev, Freebie + +engine = create_engine('sqlite:///freebies.db') + +Base.metadata.bind = engine + +DBSession = sessionmaker(bind=engine) +session = DBSession() + +if 'session' not in locals(): + session = DBSession() + +# creating an instance of freebie +freebie1 = Freebie(item_name="keyboard", value=10) +freebie2 = Freebie(item_name="mouse", value=20) + +company = session.query(Company).filter_by(id=1).first() +dev = session.query(Dev).filter_by(id=1).first() + +# associating company and dev +freebie1.company = company +freebie2.dev = dev + +session.add(freebie1) +session.add(freebie2) + +session.commit() +session.close()