From 4c6c99e2a0e9196b10a9120ea351212a81487115 Mon Sep 17 00:00:00 2001 From: Arnold Mwangakala Date: Fri, 21 Mar 2025 11:42:23 +0300 Subject: [PATCH] Completed Challenge --- lib/database.py | 12 +++++ lib/debug.py | 3 +- lib/freebies.db | Bin 20480 -> 24576 bytes .../be8e47ce7709_create_freebies_table.py | 35 ++++++++++++ lib/models.py | 50 +++++++++++++++++- lib/seed.py | 19 +++++++ 6 files changed, 116 insertions(+), 3 deletions(-) create mode 100644 lib/database.py create mode 100644 lib/migrations/versions/be8e47ce7709_create_freebies_table.py diff --git a/lib/database.py b/lib/database.py new file mode 100644 index 000000000..71d3b39f6 --- /dev/null +++ b/lib/database.py @@ -0,0 +1,12 @@ +from sqlalchemy import create_engine +from sqlalchemy.ext.declarative import declarative_base +from sqlalchemy.orm import sessionmaker + +DATABASE_URL = "sqlite:///freebies.db" + +engine = create_engine(DATABASE_URL, echo=True) +Session = sessionmaker(bind=engine) + +session = Session() + +Base = declarative_base() diff --git a/lib/debug.py b/lib/debug.py index 4f922eb69..27b23bf98 100644 --- a/lib/debug.py +++ b/lib/debug.py @@ -1,8 +1,9 @@ #!/usr/bin/env python3 +from database import session, Base 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') diff --git a/lib/freebies.db b/lib/freebies.db index 12beb1c963e832db481e7a7493e3029e691ac4dc..41c7bda429249a3d990045b0d87cfff81c2a1308 100644 GIT binary patch delta 885 zcmaKrO=uHA7=~y6W_Lr9Z-Yv(KXeWr8mOXeC3@V%X{^Q#Y_=9pF+USsnsj9w1D;YP z-j$-~f|p#ig4I*;DB?kHB7)#qMMOM0YqD)O2N#BK_j%v%o0l1Ob6eQl6CO;a5(pv8 zSNO;e=N8flbZYfd0{$Q+K0uIwm&smoB0hL}cRs#&&r{U&^t5pQOs86Fv8K;h&1D;5 z#d({W4keD6D^fC|TV`^~aXYMCS+BMkxoX<^i>6Jil0&SOVsVbd^lr6vn~`P9p#>UM z>R$U+b^T7oZG>{*Z?G;WTi=sYz2GxnvdWHa@_y1>tAt@H2fd?Lo|G(=Y`R>q$YpwM z_P~%KHeI4Nweqw~hBz?Kx{b_#HsCQ9c#aCM(ZR!fk)i)Q!Ms>zXCnDA6|b>#Y%yDB z+3e}_&&V%0aTo*_qd_0RPxt~K;59slC-4aRJ1L_DJ3K z!SimknEDRzxU58Ed0dtvvN$dahh?7Z7>~A#;5U4OukZ=p!yDLxT^?;4YFLxdk(^i4 zR0*ZcmRn~SkBG8Qnr6Px!}897BjTKA_(P@P8aV2~*ifP#MKR>4 YN0tp~K5CLALyVe4k>8*Z{#QZ$3soiHh5!Hn delta 120 zcmZoTz}T>Wae}lUD+2=q2*UvLL>*&MRtCLzSzi7h3@m(74E((OJNfGQq&5o*EaTlQ r#dk}P$285{DB08^Db2(pd6U8yej#K5UXW1&K-Ks8Cr*%NL*)VhkJ1_o diff --git a/lib/migrations/versions/be8e47ce7709_create_freebies_table.py b/lib/migrations/versions/be8e47ce7709_create_freebies_table.py new file mode 100644 index 000000000..ba00974e2 --- /dev/null +++ b/lib/migrations/versions/be8e47ce7709_create_freebies_table.py @@ -0,0 +1,35 @@ +"""Create freebies table + +Revision ID: be8e47ce7709 +Revises: 5f72c58bf48c +Create Date: 2025-03-21 10:33:46.430254 + +""" +from alembic import op +import sqlalchemy as sa + + +# revision identifiers, used by Alembic. +revision = 'be8e47ce7709' +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, primary_key=True), + sa.Column('item_name', sa.String, nullable=False), + sa.Column('value', sa.Integer, nullable=False), + sa.Column('company_id', sa.Integer, sa.ForeignKey('companies.id')), + sa.Column('dev_id', sa.Integer, sa.ForeignKey('devs.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..03b7d1dec 100644 --- a/lib/models.py +++ b/lib/models.py @@ -1,3 +1,4 @@ +from database import session, Base from sqlalchemy import ForeignKey, Column, Integer, String, MetaData from sqlalchemy.orm import relationship, backref from sqlalchemy.ext.declarative import declarative_base @@ -13,11 +14,26 @@ class Company(Base): __tablename__ = 'companies' id = Column(Integer(), primary_key=True) - name = Column(String()) - founding_year = Column(Integer()) + name = Column(String(), nullable=False) + founding_year = Column(Integer(), nullable=False) + + freebies = relationship("Freebie", back_populates="company") def __repr__(self): return f'' + + @property + def devs(self): + return {freebie.dev for freebie in self.freebies} + + @classmethod + def oldest_company(cls, session): + return session.query(cls).order_by(cls.founding_year).first() + + def give_freebie(self, dev, item_name, value, session): + freebie = Freebie(item_name=item_name, value=value, company=self, dev=dev) + session.add(freebie) + session.commit() class Dev(Base): __tablename__ = 'devs' @@ -25,5 +41,35 @@ class Dev(Base): id = Column(Integer(), primary_key=True) name= Column(String()) + freebies = relationship("Freebie", back_populates="dev") + def __repr__(self): return f'' + + @property + def companies(self): + return {freebie.company for freebie in self.freebies} + + 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() + +class Freebie(Base): + __tablename__ = 'freebies' + + id = Column(Integer, primary_key=True) + item_name = Column(String, nullable=False) + value = Column(Integer, nullable=False) + + company_id = Column(Integer, ForeignKey('companies.id')) + dev_id = Column(Integer, ForeignKey('devs.id')) + + company = relationship("Company", back_populates="freebies") + dev = relationship("Dev", back_populates="freebies") + + 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..256140fc5 100644 --- a/lib/seed.py +++ b/lib/seed.py @@ -1,3 +1,22 @@ #!/usr/bin/env python3 # Script goes here! +from models import Company, Dev, Freebie +from database import Session + +session = Session() + +google = Company(name="Google", founding_year=1998) +microsoft = Company(name="Microsoft", founding_year=1975) + +alice = Dev(name="Alice") +bob = Dev(name="Bob") + +tshirt = Freebie(item_name="T-Shirt", value=20, company=google, dev=alice) +sticker = Freebie(item_name="Sticker", value=5, company=microsoft, dev=bob) + +session.add_all([google, microsoft, alice, bob, tshirt, sticker]) +session.commit() + +print("Database seeded successfully!") +