From 44830bb45dff9b239b0d11d47e7e44bda31bae65 Mon Sep 17 00:00:00 2001 From: Newton Manyisa Date: Mon, 3 Mar 2025 00:35:53 +0300 Subject: [PATCH] finished freebies code challenge --- lib/freebies.db => freebies.db | Bin 20480 -> 16384 bytes lib/debug.py | 45 ++++++++++-- .../versions/7a71dbf71c64_create_db.py | 30 ++++---- lib/models.py | 68 +++++++++++++++--- lib/seed.py | 39 +++++++++- 5 files changed, 154 insertions(+), 28 deletions(-) rename lib/freebies.db => freebies.db (74%) diff --git a/lib/freebies.db b/freebies.db similarity index 74% rename from lib/freebies.db rename to freebies.db index 12beb1c963e832db481e7a7493e3029e691ac4dc..7de22c03cb1b8824902f24c9606bc9ea7f629718 100644 GIT binary patch literal 16384 zcmeI$L2uJA6bEqI>DIN<7Lb@K4prZ=l@Jne42R=MqL!GO{+GmwBv^O zbX@oXZpN1H2mPTJoMlbFvKucA`-oo1BdYqHTAYR1vYfVU zLCPCt6OuH>xHukLewQ4e6BU|oDTUw@cXu9Sf+bt4vlWqi;+IO)awfACi z9H3b1iF|2$o1Z_O9zh&Au3Cyd$tRONQ+!#cSUWHCe5q357lmoKc{1~kNCln`-*V`g z(Yu4wpyLN0+%x5kZanwD^Na81LjTJ2@6itm1Rwwb2tWV=5P$##AOHafKmYfR zs|Yjsq(cY!&pN+8@HYP?x&L1={g-~Vf`1SxLjVF0fB*y_009U<00Izz00bbgB(Nbg zR;sHBJ>KAddXJL(|0UCZ=$A{&@dyD3KmY;|fB*y_009U<00Izzz$ysb73-|bId_~o Y)&23wJt4OEI=e3lg{C(Q2Se@KZ!nMKga7~l literal 20480 zcmeI&O^ee&7{KwFzF1pn<7FubvU6Ezs0i-5xEH}#f-cssn~lPrLYhn^*d%LT7ClM* zR(>mw9!*MiX#;!kCgneLnrEhT=9yn|d1x=rhtWc-Nji)Dg*p-sg_PozQbLG&(X-3C zRkQb65$6}V5#JTo#Z&Kb+xR1DokzlG8^1a~vVevF0tg_000IagfB*srAn+dv1hqzY zZ%?kwg+HF^P+!mUULQEN<=V=%UJq@R&!}Fj8HMU}TKj zvYf$N%gM(doYVJ~bE)3hm#P?X}SvN2_&+waSt&2={ZRLA2e@UHc29;HcXSlP;~^kJS~@ii}5#y1GP zqeF8`XmB>Va2+edQ>7KWt1p4t0^3+GlY3dY*FEn`5hbDiHvc-!s(8;|F4FbbD=+q} zG?CZx_w$FXopova7TJr200IagfB*srAb 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!") + + +