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models.py
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import os
from sqlalchemy import Column, String, Integer, create_engine, Date, Float
from flask_sqlalchemy import SQLAlchemy
import json
from datetime import date
from config import DATABASE_URL, DATABASE_TRACK_MODIFICATIONS
database_path = os.environ.get('DATABASE_URL', DATABASE_URL)
db = SQLAlchemy()
def setup_db(app, database_path=database_path):
app.config["SQLALCHEMY_DATABASE_URI"] = database_path
app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False
db.app = app
db.init_app(app)
db.create_all()
def db_drop_and_create_all():
db.drop_all()
db.create_all()
db_init_records()
def db_init_records():
new_actor = (Actor(name='John', gender='Male', age=25))
new_movie = (Movie(title = 'To the rescue', release_date = date.today()))
new_performance = Performance.insert().values(Movie_id = new_movie.id, Actor_id = new_actor.id, actor_fee = 500.00 )
new_actor.insert()
new_movie.insert()
db.session.execute(new_performance)
db.session.commit()
Performance = db.Table('Performance', db.Model.metadata,
db.Column('Movie_id', db.Integer, db.ForeignKey('movies.id')),
db.Column('Actor_id', db.Integer, db.ForeignKey('actors.id')),
db.Column('actor_fee', db.Float)
)
'''
Actor
'''
class Actor(db.Model):
__tablename__ = 'actors'
id = Column(Integer, primary_key=True)
name = Column(String)
gender = Column(String)
age = Column(Integer)
def __init__(self, name, gender, age):
self.name = name
self.gender = gender
self.age = age
def insert(self):
db.session.add(self)
db.session.commit()
def update(self):
db.session.commit()
def delete(self):
db.session.delete(self)
db.session.commit()
@property
def format(self):
return {
'id': self.id,
'name' : self.name,
'gender': self.gender,
'age': self.age
}
'''
Movie
'''
class Movie(db.Model):
__tablename__ = 'movies'
id = Column(Integer, primary_key=True)
title = Column(String)
release_date = Column(Date)
actors = db.relationship('Actor', secondary=Performance, backref=db.backref('performances', lazy='joined'))
def __init__(self, title, release_date) :
self.title = title
self.release_date = release_date
def insert(self):
db.session.add(self)
db.session.commit()
def update(self):
db.session.commit()
def delete(self):
db.session.delete(self)
db.session.commit()
@property
def format(self):
return {
'id': self.id,
'title' : self.title,
'release_date': self.release_date
}