class StoreModel(db.Model):
__tablename__ = 'stores'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
items = db.relationship('ItemModel', lazy='dynamic')
# a nice explanation for lazy='dynamic': https://www.jianshu.com/p/8427da16729a
# when lazy='dynamic', self.items is no longer a list of items, it becomes a query builder
# it need .all() to execute the query
def __init__(self, name):
self.name = name
def json(self):
return {
"id": self.id,
"name": self.name,
"items": [item.json() for item in self.items.all()]
}
@classmethod
def find_by_name(cls, name):
return cls.query.filter_by(name=name).first()
# SELECT * FROM items WHERE name = name LIMIT 1
@classmethod
def find_all(cls):
return cls.query.all()
def save_to_db(self):
db.session.add(self)
db.session.commit()
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
class ItemModel(db.Model):
__tablename__ = 'items'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
price = db.Column(db.Float(precision=2))
store_id = db.Column(db.Integer, db.ForeignKey('stores.id'))
store = db.relationship('StoreModel')
def __init__(self, name, price, store_id):
self.name = name
self.price = price
self.store_id = store_id
def json(self):
return {
'id': self.id,
'name': self.name,
'price': self.price,
'store_id': self.store_id
}
@classmethod
def find_by_name(cls, name):
return cls.query.filter_by(name=name).first()
@classmethod
def find_all(cls):
return cls.query.all()
def save_to_db(self):
db.session.add(self)
db.session.commit()
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
class InstrumentModel(BaseModel):
__tablename__ = 'instrument'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(250), nullable=False, unique=True)
description = db.Column(db.String(512))
model = db.Column(db.String(80))
status = db.Column(db.String(80), default='unpaired')
pairing_code = db.Column(db.String(80), unique=True)
created_at_utc = db.Column(db.DateTime,
nullable=False,
default=datetime.utcnow())
clinic_id = db.Column(db.Integer,
db.ForeignKey('clinic.id'),
nullable=False)
clinic = db.relationship('ClinicModel',
backref='InstrumentModel',
lazy=True)
@classmethod
def find_by_name(cls, name):
"""Find the model by name"""
return cls.query.filter_by(name=name).first()
@staticmethod
def parent_id_exists(path_id):
"""Check if clinic with id=path_id exists in the DB"""
if not ClinicModel.find_by_id(path_id):
raise ValidationError(
'Clinic with id={} does not exist.'.format(path_id))
def set_parent_id(self, parent_id):
self.clinic_id = parent_id
@classmethod
def get_from_db(cls, parent_field=None, parent_id=None, self_id=None):
return super().get_from_db(cls.clinic_id, parent_id, self_id)
class ItemModel(db.Model):
__tablename__ = 'items' # defining the table name used in this resource
# which attribute of the table is to be used, must be same as the instance variables
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
price = db.Column(db.Float(precision=2))
store_id = db.Column(db.Integer, db.ForeignKey('stores.id'))
store = db.relationship('StoreModel')
def __init__(self, name, price, store_id):
self.name = name
self.price = price
self.store_id = store_id
# return the item object in JSON format
def json(self):
return {
'name': self.name,
'price': self.price,
'store_id': self.store_id
}
# gets the row from the DB and returns it in ItemModel object format
@classmethod
def get_by_name(cls, name):
return cls.query.filter_by(name=name).first()
# adds itself to the DB
def save_to_db(self):
db.session.add(self)
db.session.commit()
# Deletes itself from the DB
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
class ItemModel(db.Model):
__tablename__ = 'items'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
price = db.Column(db.Float(precision=2))
store_id = db.Column(db.Integer, db.ForeignKey(
'stores.id')) #gets the id from the id field in the stores table
store = db.relationship(
'StoreModel'
) # item property that lets sql that each item is related to only one store. many to one
# it sets a property that shows which store in the Store table the store_id is attached to
def __init__(self, name, price, store_id):
self.name = name
self.price = price
self.store_id = store_id
def json(self):
return {
'name': self.name,
'price': self.price
} #return json version of the item model
@classmethod
def find_by_name(cls, name):
return cls.query.filter_by(
name=name).first() # SELECT * FROM items WHERE name=name LIMIT 1
def save_to_db(self):
db.session.add(self)
db.session.commit()
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
class User(Bot, db.Model):
__tablename__ = 'users'
__table_args__ = (db.UniqueConstraint('psid', 'id', name='unique_user_orders'),
)
id = db.Column(db.Integer, primary_key=True)
psid = db.Column(db.String, unique=True)
name = db.Column(db.String(80))
phone_number = db.Column(db.String)
address = db.Column(db.String)
orders = db.relationship('Order', backref='user', lazy='dynamic')
def __init__(self, psid):
super().__init__()
self.psid = psid
self.name = ''
self.phone_number = 0
self.address = ''
@classmethod
def find_by_psid(cls, psid):
return cls.query.filter_by(psid=psid).first()
def get_info(self):
request_endpoint = '{}/{}'.format(self.graph_url, self.psid)
response = requests.get(
request_endpoint,
params=self.auth_args
)
result = response.json()
self.name = result['first_name']
def save(self):
db.session.add(self)
db.session.commit()
def remove(self):
db.session.remove(self)
db.session.commit()
class ItemModel(db.Model):
__tablename__ = 'items'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
price = db.Column(db.Float(precision=2))
store_id = db.Column(db.Integer, db.ForeignKey('stores.id'))
store = db.relationship('StoreModel')
def __init__(self, name, price, store_id):
self.name = name
self.price = price
self.store_id = store_id
def json(self):
return {'name': self.name, 'price': self.price}
#talking to db to find the given name record
#since the method is used before creating this object, so we use classmethod
@classmethod
def find_by_name(cls, name):
return cls.query.filter_by(
name=name).first() #SELECT * FROM items WHERE name = name
@classmethod
def find_all(cls):
return cls.query
#Insert into db by the given item(name,price)
def save_to_db(self):
db.session.add(self)
db.session.commit()
#Update the item with given name to price
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
class Lecture(db.Model):
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(50))
description = db.Column(db.String(500))
day = db.Column(db.Integer)
start_time = db.Column(db.String(5))
end_time = db.Column(db.String(5))
speaker_id = db.Column(db.Integer, db.ForeignKey('speaker.id'))
speaker = db.relationship('Speaker', backref=db.backref('lecture'))
def __init__(self, id_, speaker_id, title, description, day, start_time,
end_time):
self.id = id_
self.speaker_id = speaker_id
self.title = title
self.description = description
self.day = day
self.start_time = start_time
self.end_time = end_time
def __str__(self):
return 'Lecture #{}: {}'.format(self.id, self.title)
def to_dict(self):
return {
'id': self.id,
'title': self.title,
'description': self.description,
'speaker_id': self.speaker_id,
'day': self.day,
'start_time': self.start_time,
'end_time': self.end_time
}
@staticmethod
def get(id_=None):
return _lectures if id_ is None else Lecture.query.filter_by(
id=id_).first()
class ItemModel(db.Model):
__tablename__ = 'items'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
price = db.Column(db.Float(precision=2))
store_id = db.Column(db.Integer, db.ForeignKey('stores.id'))
# List of items - Many to One
store = db.relationship('StoreModel')
def __init__(self, name, price, store_id):
self.name = name
self.price = price
self.store_id = store_id
def json(self):
return {'name': self.name, 'price': self.price}
@classmethod
def find_by_name(cls, name):
return ItemModel.query.filter_by(name=name).first()
def save_to_db(self):
# SQL alchemy add to database
db.session.add(self)
db.session.commit()
# Delete our item
def delete_from_db(self, name):
db.session.delete(self)
db.session.commit()
#Print
def __str__(self):
return 'name : {} \nprice: {}'.format(self.name, self.price)
class ItemModel(db.Model):
__tablename__ = "items"
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
price = db.Column(db.Float(precision=2))
store_id = db.Column(db.Integer, db.ForeignKey("stores.id"))
store = db.relationship("StoreModel")
def __init__(self, name, price, store_id):
self.name = name
self.price = price
self.store_id = store_id
def json(self):
return {"name": self.name, "price": self.price}
@classmethod
def find_by_name(cls, name):
return cls.query.filter_by(name=name).first() # SELECT * FROM items WHERE name=name LIMIT 1
def save_to_db(self):
db.session.add(self)
db.session.commit()
# connection = sqlite3.connect("data.db")
# cursor = connection.cursor()
# query = "INSERT INTO items VALUES (?, ?)"
# cursor.execute(query, (self.name, self.price))
# connection.commit()
# connection.close()
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
class PasswordRecoveryRequestModel(db.Model):
__tablename__ = "password_recovery_request"
id = db.Column(db.String(50), primary_key=True)
expire_at = db.Column(db.Integer, nullable=False)
change_made = db.Column(db.Boolean, nullable=False, default=False)
user_id = db.Column(db.Integer, db.ForeignKey("user.id"), nullable=False)
user = db.relationship("UserModel")
def __init__(self, user_id: int, **kwargs):
super().__init__(**kwargs)
self.id = uuid4().hex
self.expire_at = int(
time()) + PASSWORD_RECOVERY_REQUEST_EXPIRATION_DELTA
self.user_id = user_id
@classmethod
def find_by_id(cls, _id) -> "PasswordRecoveryRequestModel":
return cls.query.filter_by(id=_id).first()
@property
def expired(self) -> bool:
return time() > self.expire_at
def force_to_expire(self):
if not self.expired:
self.expire_at = int(time())
self.save_to_db()
def save_to_db(self):
db.session.add(self)
db.session.commit()
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
class ConfirmationModel(db.Model):
__tablename__ = "confirmations"
id = db.Column(db.String(50), primary_key=True)
expire_at = db.Column(db.Integer, nullable=False)
confirmed = db.Column(db.Boolean, nullable=False)
user_id = db.Column(db.Integer, db.ForeignKey("users.id"), nullable=False)
user = db.relationship("UserModel")
def __init__(self, user_id: int, **kwargs):
super().__init__(**kwargs)
self.user_id = user_id
self.id = uuid4().hex
self.expire_at = int(time()) + int(
os.environ.get("CONFIRMATION_EXPIRATION_DELTA")
)
self.confirmed = False
@classmethod
def find_by_id(cls, id: str) -> "ConfirmationModel":
return cls.query.filter_by(id=id).first()
@property
def expired(self) -> bool:
return time() > self.expire_at
def forced_to_expire(self) -> None:
if not self.expired:
self.expire_at = time()
self.save_to_db()
def save_to_db(self):
db.session.add(self)
db.session.commit()
def delete_from_db(self):
db.session.remove(self)
db.session.commit()
class CarrierModel(db.Model):
__tablename__ = 'carriers'
id = db.Column(db.Integer, primary_key=True)
carriername = db.Column(db.String(25))
carrierdomain = db.Column(db.String(25))
usercarrier = db.relationship('UserModel',
backref='carrier',
lazy='dynamic',
foreign_keys='UserModel.carrierid')
def __init__(self, carriername, carrierdomain):
self.carriername = carriername
self.carrierdomain = carrierdomain
def json(self):
return {
"id": self.id,
"carriername": self.carriername,
"carrierdomain": self.carrierdomain
}
def save_to_db(self):
db.session.add(self)
db.session.commit()
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
@classmethod
def find_by_id(cls, _id):
return cls.query.filter_by(id=_id).first()
@classmethod
def find_by_name(cls, name):
return cls.query.filter_by(carriername=name).first()
class CustModel(db.Model):
__tablename__ = 'cust'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
pos = db.relationship('PoModel', lazy='dynamic')
def __init__(self, name):
self.name = name
def json_t(self):
return {
'name': self.name,
'pos': [item.json() for item in self.items.all()]
}
@classmethod
def find_by_name(cls, name):
# conn = sqlite3.connect('tb.db')
# cursor = conn.cursor()
# query = "select * from items where name = ?"
# results = cursor.execute(query, (name,))
# row = results.fetchone()
# conn.close()
#
# if row:
# return cls(*row)
return cls.query.filter_by(name=name).first()
def save_to_db(self):
db.session.add(self)
db.session.commit()
def del_from_db(self):
db.delete(self)
db.session.commit()
class ItemModel(db.Model):
__tablename__ = 'items'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
price = db.Column(db.Float(precision=2))
store_id = db.Column(db.Integer, db.ForeignKey('stores.id'))
store = db.relationship('StoreModel')
def __init__(self, name, price, store_id):
self.name = name
self.price = price
self.store_id = store_id
def to_json(self):
"""Return a json representation of the object."""
return {'id': self.id,
'name': self.name,
'price': self.price,
'store_id': self.store_id
}
@classmethod
def find_by_name(cls, name):
return cls.query.filter_by(name=name).first() # 'SELECT * FROM items WHERE name=name LIMIT 1'
@classmethod
def find_all(cls):
return cls.query.all()
def save_to_db(self):
"""Upsert (update or insert) data into db."""
db.session.add(self) # 'INSERT INTO items VALUES (?, ?)' 'UPDATE items SET price=? WHERE name=?'
db.session.commit()
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
class IngredientModel(db.Model):
__tablename__ = 'ingredients'
id = db.Column(db.Integer,primary_key=True)
name = db.Column(db.String(50))
amount = db.Column(db.Float(precision=2))
measurement = db.Column(db.String(20))
recipe_id = db.Column(db.Integer,db.ForeignKey('recipes.id'))
recipe = db.relationship('RecipeModel')
def __init__(self,name,amount,measurement,recipe_id):
self.name = name
self.amount = amount
self.measurement = measurement
self.recipe_id = recipe_id
def json(self):
return {
'id' : self.id,
'name': self.name,
'amount' : self.amount,
'measurement' = self.measurement
}
def save_to_db(self):
db.session.add(self)
db.session.commit()
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
def find_by_id(cls , _id):
return cls.query.filter_by(id=_id).first()
def find_by_recipe(cls, recipe_id):
return cls.query.filter_by(recipe_id=recipe_id)
class FAQModel(db.Model):
__tablename__ = 'faq'
id = db.Column(db.Integer, unique=True, primary_key=True)
category = db.relationship('CategoryModel', secondary=category, backref=db.backref('faq', lazy='dynamic'))
question = db.Column(db.String(30), unique=False, nullable=False)
answer = db.Column(db.String(30), unique=False, nullable=False)
def __init__(self, faq_category,question, answer):
self.question = question
self.answer = answer
self.category.append(faq_category)
def json(self):
categor = [cat.json() for cat in self.category]
return {
"id": self.id,
"category": categor,
"question": self.question,
"answer": self.answer,
}
def save_to_db(self):
db.session.add(self)
db.session.commit()
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
@classmethod
def find_by_id(cls, idd):
return FAQModel.query.filter_by(id=idd).first()
@classmethod
def get_faqs(cls):
list_faq = [faq.json() for faq in FAQModel.query.all()]
dicc = {"FAQ": list_faq}
return dicc
class ItemModel(db.Model):
__tablename__ = 'items'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
price = db.Column(db.Float(precision=2))
store_id = db.Column(db.Integer, db.ForeignKey('stores.id'))
store = db.relationship('StoreModel')
def __init__(self, name, price, store_id):
self.name = name
self.price = price
self.store_id = store_id
def json(self):
return {'name': self.name, 'price': self.price}
@classmethod
def find_item_by_name(cls, name):
return cls.query.filter_by(name=name).first()
def save_to_db(self):
db.session.add(self)
db.session.commit()
# def update(self):
# connection = sqlite3.connect('data.db')
# cursor = connection.cursor()
# query = 'UPDATE items SET price = ? WHERE name = ?'
# cursor.execute(query, (self.price, self.name))
# connection.commit()
# connection.close()
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
db.session.commit()
class TagModel(db.Model):
__tablename__ = "tags"
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(120))
article = db.relationship('ArticleTagModel')
def __init__(self, name):
self.name = name.lower()
def json(self):
return {"id": self.id, "name": self.name }
@classmethod
def find_by_id(cls,_id):
return cls.query.filter_by(id=_id).first()
@classmethod
def search_by_name(cls,name):
return cls.query.filter(cls.name.like('%' + name + '%'))
@classmethod
def exists(cls,name):
query = cls.query.filter_by(name=name).first()
return bool(query)
@classmethod
def get_all_tags(cls,tags):
return cls.query.filter(cls.id.in_(tags))
def save(self):
db.session.add(self)
db.session.commit()
def delete(self):
db.session.delete(self)
db.session.commit()
class ItemModel(db.Model):
__tablename__ = "items"
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80), unique=True)
price = db.Column(db.Float(precision=2))
store_id = db.Column(db.Integer, db.ForeignKey("stores.id"))
stores = db.relationship("StoreModel")
def __init__(self, name: str, price: float, store_id: int):
self.name = name
self.price = price
self.store_id = store_id
def json(self) -> ItemJSON:
return {
"id": self.id,
"name": self.name,
"price": self.price,
"store_id": self.store_id,
}
@classmethod
def find_by_name(cls, name: str) -> "ItemModel":
return cls.query.filter_by(name=name).first()
@classmethod
def find_all(cls) -> List["ItemModel"]:
return cls.query.all()
def save_to_db(self) -> None:
db.session.add(self)
db.session.commit()
def delete_from_db(self) -> None:
db.session.delete(self)
db.session.commit()
class ConfirmationModel(db.Model):
__tablename__ = "confirmations"
id = db.Column(db.String(50), primary_key=True)
expire_at = db.Column(db.Integer, nullable=False)
confirmed = db.Column(db.Boolean, nullable=False)
user_id = db.Column(db.Integer, db.ForeignKey("users.id"), nullable=False)
user = db.relationship("UserModel")
def __init__(self, user_id: int, **kwargs):
# Initializes expire_at, confirmed, user_id
super().__init__(**kwargs)
self.user_id = user_id
self.id = uuid4().hex
self.expire_at = int(time()) + CONFIRMATION_EXPIRATION_DELTA
self.confirmed = False
@classmethod
def find_by_id(cls, _id: str) -> "ConfirmationModel":
return cls.query.filter_by(id=_id).first()
@property
def expired(self):
return time(
) > self.expire_at # current time > time ago + confirmation delta
def force_to_expire(self):
if not self.expired:
self.expire_at = int(time())
self.save_to_db()
def save_to_db(self):
db.session.add(self)
db.session.commit()
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
class ItemModel(db.Model): #Extends db.Model
__tablename__ = "items"
id = db.Column(db.Integer , primary_key = True )
name = db.Column( db.String(80) )
price = db.Column( db.Float(precision=2) ) #precision is places after decimal point
store_id = db.Column( db.Integer , db.ForeignKey('stores.id')) #Item has a foreign key which is 'Store' primary key!
store = db.relationship('StoreModel') #This is a 'JOIN' between items and store tables
#Now each 'ItemModel' has a property called 'store'
#that is a 'StoreModel' type that matches the store_id^
def __init__(self , name , price , store_id):
self.name = name
self.price = price
self.store_id = store_id
def json(self): #Returns JSON representation of 'ItemModel'
return {'name' : self.name , 'price' : self.price }
@classmethod
def find_by_name( cls , name ):
return cls.query.filter_by(name=name).first() #SELECT * FROM iterms WHERE name = name
#No need to connect or have a cursor ... ItemModel.query belongs to db.Model, and
#filter_by will filter a Model by name.
#You can also continue to filter: filter_by(...).filter_by(...).
#.first() does a LIMIT 1
#The query is essentially a SQL command
def save_to_db(self):
print("Item is {0}: ".format(self.name))
db.session.add(self) #'session' belonds to db and it is a collection of objects we add to.
db.session.commit() #Note: SQLAlchemy will do an 'update' it actually updates. (upserting)
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
class ItemModel(db.Model):
__tablename__ = 'items'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
price = db.Column(db.Float(precision=2))
store_id = db.Column(db.Integer, db.ForeignKey('store.id'))
store = db.relationship(
'StoreModel') #maps the item to the respective store
#in the storemodel table
def __init__(self, name, price, store_id):
self.name = name
self.price = price
self.store_id = store_id
def json(self):
return {'name': self.name, 'price': self.price}
#we will still use a class method in this since we have to return a class object
#through this funtion as opposed to a dictionary
@classmethod
def find_by_name(cls, name):
return cls.query.filter_by(name=name).first()
#return items model object representing the data
#since we have made a class with the instances variable we dont need a classmethod
def save_to_db(self):
db.session.add(self)
db.session.commit()
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
class UserModel(db.Model):
__tablename__ = "users"
id = db.Column(db.String(50), primary_key=True)
playerId = db.Column(db.String(9), unique=True)
username = db.Column(db.String(36), unique=True)
ip = db.Column(db.String(50), nullable=True)
created_at = db.Column(db.TIMESTAMP(), default=datetime.datetime.utcnow)
updated_at = db.Column(db.TIMESTAMP(), default=datetime.datetime.utcnow)
last_online = db.Column(db.TIMESTAMP(), default=datetime.datetime.utcnow)
settings = db.relationship(
"UserSettingsModel", lazy="joined", cascade="all, delete-orphan"
)
@classmethod
def find_by_id(cls, _id: str) -> "UserModel":
return cls.query.filter_by(id=_id).first()
@classmethod
def find_by_playerId(cls, playerId: str) -> "UserModel":
return cls.query.filter_by(playerId=playerId).first()
@classmethod
def find_by_username(cls, username: str) -> "UserModel":
return cls.query.filter_by(username=username).first()
@staticmethod
def get_new_PlayerId():
return (random.sample(random.choice(string.ascii_uppercase), 3) +
random.sample(range(0, 10), 6))
def save_to_db(self) -> None:
db.session.add(self)
db.session.commit()
def delete_from_db(self) -> None:
db.session.delete(self)
db.session.commit()
class StoreModel(db.Model):
__tablename__ = 'stores'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
#För att välja antalet decimaler använd "precision"
#skapar upp en "flera till en"-relation med ItemModel och därav en lista av "ItemModels"
#läs på om "lazy". Har något med avvägningen av hastighet vid skapande och sökande av i tabeller
items = db.relationship('ItemModel', lazy='dynamic')
def __init__(self, name):
self.name = name
#.all är kopplat till "lazy=dynamic".
def json(self):
return {
'name': self.name,
'items': [item.json() for item in self.items.all()]
}
@classmethod
def find_by_name(cls, name):
#query kommer från SQLAlchemy som vi enkelt bygger querys med.
#return ItemModel.query.filter_by(name=name) #SELECT * FROM items WHERE name=name
#return ItemModel.query.filter_by(name=name).filter_by(id=1) #filterar på flera värden
#return ItemModel.query.filter_by(name=name, id=1) #filterar på flera argument
return cls.query.filter_by(name=name).first(
) # SELECT * FROM items WHERE name=name LIMIT 1, returnerar den första raden.
def save_to_db(self):
#Session är alla objekt i denna sessionen som vi skall skriva till databasen
db.session.add(self)
db.session.commit()
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
class StoreModel(db.Model):
__tablename__ = 'stores'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
items = db.relationship(
'ItemModel', lazy='dynamic'
) # it Allow the store table to see items table and we use lazy= 'dynamic' To prevent it from creating a file for each item that has a stored id. It will take up space
def __init__(self, name):
self.name = name
def json(self):
return {
"id": self.id,
"name": self.name,
"items": [
item.json() for item in self.items.all()
], #Because i use lazy= 'dynamic' i can use self.items as a query but it will go to table every time and it will be slowe
}
@classmethod
def find_item_by_name(cls, name):
return cls.query.filter_by(
name=name).first() # SELECT * FROM items WHERE name = name LIMIT 1
@classmethod
def find_all(cls):
return cls.query.all()
def save_to_db(self):
db.session.add(self)
db.session.commit()
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
class StoreModel(db.Model):
__tablename__ = 'stores'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
items = db.relationship('ItemModel', lazy='dynamic')
def __init__(self, name):
self.name = name
def json(self):
return {'name': self.name, 'items': [item.json() for item in self.items.all()]}
@classmethod
def find_by_name(cls, name):
#return Item Model object
return cls.query.filter_by(name=name).first() # Select * from items where name=name
#or
#return ItemModel.query.filter_by(name=name).first() # Select * from items where name=name
#insert and update both can be acheived by this method
#@classmethod
def save_to_db(self):
db.session.add(self)
db.session.commit()
# @classmethod
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
class BrandModel(db.Model):
__tablename__ = 'brands'
id = db.Column(db.Integer, primary_key=True)
name = db.column(db.string(80))
description = db.column(db.string(80))
created_at = db.Column(db.DateTime, nullable=False,
default=datetime.utcnow)
updated_at = db.Column(db.DateTime, nullable=False,
default=datetime.utcnow)
branches = db.relationship('BranchModel', lazy='dynamic')
def __init__(self, name, description, created_at, updated_at):
self.firstname = name
self.lastname = description
self.created_at = created_at
self.updated_at = updated_at
def json(self):
return {'name': self.name, }
@classmethod
def find_by_name(cls, name):
return cls.query.filter_by(name=name).first()
@classmethod
def find_by_id(cls, _id):
return cls.query.filter_by(id=_id).first()
def save_to_db(self):
db.session.add(self)
db.session.commit()
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
class ItemModel(db.Model):
__tablename__ = 'items'
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(100))
description = db.Column(db.String(400))
link = db.Column(db.String(100))
image_link = db.Column(db.String(200))
store_id = db.Column(db.Integer, db.ForeignKey('stores.id'))
store = db.relationship('StoreModel')
def __init__(self, title, description, link, image_link, store_id):
self.title = title
self.description = description
self.link = link
self.image_link = image_link
self.store_id = store_id
def json(self):
return {
'title ': self.title,
'description': self.description,
'link': self.link,
'image_link': self.image_link
}
@classmethod
def find_by_title(cls, title):
return cls.query.filter_by(title=title).first()
def save_to_db(self):
db.session.add(self)
db.session.commit()
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
class StoreModel(db.Model):
__tablename__ = "stores"
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80)) # max name size is 80 char
# item = db.relationship('ItemModel') #this says there is a relationship between Storemodel and itemmodel
# this is a many to one relationship so
# item is a list of items
# and it will be created an object for every item in the Store
# to reduce the amount of memory used we will use
items = db.relationship("ItemModel", lazy="dynamic")
def __init__(self, name):
self.name = name
def json(self):
return {
"name": self.name,
"items": [item.json() for item in self.items.all()],
} # .all transform self.items in a query builder insted of a list and .all retrieves all the items in that table
# this will make this method slower (it's a trade off.. previous version will have store creation slower)
@classmethod
def find_by_name(cls, name):
# using sql alchemy to make queries
return cls.query.filter_by(name=name).first(
) # same as Select * from items where name= name LIMIT 1
# is returning an object
def save_to_db(self):
db.session.add(self)
db.session.commit()
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
