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models.py
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#importing the necessary modules
import os
from flask_sqlalchemy import SQLAlchemy
from flask import Flask
from werkzeug.security import generate_password_hash, check_password_hash
from flask_login import UserMixin
from itsdangerous import TimedSerializer as Serializer
from flask import current_app
from datetime import datetime
import hashlib
from flask import request
#database configuration
basedir = os.path.abspath(os.path.dirname(__file__))
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] =\
'sqlite:///' + os.path.join(basedir, 'data.sqlite')
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
db = SQLAlchemy(app)
#Defining the permissions that a user/admin will have
class Permission:
WRITE = 4
MODERATE = 8
ADMIN = 16
#-----------------------------CLASS User--------------------------------------
class User(UserMixin, db.Model):
__tablename__ = 'users'
user_id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(64), index=True)
username=db.Column(db.String(64))
email=db.Column(db.String(128), index=True)
yearOfStudy= db.Column(db.String(11), index=True)
regNumber = db.Column(db.String(64), index=True)
phoneNumber = db.Column(db.Integer, unique=True, index=True)
password=db.Column(db.String(128), index=True)
#Password hashing in the User Model
password_hash = db.Column(db.String(128))
confirmed = db.Column(db.Boolean, default=False)
avatar_hash = db.Column(db.String(32))
role = db.Column(db.String(20), default = "User")
secQuestion = db.Column(db.Text)
secAnswer = db.Column(db.Text)
commodity = db.relationship('Commodity', backref='author', lazy='dynamic')
goodsAdded = db.relationship('goodsCart', backref='purchaser', lazy='dynamic')
goodsPurchased = db.relationship('goodsPurchased', backref='purchaserer', lazy='dynamic')
pendingIssues = db.relationship('Pending', backref='issues', lazy='dynamic')
idss = db.relationship('Dashboard', backref='iss', lazy='dynamic')
idss2 = db.relationship('goodsPending', backref='iss2', lazy='dynamic')
def __repr__(self):
return '<User %r>' % self.username
@property
def password(self):
raise AttributeError('password is not a readable attribute')
@password.setter
def password(self, password):
self.password_hash = generate_password_hash(password)
def verify_password(self, password):
return check_password_hash(self.password_hash, password)
#-----------Gravatar URL generation------------------------------------------
if self.email is not None and self.avatar_hash is None:
self.avatar_hash = self.gravatar_hash()
def gravatar_hash(self):
return hashlib.md5(self.email.lower().encode('utf-8')).hexdigest()
def gravatar(self, size=100, default='identicon', rating='g'):
if request.is_secure:
url = 'https://secure.gravatar.com/avatar'
else:
url = 'http://www.gravatar.com/avatar'
hash = self.avatar_hash or self.gravatar_hash()
return '{url}/{hash}?s={size}&d={default}&r={rating}'.format(
url=url, hash=hash, size=size, default=default, rating=rating)
#-----------------------------------------------------------------------------------------
#--evaluating whether a user has a given permission(copied to __init__.py)---------------------
def can(self, perm):
return self.role is not None and self.role.has_permission(perm)
def is_administrator(self):
return self.can(Permission.ADMIN)
def gravatar(self, size=100, default='identicon', rating='g'):
url = 'https://secure.gravatar.com/avatar'
hash = hashlib.md5(self.email.lower().encode('utf-8')).hexdigest()
return '{url}/{hash}?s={size}&d={default}&r={rating}'.format(
url=url, hash=hash, size=size, default=default, rating=rating)
#------------------------------------------------------------------------
#---------------Commodity Model---------------------------------------------
class Commodity(db.Model):
__tablename__ = 'commodity'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.Text)
type = db.Column(db.String(64))
manDate = db.Column(db.String(64))
expDate = db.Column(db.String(64))
quantity = db.Column(db.Integer)
oldPrice = db.Column(db.Integer)
discPrice = db.Column(db.Integer)
percDiscount = db.Column(db.Integer)
timestamp = db.Column(db.DateTime, index=True, default=datetime.utcnow)
inStock = db.Column(db.String(5), default = "Yes")
author1 = db.Column(db.Text, db.ForeignKey('users.name'))
addDesc = db.Column(db.Text, nullable = True)
#----------------------------------------------------------------------------
#-----------------goodsCart Model------------------------------------------
class goodsCart(db.Model):
__tablename__ = 'goodsCart'
id = db.Column(db.Integer, primary_key=True, unique = True)
name = db.Column(db.Text)
type = db.Column(db.String(64))
manDate = db.Column(db.String(64))
expDate = db.Column(db.String(64))
reqQuantity = db.Column(db.Integer)
price = db.Column(db.Integer)
percDiscount = db.Column(db.Integer)
timestamp = db.Column(db.DateTime, index=True, default=datetime.utcnow)
added = db.Column(db.Boolean, default=True)
buyer = db.Column(db.Integer, db.ForeignKey('users.name'))
seller = db.Column(db.Text)
#-----------------------------------------------------------------------------
#-------------goodsPurchased Model--------------------------------------------
class goodsPurchased(db.Model):
__tablename__ = 'goodsPurchased'
id = db.Column(db.Integer, primary_key=True, unique = True)
name = db.Column(db.Text)
type = db.Column(db.String(64))
manDate = db.Column(db.String(64))
expDate = db.Column(db.String(64))
reqQuantity = db.Column(db.Integer)
price = db.Column(db.Integer)
percDiscount = db.Column(db.Integer)
timestamp = db.Column(db.DateTime, index=True, default=datetime.utcnow)
bought = db.Column(db.Boolean, default=True)
claimed = db.Column(db.Boolean, default=False)
buyer = db.Column(db.Integer, db.ForeignKey('users.name'))
seller = db.Column(db.Text)
#-----------------------------------------------------------------------------
#-------------Pending Model---------------------------------------------------
class Pending(db.Model):
__tablename__='pending'
id = db.Column(db.Integer, primary_key=True, unique = True)
name = db.Column(db.Text)
username = db.Column(db.Text)
issue = db.Column(db.Text)
timestamp = db.Column(db.DateTime, index=True, default=datetime.utcnow)
author_id = db.Column(db.Integer, db.ForeignKey('users.user_id'))
#----------------------------------------------------------------------------
#-----------Class for uploading pictures-------------------------------------
class Img(db.Model):
__tablename__='images'
id=db.Column(db.Integer, primary_key=True, index=True)
img = db.Column(db.Text, nullable=True)
mimetype = db.Column(db.Text, nullable = False)
timestamp = db.Column(db.DateTime, default = datetime.utcnow)
commsID = db.Column(db.Integer)
commID = db.Column(db.Integer, db.ForeignKey('goodspending.id'))
#data=db.Column(db.LargeBinary)
#----------------------------------------------------------------------------
#----------Class for dashboard messages--------------------------------------
class Dashboard(db.Model):
__tablename__='dashboard'
id = db.Column(db.Integer, primary_key=True, index=True)
name = db.Column(db.String(50))
sender = db.Column(db.String(50), default="Admin")
timestamp = db.Column(db.DateTime, index=True, default=datetime.utcnow)
message = db.Column(db.Text)
use_id = db.Column(db.Integer, db.ForeignKey('users.user_id'))
#----------------------------------------------------------------------------
#---------------CommodityPending Model---------------------------------------------
class goodsPending(db.Model):
__tablename__ = 'goodspending'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.Text)
type = db.Column(db.String(64))
manDate = db.Column(db.String(64))
expDate = db.Column(db.String(64))
quantity = db.Column(db.Integer)
oldPrice = db.Column(db.Integer)
discPrice = db.Column(db.Integer)
percDiscount = db.Column(db.Integer)
timestamp = db.Column(db.DateTime, index=True, default=datetime.utcnow)
inStock = db.Column(db.String(5), default = "Yes")
author2 = db.Column(db.Integer, db.ForeignKey('users.name'))
addDesc = db.Column(db.Text, nullable = True)
ids = db.relationship('Img', backref='isess', lazy='dynamic')
#----------------------------------------------------------------------------