common.py

from flask import Flask
from flask_session import Session
from flask_sqlalchemy import SQLAlchemy
from flask_login import LoginManager

# init SQLAlchemy so we can use it later in our models
db = SQLAlchemy()


def create_app():
    app = Flask(__name__)

    app.config['SECRET_KEY'] = '!GFJK^&%645fuvsw5E#$'
    app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///db.sqlite'
    app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
    app.config["SESSION_PERMANENT"] = False
    app.config["SESSION_TYPE"] = "filesystem"
    Session(app)

    db.init_app(app)

    login_manager = LoginManager()
    login_manager.login_view = 'auth.login'
    login_manager.init_app(app)

    from models import User

    @login_manager.user_loader
    def load_user(user_id):
        # since the user_id is just the primary key of our user table, use it in the query for the user
        return User.query.get(int(user_id))

    # blueprint for auth routes in our app
    from auth import auth_blueprint
    app.register_blueprint(auth_blueprint)

    # blueprint for non-auth parts of app
    from main import main_blueprint
    app.register_blueprint(main_blueprint)

    # blueprint for restaurant
    from restaurant_apis import restaurant_apis_blueprint
    app.register_blueprint(restaurant_apis_blueprint)

    # blueprint for restaurant
    from restaurant import restaurant_blueprint
    app.register_blueprint(restaurant_blueprint)

    return app