Chapter 8

Chapter07_Factory_Pattern/Projects/Salome_Papashvili/src/models/product.py

@@ -1,5 +1,6 @@
 from src.ext import db
-class Tour(db.Model):
+from src.models.base import BaseModel
+class Tour(BaseModel):
     __tablename__ = "tours"
     id = db.Column(db.Integer, primary_key=True)
     country = db.Column(db.String)

Chapter08_User/Projects/Readme.md

@@ -2,5 +2,6 @@
 
 მაგალითი:
 - სახელი გვარი | [პროექტი](/მისამართი)
+- სალომე პაპაშვილი |  [GlobeTales](/Chapter08_User/Projects/Salome_Papashvili/app.py)
 
 ### 2025 ზაფხული

Chapter08_User/Projects/Salome_Papashvili/app.py

@@ -0,0 +1,5 @@
+from src import create_app
+app = create_app()
+
+if __name__ == "__main__":
+    app.run(debug=True)

Chapter08_User/Projects/Salome_Papashvili/migrations/README

@@ -0,0 +1 @@
+Single-database configuration for Flask.

Chapter08_User/Projects/Salome_Papashvili/migrations/alembic.ini

@@ -0,0 +1,50 @@
+# A generic, single database configuration.
+
+[alembic]
+# template used to generate migration files
+# file_template = %%(rev)s_%%(slug)s
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic,flask_migrate
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[logger_flask_migrate]
+level = INFO
+handlers =
+qualname = flask_migrate
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S

Chapter08_User/Projects/Salome_Papashvili/migrations/env.py

@@ -0,0 +1,113 @@
+import logging
+from logging.config import fileConfig
+
+from flask import current_app
+
+from alembic import context
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+fileConfig(config.config_file_name)
+logger = logging.getLogger('alembic.env')
+
+
+def get_engine():
+    try:
+        # this works with Flask-SQLAlchemy<3 and Alchemical
+        return current_app.extensions['migrate'].db.get_engine()
+    except (TypeError, AttributeError):
+        # this works with Flask-SQLAlchemy>=3
+        return current_app.extensions['migrate'].db.engine
+
+
+def get_engine_url():
+    try:
+        return get_engine().url.render_as_string(hide_password=False).replace(
+            '%', '%%')
+    except AttributeError:
+        return str(get_engine().url).replace('%', '%%')
+
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+config.set_main_option('sqlalchemy.url', get_engine_url())
+target_db = current_app.extensions['migrate'].db
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def get_metadata():
+    if hasattr(target_db, 'metadatas'):
+        return target_db.metadatas[None]
+    return target_db.metadata
+
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url, target_metadata=get_metadata(), literal_binds=True
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online():
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+
+    # this callback is used to prevent an auto-migration from being generated
+    # when there are no changes to the schema
+    # reference: http://alembic.zzzcomputing.com/en/latest/cookbook.html
+    def process_revision_directives(context, revision, directives):
+        if getattr(config.cmd_opts, 'autogenerate', False):
+            script = directives[0]
+            if script.upgrade_ops.is_empty():
+                directives[:] = []
+                logger.info('No changes in schema detected.')
+
+    conf_args = current_app.extensions['migrate'].configure_args
+    if conf_args.get("process_revision_directives") is None:
+        conf_args["process_revision_directives"] = process_revision_directives
+
+    connectable = get_engine()
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection,
+            target_metadata=get_metadata(),
+            **conf_args
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

Chapter08_User/Projects/Salome_Papashvili/migrations/script.py.mako

@@ -0,0 +1,24 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade():
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade():
+    ${downgrades if downgrades else "pass"}

Chapter08_User/Projects/Salome_Papashvili/prod-requirements.txt

@@ -0,0 +1,6 @@
+Flask==3.1.0
+Flask-Login==0.6.3
+Flask-Migrate==4.1.0
+Flask-SQLAlchemy==3.1.1
+Flask-WTF==1.2.2
+uwsgi

Chapter08_User/Projects/Salome_Papashvili/src/__init__.py

@@ -0,0 +1,34 @@
+from flask import Flask
+from src.commands import init_db, populate_db
+from src.config import Config
+from src.ext import db, migrate, login_manager
+from src.views import main_blueprint, auth_blueprint, product_blueprint
+from src.models import User
+BLUEPRINTS = [main_blueprint, product_blueprint, auth_blueprint]
+COMMANDS = [init_db, populate_db]
+
+def create_app():
+    app = Flask(__name__)
+    app.config.from_object(Config)
+
+    register_extensions(app)
+    register_blueprints(app)
+    register_commands(app)
+    return app
+
+def register_extensions(app):
+    db.init_app(app)
+    migrate.init_app(app, db)
+    login_manager.init_app(app)
+    login_manager.login_view = 'auth.login'
+    @login_manager.user_loader
+    def load_user(_id):
+        return User.query.get(_id)
+
+def register_blueprints(app):
+    for blueprint in BLUEPRINTS:
+        app.register_blueprint(blueprint)
+
+def register_commands(app):
+    for command in COMMANDS:
+        app.cli.add_command(command)

Chapter08_User/Projects/Salome_Papashvili/src/commands.py

@@ -0,0 +1,83 @@
+from flask.cli import with_appcontext
+import click
+from src.ext import db
+from src.models import Tour, User
+
+@click.command("init_db")
+@with_appcontext
+def init_db():
+    click.echo("Initializing database...")
+    db.drop_all()
+    db.create_all()
+    click.echo("Initialized database")
+
+
+@click.command("populate_db")
+@with_appcontext
+def populate_db():
+    tours = [
+        {
+            "id": 0,
+            "country": "Italy",
+            "title": "Rome Ancient Wonders Tour",
+            "description": "Discover the Colosseum, Roman Forum, and Vatican City.",
+            "price": 279.99,
+            "currency": "EUR",
+            "image": "https://www.agoda.com/wp-content/uploads/2024/08/Colosseum-Rome-Featured.jpg",
+            "duration": "4 days",
+        },
+        {
+            "id": 1,
+            "country": "Egypt",
+            "title": "Cairo & Pyramids Adventure",
+            "description": "Visit the Great Pyramids of Giza and the Egyptian Museum.",
+            "price": 349.99,
+            "currency": "USD",
+            "image": "https://upload.wikimedia.org/wikipedia/commons/a/af/All_Gizah_Pyramids.jpg",
+            "duration": "5 days",
+        },
+        {
+            "id": 2,
+            "country": "Australia",
+            "title": "Sydney & Blue Mountains",
+            "description": "Explore Sydney Opera House, Harbour Bridge, and Blue Mountains.",
+            "price": 499.99,
+            "currency": "AUD",
+            "image": "https://www.sydneytravelguide.com.au/wp-content/uploads/2024/09/sydney-australia.jpg",
+            "duration": "6 days",
+        },
+        {
+            "id": 3,
+            "country": "Spain",
+            "title": "Barcelona",
+            "description": "Admire Sagrada Familia, Park Güell, and Gothic Quarter.",
+            "price": 259.99,
+            "currency": "EUR",
+            "image": "https://www.introducingbarcelona.com/f/espana/barcelona/barcelona.jpg",
+            "duration": "3 days",
+        },
+        {
+            "id": 4,
+            "country": "Turkey",
+            "title": "Istanbul Heritage Tour",
+            "description": "Visit Hagia Sophia, Blue Mosque, and Grand Bazaar.",
+            "price": 199.99,
+            "currency": "USD",
+            "image": "https://deih43ym53wif.cloudfront.net/small_cappadocia-turkey-shutterstock_1320608780_9fc0781106.jpeg",
+            "duration": "4 days",
+        }
+    ]
+
+    for tour in tours:
+        new_tour = Tour(country=tour["country"],
+                        title=tour["title"],
+                        description=tour["description"],
+                        price=tour["price"],
+                        currency=tour["currency"],
+                        image=tour["image"],
+                        duration=tour["duration"])
+        db.session.add(new_tour)
+    db.session.commit()
+
+    # Admin
+    User(username="Admin", password="password12345", profile_image="admin.png", role="Admin").create()

Chapter08_User/Projects/Salome_Papashvili/src/config.py

@@ -0,0 +1,7 @@
+from os import path
+
+class Config(object):
+    BASE_DIRECTORY = path.abspath(path.dirname(__file__))
+    SQLALCHEMY_DATABASE_URI = "sqlite:///database.db"
+    SECRET_KEY = "GJFKLDJKljklhhjkhjk@595jijkjd"
+    UPLOAD_PATH = path.join(BASE_DIRECTORY, "static", "upload")

Chapter08_User/Projects/Salome_Papashvili/src/ext.py

@@ -0,0 +1,6 @@
+from flask_sqlalchemy import SQLAlchemy
+from flask_migrate import Migrate
+from flask_login import LoginManager
+db = SQLAlchemy()
+migrate = Migrate()
+login_manager = LoginManager()

Chapter08_User/Projects/Salome_Papashvili/src/models/__init__.py

@@ -0,0 +1,3 @@
+from src.models.product import Tour
+from src.models.person import Person
+from src.models.user import User

Chapter08_User/Projects/Salome_Papashvili/src/models/base.py

@@ -0,0 +1,16 @@
+from src.ext import db
+
+class BaseModel(db.Model):
+    __abstract__ = True
+    def create(self, commit=True):
+        db.session.add(self)
+        if commit:
+            self.save()
+
+    def save(self):
+        db.session.commit()
+
+    def delete(self, commit=True):
+        db.session.delete(self)
+        if commit:
+            self.save()

Chapter08_User/Projects/Salome_Papashvili/src/models/person.py

@@ -0,0 +1,13 @@
+from src.ext import db
+from src.models.base import BaseModel
+class Person(BaseModel):
+    __tablename__ = "persons"
+
+    id = db.Column(db.Integer, primary_key=True)
+    username = db.Column(db.String, nullable=False)
+    email = db.Column(db.String, nullable=False, unique=True)
+    password = db.Column(db.String, nullable=False)
+    birthday = db.Column(db.Date, nullable=False)
+    gender = db.Column(db.String, nullable=False)
+    country = db.Column(db.String, nullable=False)
+    profile_image = db.Column(db.String)