Chapter09 Admin Task

Chapter08_User/Projects/Nino_Tsiklauri/uwsgi.conf

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+[uwsgi]
+master = true
+module = src:create_app()
+processes = 4
+threads = 8
+socket = :5000
+chmod-socket = 600
+die-on-term = true
+vacuum = true

Chapter08_User/Projects/Readme.md

@@ -2,5 +2,6 @@
 
 მაგალითი:
 - სახელი გვარი | [პროექტი](/მისამართი)
+- ნინო წიკლაური | [Book Shop](/Chapter08_User/Projects/Nino_Tsiklauri/app.py)
 
 ### 2025 ზაფხული

Chapter09_Admin/Projects/Nino_Tsiklauri/app.py

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+from src import create_app
+
+app = create_app()
+
+if __name__ == "__main__":
+    app.run(debug=True)

Chapter09_Admin/Projects/Nino_Tsiklauri/migrations/README

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+Single-database configuration for Flask.

Chapter09_Admin/Projects/Nino_Tsiklauri/migrations/alembic.ini

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+# 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

Chapter09_Admin/Projects/Nino_Tsiklauri/migrations/env.py

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+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()

Chapter09_Admin/Projects/Nino_Tsiklauri/migrations/script.py.mako

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+"""${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"}

Chapter09_Admin/Projects/Nino_Tsiklauri/migrations/versions/32b86fbcd47b_added_ragint_to_movies.py

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+"""Added ragint to Movies
+
+Revision ID: 32b86fbcd47b
+Revises: 
+Create Date: 2025-05-31 20:51:33.043357
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '32b86fbcd47b'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('movies', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('rating', sa.Float(), nullable=True))
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('movies', schema=None) as batch_op:
+        batch_op.drop_column('rating')
+
+    # ### end Alembic commands ###

Chapter09_Admin/Projects/Nino_Tsiklauri/migrations/versions/5b5008085981_added_users_table.py

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+"""Added Users table
+
+Revision ID: 5b5008085981
+Revises: 32b86fbcd47b
+Create Date: 2025-06-01 20:57:15.373884
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '5b5008085981'
+down_revision = '32b86fbcd47b'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('users',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('username', sa.String(), nullable=True),
+    sa.Column('password', sa.String(), nullable=True),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('username')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('users')
+    # ### end Alembic commands ###

Chapter09_Admin/Projects/Nino_Tsiklauri/src/__init__.py

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+from flask import Flask
+from flask_admin.menu import MenuLink
+
+from src.config import Config
+from src.ext import db, migrate, login_manager, admin
+from src.views import main_blueprint, auth_blueprint, product_blueprint
+from src.commands import init_db, populate_db
+from src.models import User, Product
+from src.admin_views.base import SecureModelView
+from src.admin_views import UserView, ProductView
+
+BLUEPRINTS = [main_blueprint, auth_blueprint, product_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):
+    # Flask-SQLAlchemy
+    db.init_app(app)
+
+    # Flask-Migrate
+    migrate.init_app(app, db)
+
+    # Flask-Login
+    login_manager.init_app(app)
+    login_manager.login_view = 'auth.login'
+
+    @login_manager.user_loader
+    def load_user(_id):
+        return User.query.get(_id)
+
+    # Flask-Admin
+    admin.init_app(app)
+    admin.add_view(UserView(User, db.session))
+    admin.add_view(ProductView(Product, db.session))
+
+    admin.add_link(MenuLink("To Site", url="/", icon_type="fa", icon_value="fa-sign-out"))
+
+
+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)

Chapter09_Admin/Projects/Nino_Tsiklauri/src/admin_views/__init__.py

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+from src.admin_views.user import UserView
+from src.admin_views.product import ProductView

Chapter09_Admin/Projects/Nino_Tsiklauri/src/admin_views/base.py

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+from flask_admin.contrib.sqla import ModelView
+from flask_admin import AdminIndexView
+from flask_login import current_user
+from flask import redirect, url_for
+
+class SecureModelView(ModelView):
+    def is_accessible(self):
+        return current_user.is_authenticated and current_user.is_admin()
+
+
+    def inaccessible_callback(self, name, **kwargs):
+        if not self.is_accessible():
+            return redirect(url_for("auth.login"))
+
+
+class SecureIndexView(AdminIndexView):
+    def is_accessible(self):
+        return current_user.is_authenticated and current_user.is_admin()
+
+
+    def inaccessible_callback(self, name, **kwargs):
+        if not self.is_accessible():
+            return redirect(url_for("auth.login"))