service-food-tracker 🐶

All commands

Setup database

[!NOTE] >

Install docker compose and start PostgreSQL

Ubuntu (click here)

sudo apt install docker-compose

Windows (click here)

choco install docker-compose

Mac (click here)

brew install docker-compose

After installed docker-compose:

docker-compose up -d

This command will launch a postgres container configured to run the application database.

Virtual enviroment

[!NOTE] >

Install python venv

Ubuntu (click here)

sudo apt install python3.12-venv

Install dependencies and Activate virtual enviroment

python3 -m venv .venv
source .venv/bin/activate
npm i
pip install -r requirements.txt

Windows

pip install virtualenv

Install dependencies and Activate virtual enviroment

python -m venv .venv
.\.venv\Scripts\Activate
npm i
pip install -r requirementsWindows.txt

Mac

brew install python@3.12

Install dependencies and Activate virtual enviroment

python3 -m venv .venv
source .venv/bin/activate
npm i
pip install -r requirements.txt

Important

To configure other requirements and dependencies run this:

npm install

Alembic

[!NOTE] >

Alembic init

alembic init alembic

[!NOTE] >

Set database URI inside of alembic.ini file

sqlalchemy.url = postgresql://postgres:password@localhost/foodtracker

Important

After you set alembic, go to the alembic directory and paste in the file env.py this:

from logging.config import fileConfig

from sqlalchemy import engine_from_config
from sqlalchemy import pool

from alembic import context

from dotenv import load_dotenv
import os
from src.database.models import Base

load_dotenv()
#Configure environment variables
database_url = os.getenv('DATABASE_URL')
print(database_url)
if not database_url:
   raise ValueError("DATABASE_URL não encontrada no arquivo .env")

# this is the Alembic Config object, which provides
# access to the values within the .ini file in use.
config = context.config
config.set_main_option("sqlalchemy.url", database_url)


# Interpret the config file for Python logging.
# This line sets up loggers basically.
if config.config_file_name is not None:
    fileConfig(config.config_file_name)

# add your model's MetaData object here
# for 'autogenerate' support
# from myapp import mymodel
# target_metadata = mymodel.Base.metadata
target_metadata = Base.metadata

# 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 run_migrations_offline() -> None:
    """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=target_metadata,
        literal_binds=True,
        dialect_opts={"paramstyle": "named"},
    )

    with context.begin_transaction():
        context.run_migrations()


def run_migrations_online() -> None:
    """Run migrations in 'online' mode.

    In this scenario we need to create an Engine
    and associate a connection with the context.

    """
    connectable = engine_from_config(
        config.get_section(config.config_ini_section, {}),
        prefix="sqlalchemy.",
        poolclass=pool.NullPool,
    )

    with connectable.connect() as connection:
        context.configure(
            connection=connection, target_metadata=target_metadata
        )

        with context.begin_transaction():
            context.run_migrations()


if context.is_offline_mode():
    run_migrations_offline()
else:
    run_migrations_online()

Alembic revision and upgrade

alembic revision --autogenerate
alembic upgrade head

Important

If you need to delete database and create again run this command:

alembic stamp head --purge

To load the env variables in your envirorment:

export $(grep -v '^#' .env | xargs)

Run application in development mode

cd src
fastapi dev main.py --host 0.0.0.0

Commands blocks

# Ubuntu
sudo apt install python3.12-venv
docker-compose up -d
python3 -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt
export $(grep -v '^#' .env | xargs)

# Windows
pip install virtualenv
python -m venv .venv
.\.venv\Scripts\Activate
pip install -r requirements.txt
export $(grep -v '^#' .env | xargs)


# Mac
brew install python@3.12
python3 -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt
export $(grep -v '^#' .env | xargs)

Alembic

alembic init alembic
alembic revision --autogenerate
alembic upgrade head
alembic stamp head --purge

🗃️ Directory Structure

Directory	Description
📂 src/	Main project directory, containing dependencies, source code, and media files.
📂 src/database	Database-related code.
📂 src/modules	All project modules and communication with external services.
📂 src/routers	Service requests (backend server and API) via GET, POST, DELETE, and UPDATE methods.
📂 src/schemas	Project schemas and data models.
📄 .env.example	Example environment variables file.
📄 .gitignore	Specifies files and directories to be ignored by Git.
📄 alembic.ini	Configuration file for Alembic migrations.
📄 pyproject.toml	Configuration file for Python dependencies and tools.
📄 README.md	Main documentation file for the project.
📄 requirements.txt	List of dependencies required to run the project.