Morgan ORM for Python

A simple and easy-to-use ORM for managing your database queries.

Motivation

I decided to create an ORM for two main reasons:

• To build an ORM that is extremely simple to use, without complex configurations—just set up your database access and you're ready to go.
• As a learning experience to understand how an ORM works internally.

I've worked with Laravel for many years, so in a way, I'm drawing inspiration from Eloquent for this ORM.

Usage

Using the query builder from a model

Creating a model

# Import required packages
from morgan.connection import DatabaseConfig, ConnectionType
from morgan.orm import Model

# Create your model inheriting from Model
class User(Model):
    table = "users"     # Name of your table
    primary_key = "id"  # Name of your primary key

    # Configuration for the database (now it only supports SQLite)
    db_config = DatabaseConfig(connector=ConnectionType.SQLite, database_url="morgan.db")

Some available operations

# Get all the users
users = User.all()

# Get user by primary key
user = User.get_by_pk(pk=92)

# Get users by filtering results
users = User.where("status = ?", 1).get()

# Limiting results
users = User.where("status = ?", 1).limit(5).get()

# Ordering results
users = User.where("status = ?", 1).order_by("created_at", "DESC").get()

# Creating records
user = User.create_one(username="admin", email="[email protected]", status=1)

# Or...
users_created = User.create_many([
    {"username": "admin", "email": "[email protected]", "status": 1},
    {"username": "staff", "email": "[email protected]", "status": 1},
    {"username": "guest", "email": "[email protected]", "status": 1},
])

# Updating records
User.where("status = ?", 0).update("status = ?", 1).exec()

# Deleting records
User.where("email = ?", "[email protected]").delete().exec()

Working with an instance

# Creating a new user
user = User(username="admin", email="[email protected]", status=1)
user.save()

# Or...
user = User()
user.username = "admin"
user.email = "[email protected]"
user.status = 1
user.save()

# Updating an existing record
user = User.get_by_pk(pk=8)
user.email = "[email protected]"
user.save()

# Deleting a record
user = User.get_by_pk(pk=9)
user.delete()

Roadmap

• Add support for methods such as create_one and create_many in the QueryBuilder.
• Add support for logging queries.
• Add unit tests.
• Add support for MySQL/MariaDB and PostgreSQL.
• Add support for statements like GROUP BY and HAVING.
• Add support for relationships such as one-to-one, one-to-many, and many-to-one.

Future plans include:

• Support for migrations.
• CLI tool for creating migrations and models files.

License

MIT