OhMyAPI

Think: Micro-Django, but API-first, less clunky and 100% async.

OhMyAPI is a Django-flavored web-application scaffolding framework and management layer. Built around FastAPI and TortoiseORM, it is 100% async.

It is blazingly fast, fun to use and comes with batteries included!

Features

• Django-like project-layout and -structure
• Django-like prject-level settings.py
• Django-like models via TortoiseORM
• Django-like Model.Meta class for model configuration
• Easily convert your query results to pydantic models via Model.Schema
• Django-like migrations (makemigrations & migrate) via Aerich
• Django-like CLI tooling (startproject, startapp, shell, serve, etc)
• Various optional builtin apps you can hook into your project
• Highly configurable and customizable
• 100% async

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Getting started

Creating a Project

pip install ohmyapi
ohmyapi startproject myproject
cd myproject

This will create the following directory structure:

myproject/
  - pyproject.toml
  - README.md
  - settings.py

Run your project with:

ohmyapi serve

In your browser go to:

• http://localhost:8000/docs

Creating an App

Create a new app by:

ohmyapi startapp myapp

This will create the following directory structure:

myproject/
  - myapp/
    - __init__.py
    - models.py
    - routes.py
  - pyproject.toml
  - README.md
  - settings.py

Add 'myapp' to your INSTALLED_APPS in settings.py.

Models

Write your first model in myapp/models.py:

from ohmyapi.db import Model, field


class Person(Model):
    id: int = field.IntField(min=1, pk=True)
    name: str = field.CharField(min_length=1, max_length=255)
    username: str = field.CharField(min_length=1, max_length=255, unique=True)
    age: int = field.IntField(min=0)

API Routes

Next, create your endpoints in myapp/routes.py:

from ohmyapi.router import APIRouter, HTTPException
from ohmyapi.db.exceptions import DoesNotExist

from .models import Person

router = APIRouter(prefix="/myapp")


@router.get("/")
async def list():
    queryset = await Person.all()
    return await Person.Schema.many.from_queryset(queryset)


@router.get("/:id")
async def get(id: int):
    try:
        queryset = await Person.get(pk=id)
        return await Person.Schema.one(queryset)
    except DoesNotExist:
        raise HTTPException(status_code=404, detail="item not found")

...

Migrations

Before we can run the app, we need to create and initialize the database.

Similar to Django, first run:

ohmyapi makemigrations [ <app> ]  # no app means all INSTALLED_APPS

This will create a migrations/ folder in you project root.

myproject/
  - myapp/
    - __init__.py
    - models.py
    - routes.py
  - migrations/
    - myapp/
  - pyproject.toml
  - README.md
  - settings.py

Apply your migrations via:

ohmyapi migrate [ <app> ]  # no app means all INSTALLED_APPS

Run your project:

ohmyapi serve

Shell

Similar to Django, you can attach to an interactive shell with your project already loaded inside.

ohmyapi shell

Authentication

A builtin auth app is available.

Simply add ohmyapi_auth to your INSTALLED_APPS and define a JWT_SECRET in your settings.py. Remember to makemigrations and migrate for the necessary tables to be created in the database.

settings.py:

INSTALLED_APPS = [
    'ohmyapi_auth',
    ...
]

JWT_SECRET = "t0ps3cr3t"

After restarting your project you will have access to the ohmyapi_auth app. It comes with a User and Group model, as well as endpoints for JWT auth.

Create a super-user:

ohmyapi createsuperuser

Permissions

API-Level

Use FastAPI's Depends pattern to implement API-level access-control.

In your routes.py:

from ohmyapi.router import APIRouter, Depends

from ohmyapi_auth.models import User
from ohmyapi_auth.permissions import require_authenticated

router = APIRouter(prefix="/myapp")


@router.get("/")
def must_be_authenticated(user: User = Depends(require_authenticated)):
    return {"user": user}