framework-m 0.2.5

A modern, metadata-driven business application framework

Framework M

A modern, metadata-driven business application framework in Python 3.12+.

Overview

Framework M is inspired by Frappe Framework but built from scratch with modern Python practices:

• Hexagonal Architecture: Clean separation via Ports & Adapters
• Async-First: Native asyncio with Litestar and SQLAlchemy
• Type-Safe: 100% type hints, mypy strict compatible
• Stateless: JWT/Token auth, no server-side sessions
• Metadata-Driven: Define DocTypes as Pydantic models

Installation

pip install framework-m

Or with uv:

uv add framework-m

Quick Start

1. Define a DocType

from framework_m import DocType, Field

class Todo(DocType):
    """A simple task document."""

    title: str = Field(description="Task title")
    description: str | None = Field(default=None, description="Task details")
    is_completed: bool = Field(default=False, description="Completion status")
    priority: int = Field(default=1, ge=1, le=5, description="Priority (1-5)")

2. Use the CLI

# Show version
m --version

# Show framework info
m info

# Start development server (coming soon)
m start

Features

Metadata-Driven DocTypes

DocTypes are Pydantic models with automatic:

• Database table generation
• REST API endpoints
• JSON Schema for frontends
• Validation and serialization

Hexagonal Architecture

┌─────────────────────────────────────────────────────────────┐
│                     Primary Adapters                        │
│         (HTTP API, CLI, WebSocket, Background Jobs)         │
└─────────────────────────────────────────────────────────────┘
                              │
                              ▼
┌─────────────────────────────────────────────────────────────┐
│                      Core Domain                            │
│              (DocTypes, Controllers, Business Logic)        │
│                                                             │
│  ┌─────────────┐  ┌───────────────┐  ┌──────────────┐       │
│  │ BaseDocType │  │ BaseController│  │ MetaRegistry │       │
│  └─────────────┘  └───────────────┘  └──────────────┘       │
└─────────────────────────────────────────────────────────────┘
                              │
                              ▼
┌─────────────────────────────────────────────────────────────┐
│                    Ports (Interfaces)                       │
│  RepositoryProtocol │ EventBusProtocol │ PermissionProtocol │
│  StorageProtocol    │ JobQueueProtocol │ CacheProtocol      │
└─────────────────────────────────────────────────────────────┘
                              │
                              ▼
┌─────────────────────────────────────────────────────────────┐
│                   Secondary Adapters                        │
│     (PostgreSQL, Redis, S3, SMTP, External APIs)            │
└─────────────────────────────────────────────────────────────┘

Built-in Protocols

Protocol	Purpose
RepositoryProtocol	CRUD operations for documents
EventBusProtocol	Publish/subscribe events
PermissionProtocol	Authorization with RLS
StorageProtocol	File storage abstraction
JobQueueProtocol	Background job processing
CacheProtocol	Caching layer
NotificationProtocol	Email/SMS notifications
SearchProtocol	Full-text search
PrintProtocol	PDF generation
I18nProtocol	Internationalization

Extensibility

Override any adapter via Python entrypoints:

# pyproject.toml
[project.entry-points."framework_m.overrides"]
repository = "my_app.adapters:CustomRepository"

Technology Stack

• Web Framework: Litestar 2.0+
• ORM: SQLAlchemy 2.0 (Async)
• Validation: Pydantic V2
• Task Queue: Taskiq + NATS JetStream
• DI Container: dependency-injector
• Database: PostgreSQL (default), SQLite (testing)
• Cache/Events: Redis

Project Structure

libs/framework-m/
├── src/framework_m/
│   ├── core/
│   │   ├── domain/         # DocType, Controller, Mixins
│   │   └── interfaces/     # Protocol definitions (Ports)
│   ├── adapters/           # Infrastructure implementations
│   ├── cli/                # CLI commands
│   └── public/             # Built-in DocTypes
└── tests/

Development

# Clone and setup
git clone https://gitlab.com/castlecraft/framework-m.git
cd framework-m

# Install dependencies
uv sync --all-extras

# Run tests
uv run pytest

# Type checking
uv run mypy src/framework_m --strict

# Linting
uv run ruff check .
uv run ruff format .

Documentation

• Architecture Overview
• Contributing Guide
• Phase Checklists

License

MIT License - see LICENSE for details.

Acknowledgments

Inspired by Frappe Framework, reimagined with:

• Modern Python (3.12+, async/await, type hints)
• Clean architecture (Hexagonal/Ports & Adapters)
• No global state (Dependency Injection)
• Code-first schemas (Pydantic, not database JSON)