luhorm 0.0.2

a compile time orm for rust!
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83

# luhORM
[<img alt="github" src="https://img.shields.io/badge/github-calizoots/luhorm-8da0cb?style=for-the-badge&labelColor=555555&logo=github" height="20">](https://github.com/calizoots/luhtwin)
[<img alt="crates.io" src="https://img.shields.io/crates/v/luhorm.svg?style=for-the-badge&color=fc8d62&logo=rust" height="20">](https://crates.io/crates/luhtwin)
[<img alt="docs.rs" src="https://img.shields.io/badge/docs.rs-luhorm-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs" height="20">](https://docs.rs/luhtwin)

A compile-time ORM that generates type-safe database code through build-time introspection.
Supporting Sqlite and Postgresql out the box but extensible to another database

## Features

- **Compile-time code generation** - Zero runtime reflection, all code generated at build time
- **Type-safe queries** - Builder pattern with compile-time checked columns
- **Foreign key relationships** - Automatic join methods and aggregation helpers
- **Multiple databases** - Built-in support for SQLite and PostgreSQL
- **Migration system** - Hash-verified migrations with automatic tracking

## Quick Start

### Prerequisites

- must have rand & chrono in Cargo.toml
- must have sqlx


1. Add to `build.rs`:
```rust
use luhorm::Codegen;
use sqlx::sqlite::SqlitePoolOptions;

#[tokio::main]
async fn main() {
    let pool = SqlitePoolOptions::new()
        .connect("sqlite:my_db.db")
        .await
        .unwrap();
    
    Codegen::new("orm", pool, "migrations", None)
        .await
        .unwrap()
        .run_codegen()
        .unwrap();
}
```

2. Include generated code in `src/main.rs`:
```rust
mod orm {
    include!(concat!(env!("OUT_DIR"), "/orm.rs"));
}
```

3. Use it:
```rust
use crate::orm::{users::{Users, UsersBuilder}, entry::AggregateEntryUsers};

let users = Users::query()
    .name("alice")
    .age_gt(18)
    .fetch_all(&pool)
    .await?;

let x = Users::query()
    // could do this aswell
    // .join(Entry::NAME, Users::ID.of(), Entry::USERID.of())
    .join_entry()
    .fetch_with_entry(&pool)
    .await?
    .one_to_many()?;

// new feature might change
let new_user = UsersBuilder::new()
    .populate_fake_data()
    .build();

new_user.insert(&pool).await?;
```

## Current Limitations

- Transaction support would be tricky or at least idk I'm still thinking about how I want to do it
- Composite keys are a myth

> made with love - s.c 2026