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dbml-to-laravel

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Laravel package to generate Eloquent models and migration files from DBML schema files. Simplify DBML parsing, automate relationship creation, and speed up your development workflow.

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# **DBML to Laravel Eloquent Generator ✨**

**Generate Laravel Eloquent models and migration files directly from your DBML (Database Markup Language) diagrams, accelerating Laravel development and streamlining your schema-to-code workflow.**

> 📰 **Featured on [Laravel News](https://laravel-news.com/dbml-to-laravel)** — the official community blog for Laravel developers!

[![Latest Version on Packagist](https://img.shields.io/packagist/v/egyjs/dbml-to-laravel.svg?style=flat-square)](https://packagist.org/packages/egyjs/dbml-to-laravel)
[![GitHub Tests Action Status](https://img.shields.io/github/actions/workflow/status/egyjs/dbml-to-laravel/run-tests.yml?branch=main&label=tests&style=flat-square)](https://github.com/egyjs/dbml-to-laravel/actions?query=workflow%3Arun-tests+branch%3Amain)
[![Total Downloads](https://img.shields.io/packagist/dt/egyjs/dbml-to-laravel.svg?style=flat-square)](https://packagist.org/packages/egyjs/dbml-to-laravel)
[![Featured on Laravel News](https://img.shields.io/badge/Laravel%20News-Featured-orange?style=flat-square)](https://laravel-news.com/dbml-to-laravel)

## **🚀 Motivation**

Tired of manually writing Laravel Eloquent models and migration files from your database diagrams? This package automates the process, letting you focus on building features rather than repetitive boilerplate code. Say goodbye to manual schema-to-code conversion and embrace a faster, more efficient Laravel development workflow.

![DBML to Laravel Model & Migration Generator](https://github.com/user-attachments/assets/d15995b7-b95f-4524-b81d-65007b4549f8)

## **✨ Features**

* **DBML to Laravel Models:** Automatically generate Eloquent models with fillable properties, hidden attributes, and defined relationships (one-to-one, one-to-many, many-to-many).  
* **DBML to Migration Files:** Generate clean and accurate migration files with proper data types, nullability, default values, and foreign key constraints, directly from your DBML schema.  
* **Customizable Stubs:** Easily modify the default model and migration stubs to align with your project's coding style and specific requirements.  
* **Relationship Parsing:** Intelligently parses DBML relationships to create correct Eloquent relationship methods (e.g., `hasMany`, `belongsTo`, `belongsToMany`).  
* **Casts Support:** Automatically adds common Eloquent casts (e.g., JSON to arrays, timestamps to datetime objects) based on DBML column types.
* **Incremental Sync:** Run `dbml:sync` to generate alter migrations and patch models based on schema changes — no need to regenerate everything from scratch.

## **📦 Installation**

To get started with the DBML to Laravel Eloquent Generator, follow these simple steps:

1. **Require the package via Composer:**
```bash
composer require egyjs/dbml-to-laravel --dev
```
3. **Publish the customizable stubs (optional, but recommended):**  
```bash
php artisan vendor:publish --tag=dbml-to-laravel-stubs
```
   This command will publish the stub files to `stubs/dbml-to-laravel/`, allowing you to customize the generated code.

### **Requirements**

* Laravel 8.x+  
* PHP 8.0+  
* Node.js 18+ runtime (the DBML parser is pre-bundled, so you never need to run `npm install` in your project)

## **💡 Usage**

Once installed, you can generate your Laravel models and migrations from a DBML file using the `dbml:generate` Artisan command. (`generate:dbml` also works as a legacy alias.)

1. **Create your DBML schema file** (e.g., database/schema.dbml).  
   **Example database/schema.dbml:**
```dbml
   Table users {  
     id int [pk, increment]  
     name varchar  
     email varchar [unique]  
     password varchar  
     created_at datetime  
     updated_at datetime  
   }

Table posts {  
     id int [pk, increment]  
     user_id int [ref: > users.id]  
     title varchar  
     content text  
     created_at datetime  
     updated_at datetime  
   }

Ref: posts.user_id > users.id
```
3. **Run the Artisan command:**  
```bash
php artisan dbml:generate database/schema.dbml
```

Replace `database/schema.dbml` with the actual path to your DBML file.

### **Expected Output**

After running the command, the package will generate:

* **Eloquent Models:** In your `app/Models` directory (e.g., `app/Models/User.php`).  
* **Migration Files:** In your `database/migrations` directory (e.g., `2023_01_01_000000_create_posts_table.php`).

**Example Generated `app/Models/Post.php`:**

```php
<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class Post extends Model
{
    use HasFactory;

/**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $fillable = [
        'user_id',
        'title',
        'content',
    ];

/**
     * Get the user that owns the Post.
     */
    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class);
    }
}
```

Example Generated `database/migrations/2023_01_01_000000_create_posts_table.php`:

```php
<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

return new class extends Migration
{
    /**
     * Run the migrations.
     */
    public function up(): void
    {
        Schema::create('posts', function (Blueprint $table) {
            $table->increments('id');
            $table->integer('user_id');
            $table->string('title');
            $table->text('content');
            $table->timestamps();

$table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
        });
    }

/**
     * Reverse the migrations.
     */
    public function down(): void
    {
        Schema::dropIfExists('posts');
    }
}
```

### **Incremental Sync**

After your initial `generate:dbml`, you can iterate on your DBML schema and generate only the changes:

```bash
php artisan dbml:sync database/schema.dbml
```

This command:

1. Reads the snapshot (`.dbml-sync.json`) created by `generate:dbml`
2. Compares it against the current DBML file
3. Generates **alter migrations** for added/modified/dropped columns, indexes, and foreign keys
4. Generates **create migrations** for new tables and **drop migrations** for removed tables
5. Patches existing Eloquent models within `@dbml-sync` markers (fillable, casts, relations, table property)

Use `--force` to skip confirmation prompts:

```bash
php artisan dbml:sync database/schema.dbml --force
```

**Workflow example:**

```bash
# Initial generation — creates models, migrations, and snapshot
php artisan dbml:generate database/schema.dbml

# ... edit schema.dbml (add columns, new tables, etc.)

# Incremental sync — only the changes
php artisan dbml:sync database/schema.dbml
```

**Model markers.** Generated models include `@dbml-sync` markers that the patcher targets:

```php
class User extends Model
{
    // @dbml-sync:fillable
    protected $fillable = ['name', 'email'];
    // @enddbml-sync:fillable

// @dbml-sync:casts
    protected $casts = ['email_verified_at' => 'datetime'];
    // @enddbml-sync:casts

// @dbml-sync:relations
    public function posts() { return $this->hasMany(Post::class); }
    // @enddbml-sync:relations
}
```

Code outside these markers is never touched by `dbml:sync`.

## **⚙️ Customization**

You can modify the generated model and migration templates by editing the stub files located in `stubs/dbml-to-laravel/` after publishing them. This allows you to tailor the output to your specific project needs, including adding custom traits, interfaces, or modifying default property definitions.

### Updating the bundled DBML parser (contributors only)

The published package already includes a fully bundled parser, so consumers never have to install Node dependencies. If you change `bin/parse-dbml.js`, run the following before opening a PR:

```bash
npm install
npm run build-parser
```

Commit both the updated source file and the generated `bin/parse-dbml.runtime.cjs` artifact so downstream users continue to benefit from the prepackaged parser.

## **🤝 Contributing**

We welcome contributions! Please see our [CONTRIBUTING.md](/CONTRIBUTING.md) for details on how you can help improve this project. Whether it's bug fixes, new features, or documentation improvements, your input is valuable.

### Contributor Documentation

Detailed contributor guides live in the [`docs/`](docs/) directory:

| Document | Description |
|----------|-------------|
| [Getting Started](docs/getting-started.md) | Clone to first green test |
| [Architecture](docs/architecture.md) | 3-stage pipeline, component map, data flow |
| [Adding Features](docs/adding-features.md) | Recipe-style "how do I add X" guides |
| [Stubs](docs/stubs.md) | Stub placeholders, override paths, customization |
| [Parser Bundle](docs/parser-bundle.md) | Node parser, esbuild bundle, JSON payload |
| [Testing](docs/testing.md) | Pest patterns, fixtures, adding test cases |
| [Gotchas](docs/gotchas.md) | Compatibility matrix, silent edge cases, traps |

## **❓ Support**

For questions, bug reports, or feature requests, please open an issue on the [GitHub Issues page](https://github.com/egyjs/dbml-to-laravel/issues). We'll do our best to respond promptly.

---

🎉 _This package was featured by [Laravel News](https://laravel-news.com/dbml-to-laravel). If you find it useful, give it a ⭐ on GitHub and share it with your Laravel team!_

## **📄 License**

This project is open-sourced software licensed under the [MIT License](/LICENSE.md).

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