JD10NN3 / versionable

Laravel 4 / 5 Model versioning made easy

Versionable

Easy to use Model versioning for Laravel 4 and Laravel 5

Keep track of all your model changes and revert to previous versions of it.

// Restore to the previous change
$content->previousVersion()->revert();

// Get model from a version
$oldModel = Version::find(100)->getModel();

Contents

• Installation
• Implementation
• Usage
  • Exclude attributes from versioning
  • Retrieving all versions associated to a model
  • Getting a diff of two versions
  • Revert to a previous version
• License

## Installation

In order to add Versionable to your project, just add

"mpociot/versionable": "~2.0"

to your composer.json. Then run composer install or composer update.

Or run composer require mpociot/versionable if you prefere that.

Run the migrations to create the "versions" table that will hold all version information.

php artisan migrate --path=vendor/mpociot/versionable/src/migrations

## Usage

Let the Models you want to set under version control use the VersionableTrait.

class Content extends Model {
	
	use Mpociot\Versionable\VersionableTrait;
	
}

That's it!

Every time you update your model, a new version containing the previous attributes will be stores in your database.

All timestamps and the possible soft-delete timestamp will be ignored.

### Exclude attributes from versioning

Sometimes you don't want to create a version every time an attribute on your model changes. For example your User model might have a last_login_at attribute. I'm pretty sure you don't want to create a new version of your User model every time that user logs in.

To exclude specific attributes from versioning, add a new array property to your model named dontVersionFields.

class User extends Model {
	
	use Mpociot\Versionable\VersionableTrait;
	
	/**
	 * @var array
	 */
	protected $dontVersionFields = [ 'last_login_at' ];

}

### Retrieving all versions associated to a model

To retrieve all stored versions use the versions attribute on your model.

This attribute can also be accessed like any other Laravel relation, since it is a MorphMany relation.

$model->versions;

### Getting a diff of two versions

If you want to know, what exactly has changed between two versions, use the version model's diff method.

The diff method takes a version model as an argument. This defines the version to diff against. If no version is provided, it will use the current version.

/**
 * Create a diff against the current version
 */
$diff = $page->previousVersion()->diff();


/**
 * Create a diff against a specific version
 */
$diff = $page->currentVersion()->diff( $version );

The result will be an associative array containing the attribute name as the key, and the different attribute value.

### Revert to a previous version

Saving versions is pretty cool, but the real benefit will be the ability to revert to a specific version.

There are multiple ways to do this.

Revert to the previous version

You can easiliy revert to the version prior to the currently active version using:

$content->previousVersion()->revert();

Revert to a specific version ID

You can also revert to a specific version ID of a model using:

$revertedModel = Version::find( $version_id )->revert();

## License

Versionable is free software distributed under the terms of the MIT license.