Eloquent State Machines is a package by Andrés Santibáñez that simplifies transitioning the states of Eloquent models:
During this weekend, I started working on a new package for @laravelphp to manage state machines for Eloquent models. Had so much fun and learned a ton in the process.
I've just tagged v1.0.0. Enjoy!https://t.co/9CrZ4azz3C
Feedback welcomed!
— Andrés Santibáñez (@asantibanez) December 7, 2020
Transitioning states is accomplished by defining the transition logic in a specific state machine. Here’s an example from the readme of a SalesOrder model:
// 'pending', 'approved', 'declined' or 'processed'$salesOrder->status;// null, 'pending', 'completed'$salesOrder->fulfillment; //// Transition state examples// $salesOrder->status()->transitionTo('approved');$salesOrder->fulfillment()->transitionTo('completed'); // Transition with custom properties$salesOrder->status()->transitionTo('approved', [ 'comments' => 'Customer has available credit',]);
Here are some examples of checking the transition history:
$salesOrder->status()->was('approved');$salesOrder->status()->timesWas('approved');$salesOrder->status()->whenWas('approved');$salesOrder->fulfillment()->snapshowWhen('completed');$salesOrder->status()->history()->get();
Finally, here’s an example of how a model might consume this package:
namespace App\Models; use App\StateMachines\SalesOrders\StatusStateMachine;use Asantibanez\LaravelEloquentStateMachines\Traits\HasStateMachines;use Illuminate\Database\Eloquent\Factories\HasFactory;use Illuminate\Database\Eloquent\Model; class SalesOrder extends Model{ use HasFactory; use HasStateMachines; public $stateMachines = [ 'status' => StatusStateMachine::class, ];}
Andrés has a demo application available to demonstrate how to use this package with Laravel. You can learn more about this package, get full installation instructions, and view the source code on GitHub.
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Full stack web developer. Author of Lumen Programming Guide and Docker for PHP Developers.