PHP code example of sebdesign / laravel-state-machine

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

sebdesign / laravel-state-machine example snippets

'callbacks' => [
    // will be called when testing a transition
    'guard' => [
        'guard_on_submitting' => [
            // call the callback on a specific transition
            'on' => 'submit_changes',

            // will call the method of this class
            'do' => ['MyService', 'handle'],

            // arguments for the callback
            'args' => ['object'],
        ],
    ],
],

use App\User;
use App\Article;

Gate::define('approve', function (User $user, Article $article) {
    //
});

'callbacks' => [
    'guard' => [
        'guard_on_approving' => [
            // call the gate on a specific transition
            'on' => 'approve',
            // will call Gate:allows('approve', $article)
            'can' => 'approve',
        ],
    ],
],

namespace App\Policies;

use App\User;
use App\Article;

class ArticlePolicy
{
    public function approve(User $user, Article $article)
    {
        //
    }
}

'callbacks' => [
    'guard' => [
        'guard_on_approving' => [
            // call the policy on a specific transition
            'on' => 'approve',
            // will call Gate:allows('approve', $article)
            'can' => 'approve',
        ],
    ],
],

use SM\Event\SMEvents;

/**
 * The event listener mappings for the application.
 *
 * @var array
 */
protected $listen = [
    SMEvents::TEST_TRANSITION => [
        \App\Listeners\CheckTransition::class,
    ],
    SMEvents::PRE_TRANSITION => [
        \App\Listeners\BeforeTransition::class,
    ],
    SMEvents::POST_TRANSITION => [
        \App\Listeners\AfterTransition::class,
    ],
    'winzou.state_machine.*' => [
        \App\Listeners\Transition::class,
    ],
];

// Reject the transition of the approval date is past
Event::listen(SMEvents::TEST_TRANSITION, function (TransitionEvent $event) {
    $context = $event->getContext();

    if ($context['approved_at']->isPast()) {
        $event->setRejected();
    }
});

// Check if a approve transition can be applied on some date
$stateMachine->can('approve', ['approved_at' => now()]);

// Setup an callback after publishing
[
    'callbacks' => [
        'after' => [
            'after_publishing' => [
                'on' => 'publish',
                'do' => [App\Actions\PublishArticleAction::class, 'execute'],
                'args' => ['object', 'event'],
            ],
        ],
    ],
];

// Save the publish date in your action
class PublishArticleAction
{
    public function execute(Article $article, TransitionEvent $event)
    {
        $context = $event->getContext();
        $article->update(['published_at' => $context['published_at']]);
    }
}

// Apply a publish transition on some date
$stateMachine->apply('publish', false, ['published_at' => now()]);

return [
    'graphA' => [
        'class' => App\Article::class,

        'metadata' => [
            'title' => 'Article State Machine',
        ],

        'states' => [
            [
                'name' => 'pending_review',
                'metadata' => ['title' => 'Pending Review'],
            ],
        ],

        'transitions' => [
            'ask_for_changes' => [
                'from' => ['pending_review'],
                'to' => 'accepted',
                'metadata' => ['title' => 'Ask for changes'],
            ],
        ],
    ],
];

$stateMachine = StateMachine::get($article);

// ['title' => 'Article State Machine']
$stateMachine->metadata('graph');
$stateMachine->metadata()->graph();

// 'Article State Machine'
$stateMachine->metadata('title');

// 'Article State Machine'
$stateMachine->metadata('graph', 'title');
$stateMachine->metadata()->graph('title');

// null
$stateMachine->metadata('graph', 'invalid');
$stateMachine->metadata()->graph('invalid');

// 'default'
$stateMachine->metadata('graph', 'invalid', 'default');
$stateMachine->metadata()->graph('invalid', 'default');

$stateMachine = StateMachine::get($article);

// ['title' => 'Pending Review']
$stateMachine->metadata('state', 'pending_review');
$stateMachine->metadata()->state('pending_review');

// 'Pending Review'
$stateMachine->metadata('state', 'pending_review', 'title');
$stateMachine->metadata()->state('pending_review', 'title');

// null
$stateMachine->metadata('state', 'pending_review', 'invalid');
$stateMachine->metadata()->state('pending_review', 'invalid');

// 'default'
$stateMachine->metadata('state', 'pending_review', 'invalid', 'default');
$stateMachine->metadata()->state('pending_review', 'invalid', 'default');

$article->state = 'pending_review';
$stateMachine = StateMachine::get($article);

// ['title' => 'Pending Review']
$stateMachine->metadata('state');

// 'Pending Review'
$stateMachine->metadata('state', 'title');

// null
$stateMachine->metadata('state', 'invalid');

// 'default'
$stateMachine->metadata('state', 'invalid', 'default');

$stateMachine = StateMachine::get($article);

// ['title' => 'Ask for changes']
$stateMachine->metadata('transition', 'ask_for_changes');
$stateMachine->metadata()->transition('ask_for_changes');

// 'Ask for changes'
$stateMachine->metadata('transition', 'ask_for_changes', 'title');
$stateMachine->metadata()->transition('ask_for_changes', 'title');

// null
$stateMachine->metadata('transition', 'ask_for_changes', 'invalid');
$stateMachine->metadata()->transition('ask_for_changes', 'invalid');

// 'default'
$stateMachine->metadata('transition', 'ask_for_changes', 'invalid', 'default');
$stateMachine->metadata()->transition('ask_for_changes', 'invalid', 'default');

 php


'providers' => [
    Sebdesign\SM\ServiceProvider::class,
],

'aliases' => [
    'StateMachine' => Sebdesign\SM\Facade::class,
],

 bash
php artisan vendor:publish --provider="Sebdesign\SM\ServiceProvider"

 php


// Get the article
$article = App\Article::find($id);

// Get the state machine for this article, and graph called "simple"

// Using the facade
$stateMachine = StateMachine::get($article, 'simple');

// Or using the service container with dependency injection
public function method(SM\Factory\FactoryInterface $factory)
{
    $stateMachine = $factory->get($article, 'simple');
}