PHP code example of star / state-machine

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

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

    

star / state-machine example snippets

// your context using the builder
public function isActive()
{
    return $this->stateMachine()-hasAttribute("is_active");
}

// your context using the metadata
public function isActive()
{
    return $this->state->hasAttribute("is_active");
}

class Post
{
    /**
     * @var string
     */
    private $state;

    public function publish()
    {
        $this->state = $this->stateMachine()->transit("publish", $this);
    }

    public function archive()
    {
        $this->state = $this->stateMachine()->transit("archive", $this);
    }

    public function unarchive()
    {
        $this->state = $this->stateMachine()->transit("unarchive", $this);
    }

    public function isClosed()
    {
        return $this->stateMachine()->hasAttribute("is_closed");
    }

    /**
     * @return StateMachine
     */
    private function stateMachine()
    {
        return StateBuilder::build()
            ->allowTransition("publish", "draft", "published")
            ->allowTransition("archive", "published", "archived")
            ->allowTransition("unarchive", "published", "draft")
            ->addAttribute("is_closed", ["archived", "drafted"])
            ->create($this->state);
    }
}

final class MyStateWorkflow extends StateMetadata
{
    protected function __construct()
    {
        parent::__construct('pending');
    }

    protected function createMachine(StateBuilder $builder)
    {
        $builder->allowTransition("publish", "draft", "published")
        $builder->allowTransition("archive", "published", "archived")
        $builder->allowTransition("unarchive", "published", "draft")
        $builder->addAttribute("is_closed", ["archived", "drafted"])
    }
}

class Post
{
    /**
     * @var string
     */
    private $state;

    public function __construct()
    {
        $this->>state = new MyStateWorkflow();
    }

    public function publish()
    {
        $this->state = $this->state->transit("publish", $this);
    }

    public function archive()
    {
        $this->state = $this->state->transit("archive", $this);
    }

    public function unarchive()
    {
        $this->state = $this->state->transit("unarchive", $this);
    }

    public function isClosed()
    {
        return $this->state->hasAttribute("is_closed");
    }
}

$stateMachine->addListener(
    StateEventStore::BEFORE_TRANSITION,
    function(TransitionWasRequested $event) {
        // do something
    }
);

$this->state->transit("transition", $this, new DoSomethingOnSuccessIfConditionMatches());