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Service Classes and Models

Spiral framework tries to help you to separate database and business logic, since architecture of your application is only limited by your imagination there is no recommended approach of how to organize your models but only few help classes and implementations.

To speed up model development, use class Spiral\Core\Service which can give you shorter access to container and shared bindings.

Every Controller is a Service as well. Consider implementing SingletonInterface in your services in order to share them across application.

Example Model

Due to container shortcuts simpliest implementation of service class might look like:

class UsersService extends Service
{
    public function getCount(): int
    {
        return $this->db->table('users')->count();
    }
}

Services DO NOT support method injection, you must provide arguments manually or use constructor dependencies.

Now you can use this sample service in your controller:

protected function testAction(UsersService $users)
{
    dump($users->getCount());
}

Consider container shortcuts as RAD approach and replace them with proper dependencies when ready.

Constructor Injections

As any other class you can change your Service constructor to request additional dependencies, for example we can create model which manages our blog posts source and decouples from Service class:

class BlogService implements SingletonInterface
{
    private $source;

    public function __construct(PostsSource $source)
    {
        $this->source = $source;
    }

    public function getPosts(DateTimeInterface $date): RecordSelector
    {
        return $this->source->findByDate($date);
    }
}