CreateInstanceTrait for TYPO3 CMS

CreateInstanceTrait.php

<?php

use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Core\Utility\StringUtility;
use TYPO3\CMS\Extbase\Object\ObjectManager;

trait CreateInstanceTrait
{
    /** @return parent */
    public static function createInstance()
    {
        if (StringUtility::endsWith(static::class, 'Repository')) {
            $objectManager = GeneralUtility::makeInstance(ObjectManager::class);

            return $objectManager->get(static::class);
        }

        return GeneralUtility::makeInstance(static::class);
    }
}

UsageExample.php

<?php

class MyAwesomeRepository extends Repository
{
  use CreateInstanceTrait;
}

$repo = MyAwesomeRepository::createInstance();