saveAllTrait.php

<?php
namespace App\Model\Table;

trait saveAllTrait {
	public function saveAll($entities = [], $options = null) {
		if($options === null) {
			return array_map([$this, 'save'], $entities);
		}

		$saved_entities = [];
		foreach($entities as $entity) {
			$entity = $this->save($entity, $options);
			$this->eventManager()->dispatch(
				new Event('Model.saveAll', $this, ['result' => $entity])
			);
			$saved_entities[] = $entity;
		}
		return $saved_entities;
	}
}