AuthorsTable.php

<?php
/**
 * CakePHP(tm) Tests <http://book.cakephp.org/2.0/en/development/testing.html>
 * Copyright 2005-2013, Cake Software Foundation, Inc. (http://cakefoundation.org)
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice
 *
 * @since         3.0.0
 * @license       http://www.opensource.org/licenses/mit-license.php MIT License
 */
namespace TestApp\Model\Table;

use Cake\ORM\Query;
use Cake\ORM\Table;

/**
 * Author table class
 *
 */
class AuthorsTable extends Table {

	public function initialize(array $config) {
		$this->hasMany('articles');
	}

	public function findByAuthor(Query $query, array $options = []) {
		if (isset($options['author_id'])) {
			$query->where(['Articles.id' => $options['author_id']]);
		}
		return $query;
	}

}