CakePHP3（3.0.0-alpha1）のブログチュートリアルで記事にコメント機能を追加する

①comentsテーブルを作る

CREATE TABLE comments (
id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
title VARCHAR(50),
body TEXT,
article_id int(10),
created DATETIME DEFAULT NULL,
modified DATETIME DEFAULT NULL
);

INSERT INTO comments (title,body,article_idcreated)
VALUES ('test', 'comment', 1, NOW());

②CommentsTable.phpを作る

<?php
namespace App\Model\Table;

use Cake\ORM\Table;
use Cake\Validation\Validator;


class CommentsTable extends Table {

	public function initialize(array $config) {
		$this->addBehavior('Timestamp');
	}

	public function validationDefault(Validator $validator) {
        $validator
            ->notEmpty('title')
            ->notEmpty('body');

        return $validator;
    }
}

③ArticleTable.phpでhasManyの設定

public function initialize(array $config) {
    $this->addBehavior('Timestamp');

    $this->hasMany('Comments', [
            'className' => 'Comments'
    ]);
}

④ArticlesController.phpを書き換える

public function view($id = null) {
        if (!$id) {
            throw new NotFoundException(__('Invalid article'));
        }

        //$article = $this->Articles->get($id);
        $article = $this->Articles->find('all')->contain(['Comments'])->where(['id'=>$id])->first();

        $this->set(compact('article'));
}

⑤view.ctpを書き換える（下記を追加）

<h1>Comment</h1>
<table>
 <tr>
 <th>Id</th>
 <th>Title</th>
 <th>Created</th>
 </tr>
 <?php foreach ($article->comments as $comment): ?>
 <tr>
 <td><?= $comment->id ?></td>
 <td><?= $comment->title ?></td>
 <td><?= $comment->created->format(DATE_RFC850) ?></td>
 </tr>
 <?php endforeach; ?>
</table>

【備考】
viewで呼び出すときは$article->Commentsじゃなくて$article->commentsみたい