「Php/Symfony/Symfony2/doctrine/リレーション」の版間の差分
提供: 初心者エンジニアの簡易メモ
(ページの作成:「==リレーション準備== カテゴリテーブルを作る php app/console doctrine:generate:entity --entity="AcmeHelloBundle:Category" --fields="name:string(255)"...」) |
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php app/console doctrine:generate:entity --entity="AcmeHelloBundle:Category" --fields="name:string(255)" | php app/console doctrine:generate:entity --entity="AcmeHelloBundle:Category" --fields="name:string(255)" | ||
− | CREATE TABLE ` | + | CREATE TABLE `categorys` ( |
`id` int(11) NOT NULL AUTO_INCREMENT, | `id` int(11) NOT NULL AUTO_INCREMENT, | ||
`name` varchar(255) COLLATE utf8_unicode_ci NOT NULL, | `name` varchar(255) COLLATE utf8_unicode_ci NOT NULL, | ||
行51: | 行51: | ||
show create table user; | show create table user; | ||
− | CREATE TABLE ` | + | CREATE TABLE `users` ( |
`id` int(11) NOT NULL AUTO_INCREMENT, | `id` int(11) NOT NULL AUTO_INCREMENT, | ||
`name` varchar(255) COLLATE utf8_unicode_ci NOT NULL, | `name` varchar(255) COLLATE utf8_unicode_ci NOT NULL, | ||
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PRIMARY KEY (`id`), | PRIMARY KEY (`id`), | ||
KEY `IDX_2DA1797712469DE2` (`category_id`), | KEY `IDX_2DA1797712469DE2` (`category_id`), | ||
− | CONSTRAINT `FK_2DA1797712469DE2` FOREIGN KEY (`category_id`) REFERENCES ` | + | CONSTRAINT `FK_2DA1797712469DE2` FOREIGN KEY (`category_id`) REFERENCES `categorys` (`id`) |
) ENGINE=InnoDB AUTO_INCREMENT=15 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci | ) ENGINE=InnoDB AUTO_INCREMENT=15 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci | ||
2016年12月22日 (木) 17:22時点における版
リレーション準備
カテゴリテーブルを作る
php app/console doctrine:generate:entity --entity="AcmeHelloBundle:Category" --fields="name:string(255)"
CREATE TABLE `categorys` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(255) COLLATE utf8_unicode_ci NOT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
INSERT INTO Category(id, name) values(1, "1組"); INSERT INTO Category(id, name) values(2, "2組"); select * from Category; +----+------+ | id | name | +----+------+ | 1 | 1組 | | 2 | 2組 |
リレーションをクラスに定義
Entity/User.phpに以下を追加
class User { /** * @ORM\ManyToOne(targetEntity="Category", inversedBy="users") * @ORM\JoinColumn(name="category_id", referencedColumnName="id") */ protected $category; public function getCategory() { return $this->category; }
Entity/Category.phpに以下を追加
class Category { /** * @ORM\OneToMany(targetEntity="User", mappedBy="category") */ protected $users; public function __construct() { $this->users = new ArrayCollection(); } public function getUsers() { return $this->users; }
dbに外部キーを反映する
$ php app/console doctrine:schema:update --force
show create table user;
CREATE TABLE `users` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(255) COLLATE utf8_unicode_ci NOT NULL, `description` longtext COLLATE utf8_unicode_ci NOT NULL, `category_id` int(11) DEFAULT NULL, PRIMARY KEY (`id`), KEY `IDX_2DA1797712469DE2` (`category_id`), CONSTRAINT `FK_2DA1797712469DE2` FOREIGN KEY (`category_id`) REFERENCES `categorys` (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=15 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
リレーションデータをselectする
カテゴリ付きuserを取得
$repository = $this->getDoctrine() ->getRepository('AcmeHelloBundle:User'); $user = $repository->find(6); if ($user) { echo $user->getId(); echo $user->getName(); echo $user->getCategory()->getName(); }
userリスト付きカテゴリ
$repository = $this->getDoctrine() ->getRepository('AcmeHelloBundle:Category'); $category = $repository->find(1); if ($category) { echo $category->getId(); echo $category->getName(); foreach ($category->getUsers() as $user) { echo $user->getName(); } }