updated: 2018/3/6
jenssegers/laravel-mongodb を導入するメリット
MySQL Relations
If you're using a hybrid MongoDB and SQL setup, you're in luck! The model will automatically return a MongoDB- or SQL-relation based on the type of the related model. Of course, if you want this functionality to work both ways, your SQL-models will need use the Jenssegers\Mongodb\Eloquent\HybridRelations trait. Note that this functionality only works for hasOne, hasMany and belongsTo relations.
Example SQL-based User model:
use Jenssegers\Mongodb\Eloquent\HybridRelations;
class User extends Eloquent {
use HybridRelations;
protected $connection = 'mysql';
public function messages()
{
return $this->hasMany('Message');
}
}
And the Mongodb-based Message model:
use Jenssegers\Mongodb\Eloquent\Model as Eloquent;
class Message extends Eloquent {
protected $connection = 'mongodb';
public function user()
{
return $this->belongsTo('User');
}
}
EmbedsMany Relations
If you want to embed models, rather than referencing them, you can use the embedsMany relation. This relation is similar to the hasMany relation, but embeds the models inside the parent object.
REMEMBER: these relations return Eloquent collections, they don't return query builder objects!
use Jenssegers\Mongodb\Eloquent\Model as Eloquent;
class User extends Eloquent {
public function books()
{
return $this->embedsMany('Book');
}
}
You access the embedded models through the dynamic property:
$books = User::first()->books;
The inverse relation is automagically available, you don't need to define this reverse relation.
$user = $book->user;
Inserting and updating embedded models works similar to the hasMany relation:
$book = new Book(['title' => 'A Game of Thrones']);
$user = User::first();
$book = $user->books()->save($book);
// or
$book = $user->books()->create(['title' => 'A Game of Thrones'])
You can update embedded models using their save method (available since release 2.0.0):
$book = $user->books()->first();
$book->title = 'A Game of Thrones';
$book->save();
You can remove an embedded model by using the destroy method on the relation, or the delete method on the model (available since release 2.0.0):
$book = $user->books()->first();
$book->delete();
// or
$user->books()->destroy($book);
If you want to add or remove an embedded model, without touching the database, you can use the associate and dissociate methods. To eventually write the changes to the database, save the parent object:
$user->books()->associate($book);
$user->save();
Like other relations, embedsMany assumes the local key of the relationship based on the model name. You can override the default local key by passing a second argument to the embedsMany method:
return $this->embedsMany('Book', 'local_key');
Embedded relations will return a Collection of embedded items instead of a query builder. Check out the available operations here: https://laravel.com/docs/master/collections
EmbedsOne Relations
The embedsOne relation is similar to the EmbedsMany relation, but only embeds a single model.
use Jenssegers\Mongodb\Eloquent\Model as Eloquent;
class Book extends Eloquent {
public function author()
{
return $this->embedsOne('Author');
}
}
You access the embedded models through the dynamic property:
$author = Book::first()->author;
Inserting and updating embedded models works similar to the hasOne relation:
$author = new Author(['name' => 'John Doe']);
$book = Books::first();
$author = $book->author()->save($author);
// or
$author = $book->author()->create(['name' => 'John Doe']);
You can update the embedded model using the save method (available since release 2.0.0):
$author = $book->author;
$author->name = 'Jane Doe';
$author->save();
You can replace the embedded model with a new model like this:
$newAuthor = new Author(['name' => 'Jane Doe']);
$book->author()->save($newAuthor);
参考：
Database Seeding
Laravel の Database Seeding を mongoDB で使えるようになる
@App/Message.php
namespace App;
use Moloquent;
class Message extends Moloquent {
protected connection = 'mongodb';
protected collection = 'messages';
}
@MessagesSeeder.php
class MessagesSeeder extends Seeder
{
/**
* Run the database seeds.
*
* @return void
*/
public function run()
{
$message = new Message();
$message->body = "Seeded sample";
$message->user_id = 1;
$message->receiver_id = 2;
$message->read = 0;
$message->save();
$message = new Message();
$message->body = "Seeded sample2";
$message->user_id = 2;
$message->receiver_id = 1;
$message->read = 0;
$message->save();
デメリット
mongoDB の DBref が実装しにくい？？
mongoDB 同士の ref が標準機能としてパッケージに無いので、ref 元を Mysql ベースのデータベースにして Mysql Relations で妥協
