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                ## 多站點,多數據庫 ### 第一步、定義數據庫鏈接 *config/database.php* ``` <?php return [ 'default' => 'mysql', 'connections' => [ # 主要數據庫連接 'mysql' => [ 'driver' => 'mysql', 'host' => 'host1', 'database' => 'database1', 'username' => 'user1', 'password' => 'pass1', 'charset' => 'utf8mb4', 'collation' => 'utf8mb4_unicode_ci', 'prefix' => '', ], # 第二個鏈接 'mysql2' => [ 'driver' => 'mysql', 'host' => 'host2', 'database' => 'database2', 'username' => 'user2', 'password' => 'pass2', 'charset' => 'utf8mb4', 'collation' => 'utf8mb4_unicode_ci', 'prefix' => '', ] ], ]; ``` ### 第二步、連接第二個數據庫 我們已經成功配置了第二個數據庫鏈接,接下來講解幾種連接的方法。 #### 1. Schema 表結構更改 在代碼遷移時,可以使用 Schema 提供的 connection() 方法: 可以依次進行多個數據庫的遷移 ``` Schema::connection('mysql2')->create('some_table', function($table) { $table->increments('id'): }); ``` #### 2. Query 數據庫查詢 同樣的,數據庫查詢構造器里提供了一個 connection() 方法: ``` $users = DB::connection('mysql2')->select(...); ``` #### 3. Eloquent 數據模型 使用 $connection 屬性來設置默認的連接: 可以根據域名設置默認數據庫 ``` <?php class SomeModel extends Eloquent { protected $connection = 'mysql2'; } ``` 你也可以使用 setConnection 來動態設置連接: ``` <?php class SomeController extends BaseController { public function someMethod() { $someModel = new SomeModel; $someModel->setConnection('mysql2'); $something = $someModel->find(1); return $something; } } ```
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