使用CodeIgniter 3中的Illuminate/Database Eloquent ORM进行多个数据库连接

Question

我刚刚将Laravel的数据库层Eloquent包含在我的CodeIgniter 3项目中.然而,我的问题是我无法使用Eloquent模型连接到多个数据库.

对于默认DB,这是我配置DB的方式:

$capsule = new Capsule;

$capsule->addConnection(array(
        'driver'    => 'mysql',
        'host'      => "localhost",
        'database'  => "employees_db",
        'username'  => "root",
        'password'  => "",
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => '',
        ));

$capsule->setAsGlobal();
$capsule->bootEloquent();

以上效果很好.但我有一个来自另一个数据库的员工表.我可以使用查询构建器来使用它,但是使用Eloquent模型会失败.

我试过这个:

$employees = new Capsule;

$employees->addConnection(array(
        'driver'    => 'mysql',
        'host'      => "host2",
        'database'  => "employees_db",
        'username'  => "user",
        'password'  => "pass",
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => '',
        ),'employees');

$employees->setAsGlobal();

尝试设置一个Eloquent模型并使用如下连接:

protected $connection = "employees";

是否可以使用Laravel之外的Illuminate\Database Eloquent ORM连接到多个数据库？如果有,怎么样？

Answer 1

雄辩的ORM只需要初始化一次.添加可选的第二个参数作为连接名称.

$capsule = new Capsule;

$capsule->addConnection(
    array(
        'driver'    => 'mysql',
        'host'      => "localhost",
        'database'  => "employees_db",
        'username'  => "root",
        'password'  => "",
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => '',
    ),
    "default"
);

$capsule->addConnection(
    array(
            'driver'    => 'mysql',
            'host'      => "192.168.1.1",
            'database'  => "employees_db2",
            'username'  => "user",
            'password'  => "password",
            'charset'   => 'utf8',
            'collation' => 'utf8_unicode_ci',
            'prefix'    => '',
    ),
    "employees"
        );

$capsule->setAsGlobal();
$capsule->bootEloquent();

设置完上述内容后,您可以通过编写以下代码来指定模型文件中要连接的数据库:

protected $connection = "employees";