>我有以下代码
class FooBar
{
protected $delegate;
public function __construct( $delegate )
{
$this->delegate = $delegate;
}
}
App::bind('FooBar', function()
{
return new FooBar();
});
class HomeController extends BaseController
{
protected $fooBar;
public function __construct()
{
$this->fooBar = App::make('FooBar');
//HomeController needs to be injected in FooBar class
}
}
class PageController extends BaseController
{
protected $fooBar;
public function __construct()
{
$this->fooBar = App::make('FooBar');
// PageController needs to be injected in FooBar class
}
}
如何将 HomeController， PageController 作为 FooBar 类中的委托注入？
使用上面的代码，我得到缺少参数错误
Laravel中的依赖注入就是这么简单：
class FooBar
{
protected $delegate;
public function __construct( HomeController $delegate )
{
$this->delegate = $delegate;
}
}
App::bind('FooBar', function()
{
return new FooBar();
});
class HomeController extends BaseController
{
protected $fooBar;
public function __construct()
{
$this->fooBar = App::make('FooBar');
}
}
主控制器将作为$delegate进行实例化和注入。
编辑：
但是如果你需要实例化FooBar，将实例化器（你的控制器）传递给它，你必须这样做：
<?php
class FooBar
{
protected $delegate;
public function __construct( $delegate )
{
$this->delegate = $delegate;
/// $delegate here is HomeController, RegisterController, FooController...
}
}
App::bind('FooBar', function($app, $param)
{
return new FooBar($param);
});
class HomeController extends Controller {
protected $fooBar;
public function delegate()
{
$this->fooBar = App::make('FooBar', array('delegate' => $this));
}
}
试试这个。（http://laravel.com/docs/ioc#automatic-resolution）
class FooBar
{
protected $delegate;
public function __construct( HomeController $delegate )
{
$this->delegate = $delegate;
}
}
App::bind('FooBar', function($delegate)
{
return new FooBar;
});