Question

我有这个控制器类

<?php

namespace App\Controllers;

use Application\Controller;
use Application\FlightApplication;

class TestController extends Controller {

    public function test(){
       $this->app->logger->debug('test');
       echo 'test';
    }

}

扩展了这个类

<?php

namespace Application;

class Controller {

    public $app = null;

    public function __construct(){
        $this->app = FlightApplication::getInstance();
    }

}

当我运行这条路线时：

Flight::route('/test', array('App\Controllers\TestController','test'));

我收到此错误：

致命错误：不在对象上下文中时使用$ this

为什么？

这是FlightApplication类：

<?php

namespace Application;

class FlightApplication {

private static $instance = null;

public function __construct(){
    self::$instance = $this;
}

/**
 * 
 * @return \Application\FlightApplication
 */
public static function getInstance(){
    return self::$instance;
}

public function start(){
    \Flight::start();
}

}

Answer 1

你的单身人士错了。您永远不会实例化您的类，因此get函数始终返回NULL。您需要检查以实例化类

public static function getInstance(){
    if(!self::$instance) self::$instance = new self();
    return self::$instance;
}

此外，您应该从构造函数中取出设置

public function __construct(){
    self::$instance = $this; // Remove this line as your Singleton handles this
}

飞行php控制器类

1 个答案: