[英]PHP-DI does not inject the required class
我正在根据做依赖注入使用php-di。 请求首先到达配置php-di的route.php文件(例如,在需要IAccountService
时使用AccountService
),然后要求容器创建适当的控制器。 route.php的源代码如下:
<?php
spl_autoload_register(function ($class_name) {
switch ($class_name){
case 'AccountController':
require_once 'controllers/account_controller.php';
break;
case 'AccountService':
case 'IAccountService':
require_once 'services/account_service.php';
break;
case 'URLHELPER':
require_once 'helpers/URLHELPER.php';
break;
case 'STRINGHELPER':
require_once 'helpers/STRINGHELPER.php';
break;
case 'STRINGHELPER':
require_once "helpers/HASHHELPER.php";
break;
}
});
function call($controller, $action) {
$container = DI\ContainerBuilder::buildDevContainer();
$container->set('IAccountService', \DI\object('AccountService'));
// require the file that matches the controller name
require_once('controllers/' . $controller . '_controller.php');
// create a new instance of the needed controller
switch($controller) {
case 'home':
$controller = $container->get('HomeController');
case 'account':
$controller = $container->get('AccountController');
break;
}
// call the action
$controller->{ $action }();
}
// just a list of the controllers we have and their actions
// we consider those "allowed" values
$controllers = array(
'home' => ['index', 'error']
,'account' => ['login']
);
// check that the requested controller and action are both allowed
// if someone tries to access something else he will be redirected to the error action of the pages controller
if (array_key_exists($controller, $controllers)) {
if (in_array($action, $controllers[$controller])) {
call($controller, $action);
} else {
call('home', 'error');
}
} else {
call('home', 'error');
}
?>
现在提到这一行$controller = $container->get('AccountController');
选择了AccountController
位置。 在此之后,我得到了错误。
AccountController
的源代码:
<?php
class AccountController {
private $accountService;
public function __construct(IAccountService $accountService) {
echo $accountService == null;
$this->accountService = $accountService;
}
public function login() {
if(isset($_POST) && isset($_POST["email"]) && isset($_POST["password"])){
$loginResult = $this->$accountService->login($_POST["email"], $_POST["password"]);
if($loginResult){
$this->URLHELPER::redirectToAction("home", "index");
die;
}
else{
echo "Oops! this Email and Password combination not found";
}
}
require_once('views/account/login.php');
}
}
?>
似乎DI没有注入AccountService
,并且错误如下:
注意:未定义的变量:第13行/opt/lampp/htdocs/UMTest/controllers/account_controller.php中的accountService
注意:第13行的/opt/lampp/htdocs/UMTest/controllers/account_controller.php中的Undefined属性:AccountController :: $
致命错误:未捕获错误:在/opt/lampp/htdocs/UMTest/controllers/account_controller.php:13中,对成员函数login()的null进行调用:堆栈跟踪:#0 /opt/lampp/htdocs/UMTest/routes.php (40):AccountController-> login()#1 /opt/lampp/htdocs/UMTest/routes.php(54):call(Object(AccountController),'login')#2 / opt / lampp / htdocs / UMTest / views / layout.php(10):require_once('/ opt / lampp / htdo ...')#3 /opt/lampp/htdocs/UMTest/index.php(36):require_once('/ opt / lampp / htdo ...')#4 {main}在第13行的/opt/lampp/htdocs/UMTest/controllers/account_controller.php中抛出
我的错误在哪里?
要访问属性,您必须使用$this->accountService
而不是$this->accountService
$this->$accountService
在login()
以下一行更改
$loginResult = $this->$accountService->login($_POST["email"], $_POST["password"]);
至
$loginResult = $this->accountService->login($_POST["email"], $_POST["password"]);
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