Laravel DI在立面基础类中使用时不起作用 [英] Laravel DI not working when using in Facades Underlying Class

问题描述

这是我的外墙课程

<?php 

namespace App\Facades;

use Illuminate\Support\Facades\Facade;

class UserFacade extends Facade 
{
    protected static function getFacadeAccessor()
    {
        return 'user';
    }
}

这就是我绑定IOC的方式(不确定我是否使用正确的术语)

This is how i bind into IOC (Not sure if i am using correct terms)

<?php

namespace App\Providers;


use Illuminate\Support\ServiceProvider;
use Illuminate\Support\Facades\App;

class RUserServiceProvider extends ServiceProvider
{
    /**
     * Register the application services.
     *
     * @return void
     */
    public function register()
    {
        App::bind('user', function() {
            return new \App\Http\Responses\RUser;
        });
    }
}

这是底层类，其中包含用户实体的实际代码

This is the Underlying class that contains actual code for user entity

<?php 

namespace App\Http\Responses;

use Illuminate\Database\Eloquent\ModelNotFoundException;
use App\Utils\TokenGenerator;
use App\Models\User;
use Validator;
use Hash;

class RUser
{
    protected $token_generator;

    public function __construct(TokenGenerator $token_generator)
    {
        $this->token_generator = $token_generator;
    }

    /**
     * Signup User
     * @param  Request $request 
     * @return array $response
     */
    public function signup($data)
    {
        $response = [];
        $access_token = $this->token_generator->generate(32);
        $user = User::create([
            'email' => $data->email,
            'password' => Hash::make($data->password),
            'company_name' => $data->company_name,
            'access_token' => $access_token
        ]);
        $response['user_id'] = $user->_id;
        $response['access_token'] = $user->access_token;
        return $response;
    }
}

这就是我在UserController中使用RUser类的方式

And this is how i am using my RUser class in my UserController

<?php

namespace App\Http\Controllers;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use App\Models\User;
use Validator;
use FUser;

class UserController extends Controller
{
    /**
     * Signup User
     * @param  Request $request 
     * @return array $response
     */
    public function store(Request $request)
    {
        $this->request = $request;
        $payload = json_decode($this->request->getContent());
        if($this->validateJson('user.create', $payload)) {
            $validator = Validator::make((array) $payload, User::$rules);
            if ($validator->fails()) {
                $messages = $validator->errors();
                return $this->sendResponse(false, $messages);
            }

            $response = FUser::signup($payload);
            return $this->sendResponse(true, $response);
        }
    }
}

现在问题出在我的RUser类中，我希望Laravel自动注入TokenGenerator依赖关系，因为它通常会在Controller类中注入依赖关系.但是我不明白为什么它不这样做.

Now the problem is in my RUser class i am expecting Laravel to inject the TokenGenerator Dependency automatically as it normally inject dependencies in Controller classes. But i do not understand why it is not doing so.

这就是我得到的

RUser.php第15行中的

ErrorException:参数1传递给 App \ Http \ Responses \ RUser :: __ construct()必须是 App \ Utils \ TokenGenerator，未给出，调用 /var/www/html/MyApp/app/Providers/RUserServiceProvider.php，第29行 并定义

ErrorException in RUser.php line 15: Argument 1 passed to App\Http\Responses\RUser::__construct() must be an instance of App\Utils\TokenGenerator, none given, called in /var/www/html/MyApp/app/Providers/RUserServiceProvider.php on line 29 and defined

推荐答案

如果希望容器注入依赖项，则需要使用容器的make()方法，而不要使用本机new运算符:

If you want the container to inject dependencies, you need to use the container's make() method instead of the native new operator:

App::bind('user', function($app) {
    return $app->make('App\Http\Responses\RUser');
});

可以更简洁地写为:

App::bind('user', 'App\Http\Responses\RUser');

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