[Laravel]：我如何将依赖项注入由其他 classes(jobs) 扩展的抽象 class

Question

我有一个 Laravel 项目，我在其中创建了一个摘要 class，我的几个作业将使用它，因为它们都需要使用相同的方法来查找一些数据以继续。

在 Laravel 中，作业的工作方式是构造函数采用您触发作业的任何值，并且在处理程序方法中，可以注入依赖项，如下所示：

class SomeJob extends Job implements ShouldQueue
{
    public function __construct(array $someData, int $someMoreData)
    {
        $this->someData     = $someData;
        $this->someMoreData = $someMoreData;
    }

    public function handle()
    {
        // Do something...
    }
}


\Queue::pushOn(Queue::getDefaultQueue(), new SomeJob([1, 2, 3], 4));

这意味着我不能只将依赖项从扩展 class' 构造函数传递到抽象 class 中。据我所知，解决它的唯一方法是在抽象 class 上有一个属性，然后在扩展的 class.

的处理程序方法中设置它

abstract class SomeAbstractClass extends Job implements ShouldQueue
{
    use InteractsWithQueue, SerializesModels;

    protected $configOne;
    protected $configTwo;
    protected $userRepository;

    public function __construct()
    {
        $this->configOne = config('someConfig.valueOne');
        $this->configTwo = config('someConfig.valueTwo');
    }

    public function doSomethingWithUserRepository()
    {
        return $this->userRepository->doSomething();
    }
}

class SomeClass extends SomeAbstractClass
{
    public function __construct(array $someData, int $someMoreData)
    {
        parent::__construct();

        $this->someData     = $someData;
        $this->someMoreData = $someMoreData;
    }

    public function handle(UserRepository $userRepository)
    {
        $this->userRepository = $userRepository;
    }
}

这按预期工作，但似乎不是正确的方法。即使它有效，它似乎也有点老套。有办法解决这个问题吗？这一定是一个非常普遍的问题，也在 Laravel.

之外

Answer 1

因为在Laravel中的jobs中使用了定义的构造函数来传递数据，所以在这种情况下，你必须将handle()视为"constructor"方法。

考虑这个例子：

<?php
abstract class SomeAbstractClass extends Job implements ShouldQueue
{
    use InteractsWithQueue, SerializesModels;

    protected $configOne;
    protected $configTwo;
    protected $userRepository;

    public function __construct()
    {
        $this->configOne = config('someConfig.valueOne');
        $this->configTwo = config('someConfig.valueTwo');
    }

    public function handle(UserRepository $userRepository)
    {
        $this->userRepository = $userRepository;
    }

    protected function doSomethingWithUserRepository()
    {
        return $this->userRepository->doSomething();
    }
}

class SomeClass extends SomeAbstractClass
{
    public function __construct(array $someData, int $someMoreData)
    {
        parent::__construct();
        $this->someData     = $someData;
        $this->someMoreData = $someMoreData;
    }

    public function handle(UserRepository $userRepository)
    {
        parent::handle($userRepository);

        // you can do whatever you liiike
        $this->doSomethingWithUserRepository();
    }
}

[Laravel]：我如何将依赖项注入由其他 classes(jobs) 扩展的抽象 class

[Laravel]: How do I dependency inject into an abstract class extended by other classes(jobs)

php

dependency-injection

abstract

solid-principles

laravel