如何解决Symfony项目中的命令处理问题？使用Composer和league/tactician-bundle可以！

<code class="bash">composer require league/tactician-bundle</code>

<code class="php"><?php
// app/AppKernel.php

class AppKernel extends Kernel
{
    public function registerBundles()
    {
        $bundles = array(
            // ...
            new League\Tactician\Bundle\TacticianBundle(),
        );

        // ...
    }

    // ...
}</code>

<code class="yaml">services:
    app.your_controller:
        class: AppBundle\Controller\YourNameController
        arguments:
            - '@tactician.commandbus'</code>

<code class="php"><?php namespace AppBundle\Controller;

use League\Tactician\CommandBus;
use AppBundle\Commands\DoSomethingCommand;

class YourNameController
{
    private $commandBus;

    public function __construct(CommandBus $commandBus)
    {
        $this->commandBus = $commandBus;
    }

    public function doSomething()
    {
        $command = new DoSomethingCommand();
        $this->commandBus->handle($command);
    }
}</code>

<code class="yaml">foo.user.register_user_handler:
    class: Foo\User\RegisterUserHandler
    arguments:
        - '@foo.user.user_repository'
    tags:
        - { name: tactician.handler, command: Foo\User\RegisterUserCommand }</code>

<code class="yaml">foo.user.register_user_handler:
    class: Foo\User\RegisterUserHandler
    arguments:
        - '@foo.user.user_repository'
    tags:
        - { name: tactician.handler, typehints: true }</code>

<code class="yaml">tactician:
    commandbus:
        default:
            middleware:
                - tactician.middleware.validator
                - tactician.middleware.command_handler</code>

<code class="yaml">tactician:
    commandbus:
        default:
            middleware:
                - tactician.middleware.validator
                - tactician.middleware.command_handler
        accounting:
            middleware:
                - tactician.middleware.locking
                - some.middleware.service.to.call.the.remote.accounting.app
                - tactician.commandbus.accounting.middleware.command_handler</code>