Laravel 拦截多参数 Artisan 事件

Posted 2023-03-14

【中文标题】Laravel 拦截多参数 Artisan 事件

【英文标题】：Laravel intercept multi-parameter Artisan event

【发布时间】：2020-11-21 11:18:05

【问题描述】：

在运行php artisan migrate --seed时，我想截取迁移完成和播种开始之间的时刻。

似乎在 Artisan 命令事件上附加侦听器只会捕获“***”命令：

Event::listen(CommandStarting::class, function (CommandStarting $event) use ($path) 
    echo "Start\n";
    echo $event->input;
);

Event::listen(CommandFinished::class, function (CommandFinished $event) use ($path) 
    echo "Finish\n";
    echo $event->input;
);

这将只输出migrate --seed 命令，与--seed 标志实际调用db:seed 命令这一事实无关：

if ($this->option('seed') && ! $this->option('pretend')) 
    $this->call('db:seed', ['--force' => true]);

是否有可能以某种方式在中间捕获该事件？

【参考方案1】：

我能够为此想出一些办法。

我创建了一个新的服务提供者并添加到config/app.php 列表中。

MigrationCommand 和 Migrator 发出各种events 其中之一是MigrationsEnded，因此与CommandStarting 一起获取argv 以查看是否给出了--seed。

<?php

namespace App\Providers;

use Event;
use Illuminate\Console\Events\CommandFinished;
use Illuminate\Console\Events\CommandStarting;
use Illuminate\Database\Events\MigrationsEnded;
use Illuminate\Support\ServiceProvider;

class CommandListenerProvider extends ServiceProvider

    public $isPretend = true;
    public $hasSeed = false;

    /**
     * Register services.
     *
     * @return void
     */
    public function register()
    
        //
    

    public function boot()
    
        Event::listen(CommandStarting::class, function (CommandStarting $event) 
            if ($event->input->hasParameterOption('migrate')
                && !$event->input->hasParameterOption('--pretend')
            ) 
                $this->isPretend = false;

                if ($event->input->hasParameterOption('--seed')) 
                    $this->hasSeed = true;
                
            
        );

        Event::listen(MigrationsEnded::class, function (MigrationsEnded $event) 
            // migration was successful and there was something done, i.e add or remove
            if ($this->hasSeed && !$this->isPretend) 
                dump('Finished migrating and --seed was requested, so do what you want here');
            
        );
    

例子：

$ php artisan migrate --seed  
"artisan started"
Migrating: 2021_06_17_191423_create_so_answer_table
Migrated:  2021_06_17_191423_create_so_answer_table (0.03 seconds)
Illuminate\Database\Events\MigrationsEnded #1964
"Finished migrating and --seed was requested, so do what you want here"
Database seeding completed successfully.