Handle events on attach, detach or sync in Many To Many Laravel Eloquent Relationships (ok)

C:\xampp\htdocs\hanam.com\routes\web.php

<?php

use Illuminate\Support\Facades\Route;

/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
 */

Route::get('/', function () {
  return view('welcome');
});
Auth::routes();

Route::get('/home', 'HomeController@index')->name('home');
// Route::get('/user', function(){
//   factory(\App\User::class,5)->create();
// });
Route::get('/user', function () {
	// $user  = factory(\App\User::class)->create();
	// \App\Address::create([
	// 	"user_id" => $user->id,
	// 	"country" => "Ha Nam 10"
	// ]);
	// $user->address()->create([
	// 	"country" => "Ha Nam 9"
	// ]);
  // $users = \App\User::all();
  // $addresses = \App\Address::all();
  // $users = \App\User::with('addresses')->get();
  // $users = \App\User::get();
  // Hoặc dùng cách khác 
  // $users = \App\User::with('posts')->get();
  // $users = \App\User::has('posts','>=',2)->with('posts')->get();
  // $users = \App\User::whereHas('posts',function($query) {
  // 	$query->where('title','like','%Post 2%');
  // })->with('posts')->get();
  $users = \App\User::doesntHave('posts')->with('posts')->get();
  // $users[0]->posts()->create([
  // 	"title" => "Post 1 Test"
  // ]);
  // $users[2]->posts()->create([
  // 	"title" => "Post 2 Test"
  // ]);
  return view('users.index', compact('users'));
});
Route::get('/posts', function () {
	// \App\Post::create([
	// 	'user_id' => 1,
	// 	'title' => 'Post title 1'
	// ]);
	// $posts = \App\Post::get();
  // \App\Tag::create([
  //   'name' => 'Lavarel'
  // ]);
  // \App\Tag::create([
  //   'name' => 'PHP'
  // ]);
  // \App\Tag::create([
  //   'name' => 'Javascript'
  // ]);
  // \App\Tag::create([
  //   'name' => 'VueJs'
  // ]);
  // $tag = \App\Tag::first();
  // $post = \App\Post::first();
  // $post = \App\Post::with('tags')->first();
  // $post->tags()->attach($tag);
  // $post->tags()->attach([1,2,3,4]); 
  // $post->tags()->sync([1,2,3,4]);
  // $post->tags()->detach([1]);
  $post  = \App\Post::first();
  $posts = \App\Post::with(['user','tags'])->get();
  $post->tags()->detach([
    1 => [
      'status' => 'approved'
    ]
  ]);
  // dd($post->tags->first()->pivot->status);
  // Post::delete();
	return view('posts.index',compact('posts'));
});
Route::get('/tags', function () {
  $tags = \App\Tag::with("posts")->get();
  return view('tags.index',compact('tags'));
});

C:\xampp\htdocs\hanam.com\resources\views\posts\index.blade.php

@extends('layouts.app')
@section('content')
<div class="row justify-content-center">
	<div class="col-md-8">
		<div class="card">
			@foreach ($posts as $post)
				<h1>{{$post->title}}</h1>
				<p>{{ $post->user->name }}</p>
				<ul>
					<li>
						@foreach ($post->tags as $tag)
							<li>{{$tag->name}}&nbsp;{{ $tag->pivot->created_at->diffForHumans() }}</li>
						@endforeach
					</li>
				</ul>
			@endforeach
		</div>
	</div>
</div>
@endsection

C:\xampp\htdocs\hanam.com\app\PostTag.php

<?php
namespace App;
use Illuminate\Database\Eloquent\Relations\Pivot;
class PostTag extends Pivot {
  protected $table = 'post_tag';
  public static function boot() {
  	parent::boot();
  	static::created(function($item) {
  		dd($item);
  	});
  	static::deleted(function($item) {
  		dd($item);
  	});
  }
}

C:\xampp\htdocs\hanam.com\app\Post.php

<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Post extends Model {
  protected $fillable = ['user_id','title'];
  public function user() {
  	return $this->belongsTo(User::class)->withDefault([
  		'name' => 'Guest User'
  	]);
  }
  public function tags() {
  	// return $this->belongsToMany(Tag::class,'post_tag','post_id','tag_id');
  	// return $this->belongsToMany(Tag::class)->withTimestamps();
    return $this->belongsToMany(Tag::class)
    ->using(PostTag::class)
    ->withTimestamps()
    ->withPivot('status');
  }
}

Kết quả cho event created

Kết quả cho event deleted