cheesegrits/laravel-pivot-events

This package introduces new eloquent events for sync(), attach(), detach() or updateExistingPivot() methods on BelongsToMany relation.

v1.0 2026-05-05 15:38 UTC

Requires

• illuminate/database: ^11.0|^12.0|^13.0

Requires (Dev)

• friendsofphp/php-cs-fixer: *
• orchestra/testbench: *

MIT

• Filip Horvat
• Hugh Messenger

• laravel pivot events
• laravel BelongsToMany events
• eloquent extra events
• laravel sync events
• eloquent events

README

This package introduces new eloquent events for sync(), attach(), detach() or updateExistingPivot() methods on BelongsToMany relation.

This package is based on the laravel-pivot package by Filip Horvat. The original package is abandoned and does not work with Laravel 13.

Laravel Problems

In Laravel events are not dispatched when a BelongsToMany relation (pivot table) is updated with sync(), attach(), detach() or updateExistingPivot() methods, but this package will help with that.

Version Compatibility

Compatible with Laravel 11.0 or higher.

Install

1.Install package with composer

composer require cheesegrits/laravel-pivot-events

With this statement, a composer will install highest available package version for your current laravel version.

2.Use Cheesegrits\Laravel\PivotEvents\Traits\PivotEventTrait trait in your base model or only in particular models.

use Cheesegrits\Laravel\PivotEvents\Traits\PivotEventTrait;
use Illuminate\Database\Eloquent\Model;

abstract class BaseModel extends Model
{
    use PivotEventTrait;
...

and that's it, enjoy.

New eloquent events

New events are :

pivotAttaching, pivotAttached
pivotDetaching, pivotDetached,
pivotUpdating, pivotUpdated

The best way to catch events is with a model observer:

use App\Models\YourModel;

class YourModelObserver
{
    public function saving(User $user)
    {
        //this is how we catch pivot events
    }
    
    public function pivotAttaching(function (YourModel $model, string $relationName, array $pivotIds, array $pivotIdsAttributes) {
        //
    });
    
    public function pivotAttached(function (YourModel $model, string $relationName, string $pivotIds, string $pivotIdsAttributes) {
        //
    });
    
    public function pivotDetaching(function (YourModel $model, string $relationName, string $pivotIds) {
        //
    });

    public function pivotDetached(function (YourModel $model, string $relationName, string $pivotIds) {
        //
    });
    
    public function pivotUpdating(function (YourModel $model, string $relationName, string $pivotIds, string $pivotIdsAttributes) {
        //
    });
    
    public function pivotUpdated(function (YourModel $model, string $relationName, string $pivotIds, string $pivotIdsAttributes) {
        //
    });
    
    public function updating(function (YourModel $model) {
        //this is how we catch standard eloquent events
    });
}

Or with a boot method:

use Cheesegrits\Laravel\PivotEvents\Traits\PivotEventTrait;
use Illuminate\Database\Eloquent\Model;

class YourModel extends Model
{
    use PivotEventTrait;
    
    public static function boot()
    {
        parent::boot();
    
        static::pivotAttaching(function (YourModel $model, string $relationName, array $pivotIds, array $pivotIdsAttributes) {
            //
        });
        
        // etc.
    }
}

You can also see those events here:

\Event::listen('eloquent.*', function ($eventName, array $data) {
    echo $eventName;  //e.g. 'eloquent.pivotAttached'
});

Supported relations

BelongsToMany and MorphToMany

Which events are dispatched and when they are dispatched

Four BelongsToMany methods dispatches events from this package:

attach()
Dispatches one pivotAttaching and one pivotAttached event.
Even when more rows are added only one event is dispatched for all rows but in that case, you can see all changed row ids in the $pivotIds variable, and the changed row ids with attributes in the $pivotIdsAttributes variable.

detach()
Dispatches one pivotDetaching and one pivotDetached event.
Even when more rows are deleted only one event is dispatched for all rows but in that case, you can see all changed row ids in the $pivotIds variable.

updateExistingPivot()
Dispatches one pivotUpdating and one pivotUpdated event.
You can change only one row in the pivot table with updateExistingPivot.

sync()
Dispatches more pivotAttaching and more pivotAttached events, depending on how many rows are added in the pivot table. These events are not dispatched if nothing is attached.
Dispatches one pivotDetaching and one pivotDetached event, but you can see all deleted ids in the $pivotIds variable. This event is not dispatched if nothing is detached.
Dispatches more pivotUpdating and more pivotUpdated events, depending on how many rows are updated in the pivot table. These events are not dispatched if nothing is attached.

E.g. when you call sync() if two rows are added and two are deleted two pivotAttaching and two pivotAttached events and one pivotDetaching and one pivotDetached event will be dispatched.
If sync() is called but rows are not added or deleted events are not dispatched.

Usage

We have three tables in database users(id, name), roles(id, name), role_user(user_id, role_id). We have two models :

class User extends Model
{
    use PivotEventTrait;
    // ...
    
    public function roles()
    {
        return $this->belongsToMany(Role::class);
    }
    
    public static function boot()
    {
        parent::boot();
        
        static::pivotAttached(function ($model, $relationName, $pivotIds, $pivotIdsAttributes) {
            echo 'pivotAttached';
            echo get_class($model);
            echo $relationName;
            print_r($pivotIds);
            print_r($pivotIdsAttributes);
        });
        
        static::pivotUpdated(function ($model, $relationName, $pivotIds, $pivotIdsAttributes) {
            echo 'pivotUpdated';
            echo get_class($model);
            echo $relationName;
            print_r($pivotIds);
            print_r($pivotIdsAttributes);
        });
        
        static::pivotDetached(function ($model, $relationName, $pivotIds) {
            echo 'pivotDetached';
            echo get_class($model);
            echo $relationName;
            print_r($pivotIds);
        });
    }

class Role extends Model
{
    // ...
}

Attaching

For attach() or detach() one event is dispatched for both pivot ids.

Attaching with int

Running this code

$user = User::first();
$user->roles()->attach(1);

You will see this output

pivotAttached
App\Models\User
roles
[1]
[1 => []]

Attaching with array

Running this code

$user = User::first();
$user->roles()->attach([1]);

You will see this output

pivotAttached
App\Models\User
roles
[1]
[1 => []]

Attaching with model

Running this code

$user = User::first();
$user->roles()->attach(Role::first());

You will see this output

pivotAttached
App\Models\User
roles
[1]
[1 => []]

Attaching with collection

Running this code

$user = User::first();
$user->roles()->attach(Role::get());

You will see this output

pivotAttached
App\Models\User
roles
[1, 2]
[1 => [], 2 => []]

Attaching with array (id => attributes)

Running this code

$user = User::first();
$user->roles()->attach([1, 2 => ['attribute' => 'test']], ['attribute2' => 'test2']);

You will see this output

pivotAttached
App\Models\User
roles
[1, 2]
[1 => [], 2 => ['attribute' => 'test', 'attribute2' => 'test2']]

Syncing:

For sync() method event is dispatched for each pivot row.

Running this code

$user = User::first();
$user->roles()->sync([1, 2]);

You will see this output

pivotAttached
App\Models\User
roles
[1]
[1 => []]

pivotAttached
App\Models\User
roles
[2]
[2 => []]

Detaching:

Running this code

$user = User::first();
$user->roles()->detach([1, 2]);

You will see this output

pivotDetached
App\Models\User
roles
[1, 2]

Updating:

Running this code

$user = User::first();
$user->roles()->updateExistingPivot(1, ['attribute' => 'test']);

You will see this output

pivotUpdated
App\Models\User
roles
[1]
[1 => ['attribute' => 'test']]

License

MIT

Free Software, Hell Yeah!