nylontechnology/belongstomanywithevents

Override of Laravel Eloquent BelongsToMany relationship to fire events on attach/detach operations

BelongsToManyWithEvents

Override of Laravel Eloquent BelongsToMany relationship to fire events on attach/detach operations, _(*1)

Install

$ composer require nylontechnology/belongstomanywithevents

Usage

1. Import into your model

use NylonTechnology\BelongsToManyWithEvents as BelongsToMany;

class User extends Model {
....

1. In your model, define what relationship events you want to observe

class User extends Model {

    protected $observables = [
        'attached.roles',
        'detached.roles'
    ];

    public function roles()
    {
        return $this->belongsToMany('App\Role');
    }

    ...

1. Create an observer and handle events however you wish

namespace App\Observers;

class ModelAuditObserver { 

    private function attached($observer_callback, $model, $ids) {}

        private function detached($observer_callback, $model, $ids) {}

        private function synced($observer_callback, $model, $ids) {}

        ...

1. Register your observer in AppServiceProvider boot() method

class AppServiceProvider extends ServiceProvider {

    public function boot() {
        App\User::observe(ModelAuditObserver::class);

    ...

Notes

sync() is a wrapper around attach() and detach() so generally you should only observe sync events or attach/detach, but not both unless you don't mind redundant events., _(*2)

Inspired by @andyberry88's gist, _(*3)