octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true">Laravel Relationship Events

use Chelout\RelationshipEvents\Concerns\HasOneEvents;
use Illuminate\Database\Eloquent\Model;

class User extends Model
{
    use HasOneEvents;

    public static function boot()
    {
        parent::boot();

        /**
         * One To One Relationship Events
         */
        static::hasOneSaved(function ($parent, $related) {
            dump('hasOneSaved', $parent, $related);
        });

        static::hasOneUpdated(function ($parent, $related) {
            dump('hasOneUpdated', $parent, $related);
        });
    }

}

use Chelout\RelationshipEvents\Concerns\HasMorphToManyEvents;
use Illuminate\Database\Eloquent\Model;

class Post extends Model
{
    use HasMorphToManyEvents;

    public static function boot()
    {
        parent::boot();

        /**
         * Many To Many Polymorphic Relations Events.
         */
        static::morphToManyAttached(function ($relation, $parent, $ids, $attributes) {
            dump('morphToManyAttached', $relation, $parent, $ids, $attributes);
        });

        static::morphToManyDetached(function ($relation, $parent, $ids) {
            dump('morphToManyDetached', $relation, $parent, $ids);
        });
    }

    public function tags()
    {
        return $this->morphToMany(Tag::class, 'taggable');
    }

}

use Chelout\RelationshipEvents\Concerns\HasOneEvents;
use Chelout\RelationshipEvents\Traits\HasDispatchableEvents;
use Illuminate\Database\Eloquent\Model;

class User extends Model
{
    use HasDispatchableEvents;
    use HasOneEvents;

    protected $dispatchesEvents = [
        'hasOneSaved' => HasOneSaved::class,
    ];

}

namespace App\Observer;

class UserObserver
{
    /**
     * Handle the User "hasOneCreating" event.
     *
     * @param \App\Models\User $user
     * @param \Illuminate\Database\Eloquent\Model $related
     *
     * @return void
     */
    public function hasOneCreating(User $user, Model $related)
    {
        Log::info("Creating profile for user {$related->name}.");
    }

    /**
     * Handle the User "hasOneCreated" event.
     *
     * @param \App\Models\User $user
     * @param \Illuminate\Database\Eloquent\Model $related
     *
     * @return void
     */
    public function hasOneCreated(User $user, Model $related)
    {
        Log::info("Profile for user {$related->name} has been created.");
    }
}

namespace App\Providers;

use App\Models\User;
use App\Observers\UserObserver;
use Illuminate\Support\ServiceProvider;

class AppServiceProvider extends ServiceProvider
{
// ...
    public function boot()
    {
        User::observe(UserObserver::class);
    }
// ...
}

// ...
$user = factory(User::class)->create([
    'name' => 'John Smith',
]);

// Create profile and assosiate it with user
// This will fire two events hasOneCreating, hasOneCreated
$user->profile()->create([
    'phone' => '8-800-123-45-67',
    'email' => '[email protected]',
    'address' => 'One Infinite Loop Cupertino, CA 95014',
]);
// ...