separate pivot model for each approach

src/Database/Concerns/ResourceSyncing.php

@@ -8,6 +8,7 @@ use Illuminate\Database\Eloquent\Relations\MorphToMany;
 use Stancl\Tenancy\Contracts\Syncable;
 use Stancl\Tenancy\Contracts\UniqueIdentifierGenerator;
 use Stancl\Tenancy\Database\Models\Tenant;
+use Stancl\Tenancy\Database\Models\TenantMorphPivot;
 use Stancl\Tenancy\Database\Models\TenantPivot;
 use Stancl\Tenancy\Events\SyncedResourceSaved;
 
@@ -50,7 +51,7 @@ trait ResourceSyncing
     public function tenants(): MorphToMany
     {
         return $this->morphToMany($this->getResourceTenantModelName(), 'tenant_resources', 'tenant_resources', 'resource_global_id', 'tenant_id', 'global_id')
-            ->using(TenantPivot::class);
+            ->using(TenantMorphPivot::class);
     }
 
     public function getResourceTenantModelName(): string // todo better name

src/Database/Models/TenantMorphPivot.php

@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stancl\Tenancy\Database\Models;
+
+use Illuminate\Database\Eloquent\Relations\MorphPivot;
+use Stancl\Tenancy\Contracts\Syncable;
+
+class TenantMorphPivot extends MorphPivot
+{
+    public static function booted(): void
+    {
+        static::saved(function (self $pivot) {
+            $parent = $pivot->pivotParent;
+
+            if ($parent instanceof Syncable && $parent->shouldSync()) {
+                $parent->triggerSyncEvent();
+            }
+        });
+    }
+}

src/Database/Models/TenantPivot.php

@@ -4,10 +4,10 @@ declare(strict_types=1);
 
 namespace Stancl\Tenancy\Database\Models;
 
-use Illuminate\Database\Eloquent\Relations\MorphPivot;
+use Illuminate\Database\Eloquent\Relations\Pivot;
 use Stancl\Tenancy\Contracts\Syncable;
 
-class TenantPivot extends MorphPivot
+class TenantPivot extends Pivot
 {
     public static function booted(): void
     {

tests/ResourceSyncingTest.php

@@ -4,7 +4,6 @@ declare(strict_types=1);
 
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
-use Illuminate\Database\Eloquent\Relations\MorphToMany;
 use Illuminate\Events\CallQueuedListener;
 use Illuminate\Support\Facades\Event;
 use Illuminate\Support\Facades\Queue;
@@ -824,10 +823,9 @@ function migrateUsersTableForTenants(): void
 
 class ResourceTenant extends Tenant
 {
-    public function users(): MorphToMany
+    public function users(): BelongsToMany
     {
-        return $this->morphedByMany(CentralUserForPolymorphic::class, 'tenant_resources', 'tenant_resources', 'tenant_id', 'resource_global_id', 'id', 'global_id')
-            ->using(TenantPivot::class);
+        return $this->belongsToMany(CentralUser::class, 'tenant_users', 'tenant_id', 'global_user_id', 'id', 'global_id');
     }
 }
 
@@ -841,10 +839,10 @@ class CentralUser extends Model implements SyncMaster
 
     public $table = 'users';
 
-    // override method to provide different tenant
-    public function getResourceTenantModelName(): string
+    public function tenants(): BelongsToMany
     {
-        return ResourceTenant::class;
+        return $this->belongsToMany(ResourceTenant::class, 'tenant_users', 'global_user_id', 'tenant_id', 'global_id')
+            ->using(TenantPivot::class);
     }
 
     public function getTenantModelName(): string