create many to many relation between rahdaran and road item

app/Models/Rahdaran.php

@@ -4,6 +4,7 @@ namespace App\Models;
 
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 
 class Rahdaran extends Model
 {
@@ -11,4 +12,10 @@ class Rahdaran extends Model
 
     protected $guarded = [];
     protected $table = 'rahdaran';
+    protected $hidden = ['pivot'];
+
+    public function roadItemsProject(): BelongsToMany
+    {
+        return $this->belongsToMany(RoadItemsProject::class,'rahdaran_road_items_project');
+    }
 }