fixes

app/Models/Shop/Unity.php

@@ -3,9 +3,14 @@
 namespace App\Models\Shop;
 
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+use Znck\Eloquent\Traits\BelongsToThrough;
 
 class Unity extends Model
 {
+	use BelongsToThrough, softDeletes;
+
 	protected $guarded = ['id']; 
 	protected $table = 'shop_unities';
 
@@ -14,6 +19,11 @@ class Unity extends Model
 		return $this->belongsTo('App\Models\Shop\Package');
 	}
 
+	public function article_family()
+	{
+		return $this->belongsToThrough('App\Models\Shop\ArticleFamily', 'App\Models\Shop\Package', null, '', ['App\Models\Shop\ArticleFamily' => 'article_family_id', 'App\Models\Shop\Package' => 'package_id']);
+	}
+
 	public function scopeByPackage($query, $id)
 	{
 		return $query->where('package_id', $id);