fix: when uploading for a full group

app/Http/Controllers/Web/TradingController.php

@@ -9,6 +9,8 @@ use Maatwebsite\Excel\Facades\Excel;
 use App\Http\Resources\SubgroupResource;
 use App\Imports\TradingsImport;
 use App\Models\Subgroup;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Log;
 
 class TradingController extends Controller
 {
@@ -75,7 +77,18 @@ class TradingController extends Controller
             ]);
         }
 
-        $group->tradings()->whereLocale(app()->getLocale())->delete();
+        DB::beginTransaction();
+
+        try {
+            $group->tradings()->whereLocale(app()->getLocale())->delete();
+            $group->subgroups()->whereLocale(app()->getLocale())->delete();
+        } catch (\Throwable $th) {
+            Log::info($th);
+            DB::rollback();
+            return redirect()->route('tradings');
+        }
+
+        DB::commit();
 
         try {
             $id = now()->unix();

app/Models/Group.php

@@ -39,6 +39,11 @@ class Group extends Model
         return $this->hasMany(Import::class);
     }
 
+    public function subgroups()
+    {
+        return $this->hasMany(Subgroup::class);
+    }
+
     public function getFilenameAttribute()
     {
         $locale = app()->getLocale();