refactor: Group sub-classification table entries by classification name and set it as the default group.

app/Filament/Resources/Master/SubClassifications/SubClassificationResource.php

@@ -25,6 +25,7 @@
 use Filament\Tables\Columns\TextColumn;
 use Filament\Tables\Columns\ToggleColumn;
 use Filament\Tables\Filters\TrashedFilter;
+use Filament\Tables\Grouping\Group;
 use Filament\Tables\Table;
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\SoftDeletingScope;
@@ -73,11 +74,6 @@ public static function table(Table $table): Table
     {
         return $table
             ->columns([
-                TextColumn::make('classification.name')
-                    ->label('Klasifikasi')
-                    ->searchable()
-                    ->sortable(),
-
                 TextColumn::make('name')
                     ->label('Nama')
                     ->searchable()
@@ -123,7 +119,13 @@ public static function table(Table $table): Table
             ->emptyStateIcon(Heroicon::QueueList)
             ->emptyStateDescription('Setelah Anda membubat data pertama, maka akan muncul disini.')
             ->defaultSort('created_at', 'desc')
-            ->deferFilters(false);
+            ->deferFilters(false)
+            ->groups([
+                Group::make('classification.name')
+                    ->label('Klasifikasi')
+                    ->collapsible(),
+            ])
+            ->defaultGroup('classification.name');
     }
 
     public static function getPages(): array