Enhance item description field to auto-populate based on selected item ID

app/Filament/Resources/StickerMasterResource.php

@@ -18,6 +18,7 @@ use Filament\Tables\Table;
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\SoftDeletingScope;
 use Filament\Forms\Get;
+use Filament\Forms\Set;
 use Filament\Tables\Actions\ExportAction;
 use Filament\Tables\Actions\ImportAction;
 // use Illuminate\Validation\Rule;
@@ -153,10 +154,24 @@ class StickerMasterResource extends Resource
            ->hint(fn ($get) => $get('item_error') ? $get('item_error') : null)
            ->hintColor('danger'),
 
-
             Forms\Components\TextInput::make('item_description')
                 ->label('Description')
                 ->required()
+                ->afterStateHydrated(function ($component, $state, Get $get, Set $set) {
+                    if ($get('id')) {
+                        $itemId = StickerMaster::where('id', $get('id'))->first()?->item_id;
+                        if ($itemId) {
+                            $item = \App\Models\Item::where('id', $itemId)->first()?->description;
+                            if ($item) {
+                                $set('item_description', $item);
+                            } else {
+                                $set('item_description', null);
+                            }
+                        } else {
+                            $set('item_description', null);
+                        }
+                    }
+                })
                 ->reactive()
                 ->readOnly(true),