Loading foreign key value while update

app/Filament/Resources/BlockResource.php

@@ -7,6 +7,7 @@ use App\Filament\Resources\BlockResource\Pages;
 use App\Models\Block;
 use Filament\Forms;
 use Filament\Forms\Form;
+use Filament\Forms\Get;
 use Filament\Resources\Resource;
 use Filament\Tables;
 use Filament\Tables\Actions\ImportAction;
@@ -58,6 +59,7 @@ class BlockResource extends Resource
                             // ->unique(ignoreRecord: true)
                             ->required()
                             ->reactive()
+                            ->disabled(fn (Get $get) => !empty($get('id')))
                             ->afterStateUpdated(function ($state, callable $set, callable $get) {
                                 $nameId = $get('plant_id');
                                 // Ensure `linestop_id` is not cleared
@@ -75,6 +77,9 @@ class BlockResource extends Resource
                             ])
                             ->hint(fn ($get) => $get('bPlantError') ? $get('bPlantError') : null)
                             ->hintColor('danger'),
+                        Forms\Components\TextInput::make('id')
+                            ->hidden()
+                            ->readOnly(),
                         ])
                     ->columns(2),
             ]);