panel-pelican-dev/app/Filament/Resources/NodeResource/Pages/EditNode.php

<?php

namespace App\Filament\Resources\NodeResource\Pages;

use App\Filament\Resources\NodeResource;
use App\Models\Node;
use Filament\Actions;
use Filament\Forms;
use Filament\Forms\Components\Tabs;
use Filament\Resources\Pages\EditRecord;
use Illuminate\Support\HtmlString;
use Webbingbrasil\FilamentCopyActions\Forms\Actions\CopyAction;

class EditNode extends EditRecord
{
    protected static string $resource = NodeResource::class;

    public function form(Forms\Form $form): Forms\Form
    {
        return $form->schema([
            Tabs::make('Tabs')
                ->columns([
                    'default' => 2,
                    'sm' => 3,
                    'md' => 3,
                    'lg' => 4,
                ])
                ->persistTabInQueryString()
                ->columnSpanFull()
                ->tabs([
                    Tabs\Tab::make('Basic Settings')
                        ->icon('tabler-server')
                        ->schema((new CreateNode())->form($form)->getComponents()),
                    //                    Tabs\Tab::make('Advanced Settings')
                    //                        ->icon('tabler-server-cog')
                    //                        ->schema([
                    //                            Forms\Components\Placeholder::make('Coming soon!'),
                    //                        ]),
                    Tabs\Tab::make('Configuration')
                        ->icon('tabler-code')
                        ->schema([
                            Forms\Components\Placeholder::make('instructions')
                                ->columnSpanFull()
                                ->content(new HtmlString('
                                  Save this file to your <span title="usually /etc/pelican/">daemon\'s root directory</span>, named <code>config.yml</code>
                            ')),
                            Forms\Components\Textarea::make('config')
                                ->label('/etc/pelican/config.yml')
                                ->disabled()
                                ->rows(19)
                                ->hintAction(CopyAction::make())
                                ->columnSpanFull(),
                        ]),
                ]),
        ]);
    }

    protected function mutateFormDataBeforeFill(array $data): array
    {
        $node = Node::findOrFail($data['id']);

        $data['config'] = $node->getYamlConfiguration();

        return $data;
    }

    protected function getSteps(): array
    {
        return [
        ];
    }

    protected function getHeaderActions(): array
    {
        return [
            Actions\DeleteAction::make()
                ->disabled(fn (Node $node) => $node->servers()->count() > 0)
                ->label(fn (Node $node) => $node->servers()->count() > 0 ? 'Node Has Servers' : 'Delete'),
        ];
    }
}