Filament: Visible or Hidden Fieldset Based on Other Field

If you want to show/hide the Fieldset based on value of another form field, you need to add ->live() to that field and add visible() or hidden() to the Fieldset with the condition.

That condition has $get() parameter that contains all the current values of the form, so you can check them and show/hide the Fieldset.

app/Filament/Resources/PropertyResource.php:

use App\Enum\PropertyType;
 
// ...
 
Forms\Components\Radio::make('property_type')
    ->options(PropertyType::class)
    ->default(PropertyType::SALE)
    ->inline()
    ->inlineLabel(false)
    ->live(), 
Forms\Components\Fieldset::make('Sale Pricing')
    ->label('Pricing')
    ->visible(function (Forms\Get $get) { 
        return $get('property_type') == PropertyType::SALE; 
    }) 
    ->schema([
        Forms\Components\TextInput::make('sale_price'),
        Forms\Components\TextInput::make('down_payment'),
    ]),
Forms\Components\Fieldset::make('Rent Pricing')
    ->label('Pricing')
    ->visible(function (Forms\Get $get) { 
        return $get('property_type') == PropertyType::RENT; 
    }) 
    ->schema([
        Forms\Components\TextInput::make('rent_price'),
        Forms\Components\TextInput::make('deposit'),
    ]),

Additionally, this example contains Enum class for PropertyType, so if you're curious about this one:

app/Enum/PropertyType.php:

namespace App\Enum;
 
use Filament\Support\Contracts\HasLabel;
 
enum PropertyType: string implements HasLabel
{
    case SALE = 'sale';
    case RENT = 'rent';
 
    public function getLabel(): string
    {
        return match ($this) {
            self::SALE => 'Sale',
            self::RENT => 'Rent',
        };
    }
}