FilamentF
Filament•15mo ago
1benjam1

Custom rule based on another field - Good way or not ?

I'm implementing a custom rule that verify that two dates are in the same year.

Custom Laravel Rule

final class SameYearAs implements ValidationRule
{
    public function __construct(private mixed $toCompareWith)
    {}

    public function validate(string $attribute, mixed $value, Closure $fail): void
    {
        $toCompareWith = $this->toCompareWith;
        if (filled($toCompareWith)) {
            $value = CarbonImmutable::parse($value);
            $toCompareWith = CarbonImmutable::parse($toCompareWith);

            if (!$value->isSameYear($toCompareWith)) {
                $fail('Not similar year!');
            }
        }
    }
}

Filament Form schema()
Forms\Components\DatePicker::make('start_at')
    ->label(__('Start at'))
    ->beforeOrEqual('end_at')
    ->required(),
Forms\Components\DatePicker::make('end_at')
    ->label(__('End at'))
    ->afterOrEqual('start_at')
    ->rules(fn (Get $get) => [new SameYearAs($get('start_at'))])
    ->required(),


It works, but is that right do it like that ?

I started using DataAwareRule but the problem is that the form data are stored in a "sub-array" and therefore if I use $this->data['data']['field-name'] the rule will works with Filament (Livewire?) but not in another classic class like a Controller.

array:19 [▼
  "data" => array:34 [▶]
  "previousUrl" => "http://admin.nanou.test/admin/missions"
  "mountedActions" => []
  "mountedActionsArguments" => []
  "mountedActionsData" => []
  "defaultAction" => null
  "defaultActionArguments" => null
  "componentFileAttachments" => []
  "mountedFormComponentActions" => []
  "mountedFormXXXX"...
  "activeRelationManager" => "2"
  "record" => array:29 [▶]
  "savedDataHash" => null
]
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