Import Action Relation with OptionForm

    public static function getOptionsFormComponents(): array
    {
        return [
            Select::make('school_id')
                ->relationship('school', 'name')
                ->searchable()
                ->required()
                ->preload(),

        ];
    }

   public function resolveRecord(): ?Siswa
    {
        if ($this->options['school_id'] ?? false) {
            return Sekolah::firstOrNew([
                'school_id' => $this->data['school_id'],
            ]);
        }

        return new Siswa();
    }

Undefined array key "school_id"