|string> */ public function rules(): array { return [ 'peti_id' => 'nullable', // Optional, peti_id harus ada di tabel petis 'source_warehouse' => 'nullable', // Optional, source_warehouse harus ada di tabel m_warehouses 'destination_warehouse' => 'nullable', // Optional, destination_warehouse harus ada di tabel m_warehouses 'name_customer' => 'nullable', // Optional, name_customer harus ada di tabel customers 'date' => 'nullable', // Optional, harus berupa tanggal ]; } }