'required|integer|exists:equipments,id', 'year_month' => 'required|string', 'cycle' => 'nullable|string|in:daily,weekly,monthly,bimonthly,quarterly,semiannual', 'overall_judgment' => 'nullable|string|in:OK,NG', 'inspector_id' => 'nullable|integer|exists:users,id', 'repair_note' => 'nullable|string', 'issue_note' => 'nullable|string', ]; } }