Thymeleaf - Spring . Accessing a object property inside another object

Question

I have this classes

public class Guardian {

    public Guardian() {
        super();
    }

    private Long id;

    private String name;
..
}

public class AlarmNotification {


    private Long id;


    private Guardian guardian;
}

and in my Thymeleaf template

<td class="col_name" th:text="${alarmNotification.guardian.name}"></td>

But I got this Exception

org.springframework.expression.spel.SpelEvaluationException: EL1007E: Property or field 'name' cannot be found on null

Answer 1

guardian is null. Add ternary operator for processing this case :

<td class="col_name" th:text="${alarmNotification.guardian == null ? '' : alarmNotification.guardian.name}"/>