Question

Below are 4 related posts I could find on Stack Overflow:

• Validation Error: Value is not valid
• Validation error value is not valid
• Jsf : Validation error value is not valid for SelectOneMenu
• JSF with Enum ‘Validation Error: Value is not valid’

In these posts, the posters didn’t know why they had this error message. In my case, I do know why I have this error, and I would like to change the default “Validation Error: Value is not valid” message to let’s say “This is my message”. How could I achieve this?

PS1: I already tried the requiredMessage, validatorMessage and converterMessage attributes, but none of them get called in this special case.

PS2: I’m using RichFaces 4.1.0, so the drop-down list I’m using is the rich:select one.

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Scenario:

1. I have two entities, for example employers and employees.
2. I create the employee employee1.
3. I want to create the employer employer1, and link it to the employee1 via a drop-down list.
4. Before submitting the employer creation form, I delete the employee1 from the database.
5. Then, I submit the employer creation form: the said message appears next to the drop-down list, since the employee1 isn’t available anymore.

This behavior is the one I expected, but I just would like to change the default message to another one, more user-friendly.

Answer 1

Supply a custom converter and throw it as converter exception in getAsObject().

Basically,

@Override
public Object getAsObject(FacesContext context, UIComponent component, String submittedValue) {
    if (submittedValue == null || submittedValue.isEmpty()) {
        return null;
    }

    Employee employee = findEmployeeInDatabase(submittedValue);

    if (employee == null) {
        throw new ConverterException("Sorry, unknown employee.");
    }
    else {
        return employee;
    }
}

Note that this also enables you to use converterMessage.