Question

I am making a web application using JBoss Seam 2.2.0, and I want to trim my inputs before receiving them, even before the Hibernate Bean Validation phase. Is this possible?

I saw someone using a PhaseListener to do the same functionality. Is this the best way to do it?

Answer 1

I use a Converter for this. Works very well.

Page:

<h:inputText value="#{myBean.myValue}" converter="#{stringTrimConverter}"/>

Code:

@Name("stringTrimConverter")
@BypassInterceptors
@Converter
public class StringTrimConverter implements javax.faces.convert.Converter {

    public Object getAsObject(FacesContext context, UIComponent cmp, String value) {

        if(StringUtils.isBlank(value)) {
            return null;
        } else {
            return value;
        }
    }

    public String getAsString(FacesContext context, UIComponent cmp, Object value) {

        if(value != null) {
            return value.toString().trim();
        } 
        return null;
    }

}