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jsfdatejsf-2validation
Valter Silva
Valter Silva

Reputation: 16656

JSF : How create custom validator to birthdate?

I would like to create the selected birthdate with a custom validator. This is my view:

        <h:selectOneMenu id="birthdate_day" value="#{userc.userb.b_day}">
            <f:validator validatorId="dateExistValidator" />
            <f:attribute name="day" value="#{dateExist.submittedValue}" />
            <f:ajax event="blur" render="m_birthdate_day" />

            <f:selectItem itemLabel="Dia" itemValue="" />
            <f:selectItems value="#{userc.birthDateDays}" />
        </h:selectOneMenu>
        <h:selectOneMenu id="birthdate_month" value="#{userc.userb.b_month}" binding="#{dateExist}" >
            <f:selectItem itemLabel="Mês" itemValue="" />
            <f:selectItems value="#{userc.birthDateMonths}" var="month" itemValue="#{month.key}" itemLabel="#{month.value}" />
            <f:ajax event="blur" execute="birthdate_day birthdate_month" render="m_birthdate_month" />
        </h:selectOneMenu>
        <h:selectOneMenu id="birthdate_year" value="#{userc.userb.b_year}">
            <f:selectItem itemLabel="Ano" itemValue="" />
            <f:selectItems value="#{userc.birthDateYears}" />
            <f:ajax event="blur" render="m_birthdate_year" />
        </h:selectOneMenu>

This is my validator:

@FacesValidator("dateExistValidator")
public class DateValidator implements Validator {

    @Override
    public void validate(FacesContext context, UIComponent component, Object value) throws ValidatorException {
        Integer day =   (Integer) value;
        Integer month = (Integer) component.getAttributes().get("month");
        Integer year =  (Integer) component.getAttributes().get("year");

        if (day == null || month == null || year == null) {
            return; // Just ignore and let required="true" do its job.
        }

        // do the verifications if the selected date exist
    }
}

But for some reason, my month and year object in my validator is always null. To be honest I don't know how to link the selected value in the selectItems to my validator.

How can I do that ? Or should I do this validation only when the user submit the form ?

Upvotes: 0

Views: 1313

Answers (1)

Daniel
Daniel

Reputation: 37061

Is you posted code incomplete?

Any way this should work

    <h:selectOneMenu id="birthdate_day" value="#{userc.userb.b_day}">
        <f:validator validatorId="dateExistValidator" />

        <f:attribute name="month" value="#{myMonth}" />
        <f:attribute name="year" value="#{myYear}" />
        <f:ajax event="blur" render="m_birthdate_day" />

        <f:selectItem itemLabel="Dia" itemValue="" />
        <f:selectItems value="#{userc.birthDateDays}" />
    </h:selectOneMenu>
    <h:selectOneMenu id="birthdate_month" value="#{userc.userb.b_month}" binding="#{myMonth}" >
        <f:selectItem itemLabel="M?s" itemValue="" />
        <f:selectItems value="#{userc.birthDateMonths}" var="month" itemValue="#{month.key}" itemLabel="#{month.value}" />
        <f:ajax event="blur" execute="birthdate_day birthdate_month" render="m_birthdate_month" />
    </h:selectOneMenu>
    <h:selectOneMenu id="birthdate_year" value="#{userc.userb.b_year}" binding="#{myYear}">
        <f:selectItem itemLabel="Ano" itemValue="" />
        <f:selectItems value="#{userc.birthDateYears}" />
        <f:ajax event="blur" render="m_birthdate_year" />
    </h:selectOneMenu>

Also , to get the value from the attributes you should convert them to their UIElement first and than extract their value , for example

UISelectOne month = (UISelectOne) component.getAttributes().get("myMonth");
month.getSubmittedValue()

Upvotes: 1

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