Conditional validation using primefaces in JSF

0
votes

I have two entities in JSF that are dropdowns. If i am selelcting month then i should compulsarily select year. If i have not selected Year and only selected month then a validation error should appear on click of submit button. Is such form of conditional validation possible in primefaces. I had tried javascript method but i failed somehow. How can it be acheived using primefaces.? Below are my two entities.

<p:outputLabel for="year" value="Year: " /> 
            <p:selectOneMenu id="year" style="width:150px   " value="#{bean.year}">
            <f:selectItem itemLabel="All" itemValue="All"/>
            <f:selectItem itemLabel="2014" itemValue="2014"/>
            <f:selectItem itemLabel="2013" itemValue="2013"/>
            <f:selectItem itemLabel="2012" itemValue="2012"/>
            <f:selectItem itemLabel="2011" itemValue="2011"/>
            <f:selectItem itemLabel="2010" itemValue="2010"/>
            <f:selectItem itemLabel="2009" itemValue="2009"/>
        </p:selectOneMenu>

            <p:outputLabel for="month" value="Month: " />                   
            <p:selectOneMenu id="month" style="width:150px" value="#{bean.month}">
            <f:selectItem itemLabel="All" itemValue="All"/>
            <f:selectItem itemLabel="January" itemValue="01"/>
            <f:selectItem itemLabel="February" itemValue="02"/>
            <f:selectItem itemLabel="March" itemValue="03"/>
            <f:selectItem itemLabel="April" itemValue="04"/>
            <f:selectItem itemLabel="May" itemValue="05"/>
            <f:selectItem itemLabel="June" itemValue="06"/>
                <f:selectItem itemLabel="July" itemValue="07"/>
            <f:selectItem itemLabel="August" itemValue="08"/>
            <f:selectItem itemLabel="September" itemValue="09"/>
            <f:selectItem itemLabel="October" itemValue="10"/>
            <f:selectItem itemLabel="November" itemValue="11"/>
            <f:selectItem itemLabel="December" itemValue="12"/>
        </p:selectOneMenu>
2
jsfjsf-2primefaces

2 Answers

1
votes

Add the attribute required="true" to your selectOneMenu of year

    <p:selectOneMenu id="year" style="width:150px" required="true" value="#{bean.year}">
           <!-- some code here -->
   </p:selectOneMenu>
   <p:message for="year" display="icon" />

note that the tag message is for showing where the error has happened .for the selectOneMenu of month do the same thing ..

1
votes

I think that this simple solution for your case, and if you want to use Custom validator, you have to follow steps:

  1. Create a validator class by implementing the javax.faces.validator.Validator interface.

  2. Override validate() method.

  3. Assign an unique validator ID via @FacesValidator annotation.

  4. Reference custom validator class to JSF component via f:validator tag.

You can go here for more information Custom validator in JSF 2.0