JSF, how to express a required attribute

Question

I want to check the calendar input while the Save button is clicked. It means if I clicked other buttons or do anything else, it would not check input. How to express it ?

Answer 1

1. Write a button onClick event handler function in javascript
2. In the onClick event handler function, you can access the HTML document (DOM) ant its elements (For convenience you can use jquery). You can get the attribute value using this.

Answer 2

you can use the required tag in your calendar and use the process tag in your Save commandButton like this:

<h:form>
    <p:inputText id="otherinput" value="Other inputs..."/>
    <p:calendar id="calendar" required="true"/>

    <p:commandButton process="calendar" value="Save"/>
    <p:commandButton process="otherinput" value="Other Button"/>

</h:form>

This way when you click the "Save" button it will only process the calendar and not the other elements. Also when you click the "Other Button" it will not check the calendar.

I assumed here that you are using Primefaces as your 3rd party JSF component provider since you didn't mention any, let alone post any sample code you've tried.

Hope this helps