jsf - How to use target=“_blank” to open report in new window only if validation has not failed

Question

I have a report that needs to be opened in another tab, but only if the validation hasn't failed. In my case, the validation fails and the same page opens in another tab with the validations errors.

Answer 1

Luiggi has answered the POST matter. If the report is however available by a GET request, then there are other ways.

1. Use window.open() in oncomplete.

    <h:form>
        ...
        <p:commandButton action="#{bean.submit}" update="@form" 
            oncomplete="if (args &amp;&amp; !args.validationFailed) window.open('reportURL')" />
    </h:form>
   

2. Or conditionally render a <h:outputScript> with window.open().

    <h:form>
        ...
        <p:commandButton action="#{bean.submit}" update="@form" />
        <h:outputScript rendered="#{facesContext.postback and not facesContext.validationFailed}">
            window.open('reportURL');
        </h:outputScript>
    </h:form>
   

3. Or use PrimeFaces Primefaces#execute() with window.open().

    public void submit() { 
        // ...
        PrimeFaces.current().executeScript("window.open('reportURL');");
    }
   

The first way requires the URL to be already definied before submit, the latter two ways allows you to use a dynamic URL like so window.open('#{bean.reportURL}').