CODEWITHSUNDEEP
jsfjsf-2primefaces
99maas
99maas

Reputation: 1267

Primefaces - How to show different messages in different messages component in the same form

I need your assistant in showing the error messages in the proper messages component. In the form, I am using the messages component tag twice. The first messages component tag which is called messages, I am showing any error to the user that is validated from the main form.

Where I am also having a dialog in the same form that will validate if a variable is blank or empty, if it is blank,the error message should be shown in the messagesPDFST which is in the dialog not in the main form. Currently any error it is shown in the first messages component which is messages even if the error is in the dialog. Here is the code:

<h:form id="Requests">

    <p:messages id="messages" showDetail="true" autoUpdate="true" closable="true"/>

     <p:dialog id="Certificate1" header="Certificate" widgetVar="Certificate1" modal="true">

          <div align="right">
              <p:messages id="messagesPDFST" showDetail="true" autoUpdate="true" closable="true" />

               <p:commandButton value="Download" ajax="false" actionListener="#{hrd.PDFSTAR}" >

                    <p:fileDownload value="#{hrd.fileSTAR}" />
                </p:commandButton>

         </div>

</p:dialog>

</h:form>

and the Bean Code:

public void PDFSTAR() {
     if (refNo== null || refNo.equals("")) {

    FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_ERROR, "Error!", "Please enter the Reference No."));

            }

}

Upvotes: 3

Views: 6336

Answers (1)

kolossus
kolossus

Reputation: 20691

To display a FacesMessage for a specific component, you first need to

  1. Queue the message, for the specific component:

    FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_ERROR, "Error!", "Please enter the Reference No."));

    The first argument where you have null, is where you should have the client-side id of the component you're looking to target

  2. Specify the for attribute on the message component, limiting display of messages to that component only.

Putting it all together, you should now have

 FacesContext.getCurrentInstance().addMessage("Requests:Certificate1:downloadButton", new FacesMessage(FacesMessage.SEVERITY_ERROR, "Error!", "Please enter the Reference No."));

Where "downloadButton" is the id of the <p:commandButton/>

<p:messages for="downloadButton" id="messages" showDetail="true" autoUpdate="true" closable="true"/>

<p:commandButton id="downloadButton" value="Download" ajax="false" actionListener="#{hrd.PDFSTAR}" >
      <p:fileDownload value="#{hrd.fileSTAR}" />
</p:commandButton>

Unrelated to the actual problem

There's no need to be using <p:messages/> in the dialog, if the message is to be displayed for a single component only - <p:message/> will work just as well

Upvotes: 3

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