I am building a VF page that uses a repeat to build a number of rows based on how many values are in a picklist. What I would like to do is when a checkbox is checked, rerender the Notes textArea for that row as required. I have tried suggestions found on Google and was not able to make it work

<apex:repeat value="{!rows}" var="field" >
    <apex:outputLabel value="{!field.Business}" />
    <apex:inputCheckbox value="{!field.selected}">
        <apex:actionSupport event="onChange" rerender="notesPanel"/>
    <apex:inputField value="{!field.OwnerId}" label="Send To" required="false"/>
    <apex:outputPanel id="notesPanel">
        <apex:inputTextArea value="{!field.Notes}" required="{!field.selected}"/>

I have tried: required="{!field.selected}, event="onChange", event="onchange", event="OnChange"


I just dealt with a similar issue. It may be one of several things. Most likely, it's an error with the data that cannot be surfaced because you aren't refreshing an <apex:pageMessages>. To solve this problem, I'd suggest doing the following:

  1. Add a pageMessages element that gets refreshed, as well (this would help diagnose your problem).
  2. Wrap your checkbox in an <apex:actionRegion>.
  3. Add action={!refresh} to the <apex:actionSupport> tag, and a method that looks like:
    public PageReference refresh() {
      PageReference ref = ApexPages.currentPage();
      return null;
  1. Possibly add immediate="true", also.
  • You know what? I was missing the <apex:pageMessages> I was expecting the red bar to appear showing the field is required and the errors to be on the field level rather than the page. Now I just need to figure out how to get the errors down to the field level instead. Thanks! – Mike Jul 22 '15 at 20:48
  • 1
    @Mike - Check out Part 1 and Part 2, maybe it will help you: bobbuzzard.blogspot.com/2011/04/… - Part 2: bobbuzzard.blogspot.com/2011/04/… – Eric Jul 22 '15 at 21:49

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