I'm building a Visualforce page that let's the user upload some images, they can add as many images as they want, when they click on the "add new" button, a new record is inserted and one of the record fields is the path where it'll be uploaded to.

Here's the button and the action related:

<apex:form >
        <apex:actionFunction action="{!createFile}" name="createRecord" reRender="none"/> 

<input class="btn" type="button" id="add-btn" value="{!$Label.Add_New}" onclick="createRecord()" />

and the createRecord method:

public String fileName {get;set;}

public void createFile(){
    String folder = ApexPages.currentPage().getParameters().get('orgId');
    try {
        Custom_Object__c file = new Custom_Object__c();
    //Some fields get assigned
        insert file;

        Transient Custom_Object__c tmpFile = [SELECT Path__c FROM Custom_Object__c WHERE Id = :file.Id limit 1];
        fileName = folder + tmpFile.Path__c + ‘.jpg’;
    } catch (DMLException e){
        System.debug('DML EXCEPTION: ' + e);
    } catch (QueryException e) {
        System.debug('Query EXCEPTION: ' + e);

Then I'm getting the fileNamevalue in order to upload the file.

    method="post" enctype="multipart/form-data" >
    <input type="hidden" name="key"  value="{!fileName}" /> 

    <input type="file" size="255" name="file" />
    <input class="btn" type="submit" value="{!$Label.Upload}"/>

The problem is that when I called the createRecordfunction with the reRender="none" to prevent it from refresh the entire page, the {!fileName} call doesn't get the just updated value. When I remove the reRender="none" it gets the new value just fine, I need it to get the new value without refreshing the entire page, how can I do this?


I think you are confused about what rerender does. It let's you specify what you want to rerender.

Give your form an Id and then do your rerender="formId". This will rerender that section of the page and so update the value.

<form action="https://someurl.com/" method="post" enctype="multipart/form-data" id="formId">


<apex:actionFunction action="{!createFile}" name="createRecord" reRender="formId" />
  • Just tried it and didn't work.
    – Jose
    May 30 '14 at 15:59
  • your answer didn't work, but gave me an idea, I placed the <form> tag inside an <apex:outputPanel>and called it in the <apex:actionFunction action="{!createFile}" name="createRecord" reRender="upload-panel" /> and it worked perfect. Thanks a lot.
    – Jose
    May 30 '14 at 16:21
  • Glad i could help!
    – dphil
    May 30 '14 at 17:05

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.