Redirecting a page on Force.comsites

Question

I have created a VF page which is form to save account information. This page is visible to public and user with no logins can access it. I use this internally in my organization but I have plans to build login page to let only authorized person access it,but for now I have just this:

I use the Account standard controller in my VF page:

<apex:page standardController="Account" sidebar="false" showHeader="false">
    <apex:form >

    <apex:pageBlock title="Edit Account">
<apex:pageMessages/>
<apex:pageBlockSection columns="1">
    <apex:inputField value="{! Account.Name }"/>
    <apex:inputField value="{! Account.Phone }"/>        
    <apex:inputField value="{! Account.Industry }"/>        
    <apex:inputField value="{! Account.AnnualRevenue }"/>
</apex:pageBlockSection>

        <apex:pageBlockButtons >
            <apex:commandButton action="{! save }" value="Save" />        
        </apex:pageBlockButtons>

    </apex:pageBlock>


    </apex:form>
</apex:page>

When a user enters the details and click save. I get an authorization error Required page. When I use the page in Salesforce I am redirected to Account page once I click save. I assume that public users would not have access to this account page. How can I redirect this page to some other visual force page which says "Saved Successfully". Basically how to redirect a VF page to another VF page.

Answer:

I figured it out myself by reading the Salesforce's awesome documentation. I had to write a controller class(extensions) like below to redirect my page:

public class RedirectionClass{
    private final Account acct;

    // The extension constructor initializes the private member
    // variable acct by using the getRecord method from the standard
    // controller.
    public RedirectionClass(ApexPages.StandardController stdController) {
        this.acct = (Account)stdController.getRecord();
    }

    public PageReference save() {
        insert acct;
        PageReference acctPage= new PageReference('http://hometest1-developer-edition.na34.force.com/test/helloworld');
        acctPage.setRedirect(true);
        return acctPage;
    }
}

Answer 1

The redirect is easy enough; you need to get in between the standard save method like this:

public with sharing class AccountSaveExtension {

    ApexPages.StandardController controller;

    public AccountSaveExtension(ApexPages.StandardController controller) {
        this.controller = controller;
    }

    public PageReference doSaveAndRedirect() {
        this.controller.save();
        PageReference redirect = new PageReference('/success');
        return redirect;
    }

}

---

<apex:pageBlockButtons>
    <apex:commandButton action="{!doSaveAndRedirect}" value="Save" />        
</apex:pageBlockButtons>

But first, you have the bigger hairiness of the save not succeeding. You can try going to Setup > Sites, click Preview As Admin and then fill out your form again. Now the error should be displayed to you.