How to implement "Save & New" functionality in a VisualForce Page - salesforce

Question

I know that this is how to save a record
<apex:commandButton action="{!save}" value="Save"/>
Now I want a button to save the current record and reset the form to input another record.
Something like this...
<apex:commandButton action="{!SaveAndNew}" value="Save & New"/>

Answer 1

The URL for the new record page is the {org URL}/{3 letter object prefix}/e?".
You could define your save method as follows, where m_sc is a reference to the standardController passed to your extension in it's constructor:
public Pagereference doSaveAndNew()
{
SObject so = m_sc.getRecord();
upsert so;
string s = '/' + ('' + so.get('Id')).subString(0, 3) + '/e?';
ApexPages.addMessage(new ApexPages.message(ApexPages.Severity.Info, s));
return new Pagereference(s);
}
To use your controller as an extension, modify it's constructor to take a StandardController reference as an argument:
public class TimeSheetExtension
{
ApexPages.standardController m_sc = null;
public TimeSheetExtension(ApexPages.standardController sc)
{
m_sc = sc;
}
//etc.
Then just modify your <apex:page> tag in your page to reference it as an extension:
<apex:page standardController="Timesheet__c" extensions="TimeSheetExtension">
<apex:form >
<apex:pageMessages />
{!Timesheet__c.Name}
<apex:commandButton action="{!doCancel}" value="Cancel"/>
<apex:commandButton action="{!doSaveAndNew}" value="Save & New"/>
</apex:form>
</apex:page>
Note that you don't need Extension in the class name, I just did that to be sensible. You shouldn't need to modify anything else on your page to utilise this approach.

Answer 2

Ideally, you could use the ApexPages.Action class for this. But when I've tried to use it, it's been too buggy. It's been a while, so you might want to play with it using the {!URLFOR($Action.Account.New)} action.
What will work is simply using a PageReference to redirect the user to the "new" URL.
For example, if this were for Accounts,
public PageReference SaveAndNew() {
// code to do saving goes here
PageReference pageRef = new PageReference('/001/e');
return pageRef;
}