Hi,

I am facing the problem in below scenario:

I have created 1 visualforce page, which used extension controller.

I want to input some values in the page and on clicking button, new window should be opened as a popup which in which i will put some more data and will ckick on save button in popup window page.

Both the pages will use same extension controller.

But the problem is, if i enter the data on new window page, and click save, that inputfield is giving me null value.

Please find below my simple code:

Page 1:

AccountPage:

<apex:page standardController="Account" extensions="AccountExtController">
    <apex:form >
        <apex:pageblock title="Date Section">
            <apex:pageBlockButtons >                                
                <apex:commandLink action="{!doAction}" value="SaveLink" id="theLink" target="_new">   
                    <apex:param name="accId" value="{!account.Id}"/>
                </apex:commandLink>               
            </apex:pageBlockButtons>
            <apex:inputField value="{!account.OppCloseDate__c}"/>
            </apex:pageblock>
    </apex:form>
</apex:page>

Second page: NewWindowPage

<apex:page standardController="Account" extensions="AccountExtController" sidebar="false" showHeader="false">
<script>
function closeWindow(){
    alert('closing window...');
    //window.close();       
}
</script>

<apex:form >
    <apex:pageBlock title="My Content">
            <apex:pageBlockButtons >
                <apex:commandButton action="{!updateAccountAndCreateOpp}" value="Save Records" onclick="return closeWindow();" immediate="true"/>
            </apex:pageBlockButtons>
            <apex:pageBlockSection title="Select NBK ID" columns="2">
                <apex:inputField value="{!account.NBKID__c}"/>
            </apex:pageBlockSection>
        </apex:pageBlock>
</apex:form>
</apex:page>

Extension controller:

public class AccountExtController {
    Account acc{get; set;}
    String accCloseDate='';
    public AccountExtController(ApexPages.StandardController controller) {
        System.debug('inside constructor...');
        acc = (Account)controller.getRecord();
    }
   
    public Pagereference doAction(){
        System.debug('inside doAction...');
        String aid = Apexpages.CurrentPage().getParameters().get('accId');
        System.debug('aid: '+aid);

        System.debug('account opp close date: '+acc.OppCloseDate__c);
        accCloseDate = ''+acc.OppCloseDate__c;
        

        Pagereference ref = Page.NewWindowPage;  
        ref.getParameters().put('id',acc.Id);
        ref.setRedirect(false);
        return ref;   
    }

    public Pagereference updateAccountAndCreateOpp(){
        Id secondpageId = ApexPages.currentPage().getParameters().get('id');
        System.debug('#### accCloseDate: '+accCloseDate);    

        System.debug('#### acc: '+acc);
        System.debug('#### acc.NBKID__c: '+acc.NBKID__c);
        return null;
    }
}

The above method "updateAccountAndCreateOpp" is called from second VF page in which i have set debug statements.I n this method, i am able to retain first page data as i have set redirect to false, for second page.

But i am not able to get the data in inputfield on second page.Its coming null.

Please suggest how to associate data on second page?

Thanks in advance.