Display Date/Time Based On Lookup User.





VF Page:

<apex:page standardcontroller="Contact" extensions="RelatedController" showHeader="false">
 <apex:form >
  <apex:actionRegion >
   <apex:pageBlock id="accinfo">      
    <apex:pageBlockSection title="Account Information">
  
     <apex:inputField value="{!contact.AccountId}" id="abc">
      <apex:actionSupport event="onchange" action="{!currentDatePopup}" rerender="accinfo,abc" /> 
     </apex:inputField>
 <apex:outputText value="{!currentDatetime }" label="Current Date/time" />

   <apex:inputField value="{!contact.Look__c}" id="abc1">
    <apex:actionSupport event="onchange" action="{!currentDatePopup1}" rerender="accinfo,abc1" /> 
  </apex:inputField>       
 <apex:outputText value="{!currentDatetime1 }" label="Current "/> 

   </apex:pageBlockSection>        
  </apex:pageBlock>
  </apex:actionRegion>      
 </apex:form>
</apex:page>


Apex Class:

public with sharing class RelatedController
{
 private ApexPages.StandardController stdCtrl;
 public Contact con;
  public datetime currentDatetime{get;set;}
  public datetime currentDatetime1{get;set;}

  public void currentDatePopup()
{
        currentDatetime = System.now();            
}
  public void currentDatePopup1()
{
        currentDatetime1 = System.now();            
}
 public RelatedController(ApexPages.StandardController std)
 {
  stdCtrl=std;
 }

 public void AccountPopulated()
 {
Contact cont=(Contact) stdCtrl.getRecord();
   try{
   if(cont.account!= null)
 
  cont.Account=[select AccountNumber,CurrentDate__c,Lookuptest__c,DateTime__c from Account where id=:cont.AccountId ];
 }
 catch(exception e){}
 }
}