Unable to fetch Record from Standard Controller

Question

Here is snippet of constructor : I have VF page where there is lookup field, onchange of that lookup field I have to render some other fields from another Object using SOQL ---- I have called the method for that and Plz NOTICE I am not getting the StandardController record fields values in that method also

 public PTORequestController(ApexPages.StandardController controller) {
        objRequest=(PTO_Request__c)controller.getRecord();        
        System.debug('---------- objRequestConstructor -------------'+ objRequest);
    }

Answer 1

For your problem I am assuming that PTO_Request__c has xyz field as lookup field. Then in your VF page you will be writing code as :

<apex:inputField value="{!objRequest.xyz__c}"/>

The above code will make it as lookup field on page. And now you have to add onchange event, so for this either you have to use javascript function or you can use as:

<apex:inputField value="{!objRequest.xyz__c}" onchange="change();"/>
<apex:actionFunction name="change" action="{!methodName}" rerender="none"/>

or

<apex:inputField value="{!objRequest.xyz__c}">
   <apex:actionSupport event="onchange" action="{!methodName}" rerender="none"/>
</apex:actionFunction>

And in controller you can write the method as :

public PageReference methodName(){
    // Here you will get "objRequest.xyz__c" and perform the logic here
}

Hope this will help you.

Answer 2

I think your code is fine. Make sure you are passing ID of valid PTO_Request__c object

Answer 3

have you added the id in the URL of the VF Page like "?id=Id of the PTO_Request__c record" ?

Eg. na1.salesforce.com/apex/yourvfpage?id=00XXXXX

where 00XXXXX is the Id of PTO_Request__c record.