How to get Apex:inputfield value in controller

Question

I am trying to store value in an object using:
<apex:inputField type="number" value="{!VS.Vegetable_Amount__c}" id="v0" />

in the controller I am doing this:

public Expense_Object__c VS {get;set;}
public PageReference saveAndReturn()
{
        system.debug('Value is:'+VS.Total_Amount__c);
}

I am trying to fetch value here but neither data is getting inserted nor I am getting any value?

Answer 1

Not much code to go on, but a quick guess: you need to create an instance of Expense_Object__c and assign it to VS in the controller's constructor. Currently, it looks like VS is null.

public with sharing class YourClassName {

    public Expense_Object__c VS {get;set;}

    public YourClassName() {
        // create an expense object instance to use
        VS = new Expense_Object__c();
    }

    public PageReference saveAndReturn()
    {
        system.debug('Value is:'+VS.Total_Amount__c);
    }
}

Answer 2

There are two things you need to check/correct

• You have to create an instance of Expense_Object__c object and assign it to VS variable.
• You are using Vegetable_Amount__c in the input field and you are checking the value of Total_Amount__c in debug log.

Note: There is no insert statement in your controller.

Answer 3

public Expense_Object__c VS1 {get;set;}//This I was using already
public SaveAndReturnController(ApexPages.StandardController controller)//This 
is new
{
 VS = new Expense_Object__c();
 this.controller = controller;        
}
public PageReference saveAndReturn()
{ 
system.debug('X is:'+VS.Vegetable_Amount__c);
PageReference cancel = new 
PageReference(ApexPages.currentPage().getHeaders().get('Referer'));
insert VS;//introduced this insert
//controller.save(); I was using this previously so commented
return cancel;      
}