[SalesForce] How to pass selected value to controller

I have a VisualForce page that should pass the selected value to the controller action based on the selection but I'm getting the null

employee__c.dept_c is a picklist datatype

Here is my following Visualforce page:

<apex:inputField value="{!employee__c.dept_c}">                    
  <apex:actionSupport event="onchange" action="{!deptOnChange}" />                  
  <apex:param name="re" value="{!employee__c.dept_c}" assignTo="{!selectedDept}" />
</apex:inputField>

Controller:

public string selectedDept {get;set;}

public void deptOnChange()
{
   system.debug('deptOnChange: ' + selectedDept ); 
}

Best Answer

I able to figured out, hope this will help others:

Visualforce page:

<apex:page standardController="employeeCtrl">
 ......
 ......
<apex:inputField value="{!employee__c.dept_c}">                    
  <apex:actionSupport event="onchange" action="{!deptOnChange}" />   
</apex:inputField> 
</apex:page>

Controller:

 Employee__c emp; 

 public employeeCtrl(ApexPages.StandardController controller) 
 {        
     emp = (Employee__c)controller.getRecord(); 
 } 

 public void deptOnChange()
 {
   system.debug('deptOnChange: ' + emp.dept_c); 
 }
Related Topic