how to get the value passed in value attribute of <input> html Tag in controller

Question

I am using an input tag in my visualforce page with type="Radio" and value="{!Selected}".

In the controller, I have declared the boolean "Selected" with get;set;. But when i select the radio button, the variable "selected" does not get updaated to true in controller.

I could not use selectoptions due to my requirement.

Should a different approach be followed to achieve the same

Answer 1

You have multiply ways to achieve it:

• Use apex:selectRadio tag instead of html-input. You will then get the value of the variable into controller automatically. The Visualforce will do this job for you.
• You can still use html-input but then you should implement a structure that will take this value to controller. For example apex:actionFunctiontogether with apex:param.

Example:

<apex:selectList id="chooseColor" value="{!Selected}" size="1">
    <apex:selectOption itemValue="1" itemLabel="Option 1"/>
    <apex:selectOption itemValue="2" itemLabel="Option 2"/>
</apex:selectList>

Answer 2

As mast0r mentioned, you can use apex:ActionFunction and Javascript to achieve this.

This example should help: http://www.salesforceworld.blogspot.com/2011/06/parameter-passing-using.html#!http://salesforceworld.blogspot.com/2011/06/parameter-passing-using.html

You create an ActionFunction wrapped around your radio button (let's call it <apex:actionFunction name="someActionFunctionName"). Create a Javascript function that takes in one parameter (let's say for example, myRadioElement) and calls the name parameter of the actionFunction, then passes in the value of your HTML element as the parameter, e.g. someActionFunctionName(document.getElementByID(myRadioElement)). You can then call the Javascript function on whatever event you want on the element, and the value can be received and accessed in your controller like:

boolean interviewdate=Apexpages.currentPage().getParameters().get('myRadioElement');

Answer 3

  <apex:selectRadio value="{!selected}">
         <apex:selectOption itemValue="true" itemLabel="First"/>
         <apex:selectOption itemValue="false" itemLabel="Second"/>
         <apex:selectOption itemValue="true" itemLabel="Third"/>
        **<apex:actionSupport event="onchange" action="{!testSelected}"  rerender="out" />**
     </apex:selectRadio>


    <apex:outputPanel id="out"> 
         <p>You have selected:</p> 
         <apex:outputText value="{!selected}"/> 
   </apex:outputPanel>