7
<apex:page controller="testRadio">
    <apex:form >
         <apex:selectRadio > 
            <apex:pageBlock >
                <apex:pageBlockTable value="{!selectOptions}" var="s">
                    <apex:column >
                        {!s.value} <apex:selectOption value="{!s}" /> 
                    </apex:column>
                </apex:pageBlockTable>
            </apex:pageBlock>
        </apex:selectRadio> 
    </apex:form>
</apex:page>

I want to display multiple rows with a radiobox in each row. End users may only select one of the rows, hence the radio box.

I cannot seem to do this without receiving the visualforce error:

"Select components should have at least one child component of type selectOption or selectOptions"

Is there a workaround to this? I am familiar with wrapper objects for check boxes.

7

The error you're seeing is occurring because a selectRadio can only have options as children; they can't wrap a table. That approach won't work because the selectRadio component isn't set up to do that.

Lacey's answer certainly is one solution. When I've needed to do this, I've opted for using a backing wrapper class that has a "selected" Boolean attribute, and then I build the table with javascript-controlled mutually exclusive VF inputCheckboxes that bind to the "selected" attribute of each row. You could do something similar with vanilla HTML radio buttons, but I prefer the checkbox route because in my experience it's less error-prone since you don't have to do any copying logic etc.

Here's an example of the general idea (untested but should show you the general idea):

<apex:pageBlockTable value="{!sObjectWrappers}" var="s">
    <apex:column>
        <apex:inputCheckbox styleClass="mutex" value="{!s.selected}" />
    </apex:column>
    <apex:column >
        {!s.label}
    </apex:column>
</apex:pageBlockTable>

So, now you have a table with a bunch of checkboxes. Use a bit of jQuery magic against that "mutex" CSS class to make the checkboxes mutually exclusive:

$("input.mutex").click(function() {
    var myCb = this;
    $("input.mutex").each(function() {
        if (this != myCb) {
            this.checked = false;
        }
    });
});

And that's it. Now when your form is submitted to your VF controller, you can tell which element was selected by looking at the "selected" attribute of your wrapper class.

  • Awesome. In fact I actually have a wrapper/checkbox right now, but the client asked that it be mutually exclusive. This shouldn't be too hard to pull off .. I'll report after attempting it tomorrow. – Matthew Moisen Aug 20 '13 at 6:01
3

It's a bit nasty but I think your only real option here is to use HTML radio elements. You could use some javascript in the onClick event to copy the current value to an <apex:hidden> form element which is then bound do the desired variable in the controller.

I've split out checkboxes by using a map and dynamic binding in the past, but again, without some javascript you won't get the single selection functionality.

  • 1
    Or onClick, call an apex:actionFunction passing the selected ID as a parameter and assign it to an apex variable. – Boris Bachovski Aug 20 '13 at 5:06
2

I agree with jkraybill and LaceySnr, I think the only way to have/enforce a "selectRadio" is to jimmy rig something out of HTML elements + javascript (jQuery). I recently had the same situation, and I used a wrapper class + <apex:inputCheckbox>s + jQuery to enforce only checkbox can be checked out of my selection.

Here's my example in case it helps:

It's a VF page where a user chooses an option or declines any choice (in this case it's for Employees to choose a Health Benefit for the 2013-2014 enrollment period).

Wrapper class in my controller:

public class myController{

    public class benefitChoice{
        public boolean isSelected {get;set;}
        public Benefit_Type__c benefitType {get;set;}

        public benefitChoice(){} //empty constructor
        public benefitChoice(boolean selection,Benefit_Type__c bt){
            this.isSelected = selection;
            this.benefitType = bt;
        }// a fun constructor
        public benefitChoice(Benefit_Type__c bt,boolean selection){
            this.isSelected = selection;
            this.benefitType = bt;
        }// another fun constructor 
    }
    public list<benefitChoice> AvailableBenefits {get;set;}

    public boolean declineBenefit {get;set;}

    // create available benefits + whatever else you need

}//END class

VF Page sample: Note: I displayed the AvailableBenefits in <div>s rather than a table so jQuery's toggle.('slide') animates smoothly

<div class="ben-avail" >
    <div class="ben-avail-tr">
        <div class="ben-avail-td ben-avail-th ben-avail-td-1"></div>
        <div class="ben-avail-td ben-avail-th ben-avail-td-2">
            Benefit Description
        </div>
        <div class="ben-avail-td ben-avail-th ben-avail-td-3">
            Converage
        </div>
        <div class="ben-avail-td ben-avail-th ben-avail-td-4">
            PR Deduction
        </div>
        <div class="ben-avail-td ben-avail-th ben-avail-td-5">
            Has HSA
        </div>
        <div class="clear"></div>
    </div>    
    <apex:repeat value="{!AvailableBenefits}" var="b">
        <div class="ben-avail-tr">
            <div class="ben-avail-td ben-avail-td-1">
                <apex:inputCheckbox value="{!b.choice}" styleClass="benefitSelection accept"/>
            </div>
            <div class="ben-avail-td ben-avail-td-2">
                <apex:outputField value="{!b.benType.Name}" styleClass="ben-desc"/>
            </div>
            <div class="ben-avail-td ben-avail-td-3">
                <apex:outputField value="{!b.benType.Coverage__c}" styleClass="ben-coverage"/>
            </div>
            <div class="ben-avail-td ben-avail-td-4">
                <apex:outputField value="{!b.benType.EE_PR_Deduction__c}" styleClass="ben-deduction"/>
            </div>
            <div class="ben-avail-td ben-avail-td-5">
                <apex:outputField value="{!b.benType.Include_HSA__c}"/>
            </div>
            <div class="clear"></div>
        </div>    
    </apex:repeat>
</div>   
<br/>                        
<!-- Have a different div to display "Decline All Benefits" option [so it can have a red background-color :) ]-->
<div class="ben-choose-no">
    <span>
        <apex:inputCheckbox value="{!chooseNo}" styleClass="benefitSelection decline" />&nbsp;&nbsp;&nbsp;&nbsp;I decline 2013-2014 Health Benefits.           
    </span>
</div>

With jQuery:

<apex:includeScript value="{!URLFOR($Resource.jQuery,'jQuery/jquery-1.10.1.min.js')}"/>  <!-- I keep my jQuery scripts in a static resource -->
<apex:includeScript value="{!URLFOR($Resource.jQuery,'jQuery/jquery-ui.min.js')}"/>  <!-- jquery UI -->

<script>
    var j$=jQuery.noConflict();

    j$(document).ready(function(){

        j$('.benefitSelection').click(function(){
            //alert('You selected '+j$(this).val());
            var justSelected=j$(this);                //store the which element was selected
            j$('.benefitSelection').prop('checked',false);  //uncheck all elements
            justSelected.prop('checked',true);   //reselect the selected element
        });
    });
</script>                 

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