The default RadioButton element has three buttons labeled Radio 1, Radio 2, and Radio 3. In the Properties box is a text area where you can edit these labels, and also add more buttons if you need them, each on a new line.

While you are in the Properties box change the Label element as well.

To do that we need to know what the name of our radio box input is. Unlike the text inputs, ChronoForms didn't show us this when we created it (it might in a future version).

There are several ways to do this, and we're going to turn on ChronoForm's useful Debug Report to find the answer.

Go back to the ChronoForms Form Manager view and open the form in the Form Editor by clicking on the title of the form you want to edit.

On the General tab there is a group of Other Form Settings and Debug is about a third on the way down. Change the drop-down to ON and Apply or Save the form.

You should see a screen full of rather odd looking output:

Breaking this into chunks:

Message 5 in Section 3 is the $_POST Array. This shows you the values that are submitted from the form back to the server. These are the "raw materials" that we will work with, save, and process in more complex forms. Here's what we see, with some added line-breaks for clarity:

$_POST Array: Array ( [text_2] => Testing [text_0] => test@example.com [radio0] => accounts [button_1] => Submit
[39070f8a69c53b3579887a872c0c01d9] => 1 [1cf1] => d8b3cb29d8773a9c33002ba4bcb63a35 [chronoformname] => newsletter_signup )

The first two entries in the array are the name and e-mail fields that we've been working with (notice that the name field here is text_2 rather than text_1). The third entry is the one that we want here [radio0] => accounts tells us that the "key" or "name" for our radio button is radio0.

That's all we need from here.

There are three blocks here again:

For now click the [+/-] link after On Submit Code - before sending email (we'll call this OnSubmit Before from now on), and a text box will open like this:

PHP code is marked out by PHP tags <? php and ?>; anything between these is PHP and will be "processed" by the server. Anything outside these tags, and any output from the PHP will be treated as HTML and is usually sent to the browser as part of a web page.

So we'll start out by putting a pair of PHP tags in the box:

<?php
?>

We need to get the value of radio0 from the $_POST array. Joomla! provides us with a way to do this which also offers some protection from malicious users entering potentially dangerous code into our forms. Wherever we can, we'll use this Joomla! code to get our form results.

<?php
$radio0 = JRequest::getString('radio0', '', 'post');
?>

There's a possibility that the user didn't select anything so radio0 will be empty, or not be there at all. We still want to send an e-mail if this happens so we'll set a default value, and it can go to the administrator for them to sort out.

<?php
$radio0 = JRequest::getString('radio0', 'admin', 'post');
?>

We also need to set an e-mail for each department and we'll do this with an array where the "key" is the department name from the form, and the "value" is the e-mail address:

<?php
$radio0 = JRequest::getString('radio0', 'admin', 'post');
$emails = array (
'accounts' => 'accounts@example.com',
'technical' => 'technical@example.com',
'sales' => 'sales@example.com',
'admin' => 'admin@example.com'
);
?>

Now we know that $radio0 must match one of the four keys so we just have to find out which. We select an array value by setting the "index" to $radio0.

<?php
$radio0 = JRequest::getString('radio0', 'admin', 'post');
$emails = array (
'accounts' => 'accounts@example.com',
'technical' => 'technical@example.com',
'sales' => 'sales@example.com',
'admin' => 'admin@example.com'
);
$email_to_use = $emails[$radio0];
?>

Lastly, we have to pass this e-mail to ChronoForms to use. We're going to do this in two steps. First, by creating a new entry in the $_POST array using the Joomla! code JRequest::setVar(), which is like JRequest::getString() in reverse.

<?php
$radio0 = JRequest::getString('radio0', 'admin', 'post');
$emails = array (
'accounts' => 'accounts@example.com',
'technical' => 'technical@example.com',
'sales' => 'sales@example.com',
'admin' => 'admin@example.com'
);
$email_to_use = $emails[$radio0];
JRequest::setVar('email_to_use', $email_to_use);
?>

The two parameters in the function are the key and the value of the new pair.

Apply the form to save our code entries in this box.

We now need to switch that To field from static — that always goes to the same address — and replace it with a Dynamic To linked to the 'email_to_use' input.

Click the red cross in the corner of the To element to delete it. Notice that the Email Setup turns red because we've removed a required element.

Drag in a new Dynamic To element; it will go to the bottom but that is fine, as the order isn't important. Then, the Email Setup will turn green again.

Now add the input name email_to_use into the Dynamic To box. Enter the string without any quotes or brackets.

Check that the e-mail is "enabled" in the Email Properties box (ChronoForms may have disabled it when it turned red), set to Yes, and Apply if you need to. Then save the form in the editor, go to the form in the Front End and submit it to test.

And there's the e-mail address for the technical department in the To field.