Change made last month in a subform field broke subform support when there is a joomla.form.field.radio.switcher (and most likely joomla.form.field.radio.buttons) layout set on the field. The result is Uncaught TypeError like this

In short, the script is looking for a radio class in element parents. Where the script itself works fine, the switcher and buttons layout for the radio field lacks the radio class on a fieldset.

Summary of Changes

Added radio class to joomla.form.field.radio.switcher and joomla.form.field.radio.buttons layouts.

Testing Instructions

Add this field XML to any of the core modules like (eg mod_banners) and try to add new row in this field:

<field name="fields" type="subform"
       multiple="true"
       label="Fields"
>
    <form>
        <field name="checkboxes" 
               type="checkboxes" 
               label="Checkboxes"
        >
            <option value="0">JNO</option>
            <option value="1">JYES</option>
        </field>
        <field name="radio" 
               type="radio"
               label="Radio"
               layout="joomla.form.field.radio.switcher"
        >
            <option value="0">JNO</option>
            <option value="1">JYES</option>
        </field>
    </form>
</field>

Actual result BEFORE applying this Pull Request

Uncaught TypeError: can't access property "nodeName", b is null

Expected result AFTER applying this Pull Request

New row in a subform is added

Link to documentations

Please select:

• Documentation link for docs.joomla.org:

• No documentation changes for docs.joomla.org needed

• Pull Request link for manual.joomla.org:

• No documentation changes for manual.joomla.org needed