I'm making a module where the user can select some manufacturers names from the backend and the names will be posted in the index with some nice css.

I want to ask if I can add some jquery in the backend page, to make it easier for user. I want to make a text box where will count how many manufacturers the user selected ( max 30 ) and a list with every manufacturer currently selected. I will post an image to make it even more clear:

enter image description here

1 Answer 1


You will need to create a custom form field for this.

So firstly, change the type of the field in your XML like so:

<field name="brands" type="brands" label="Foreign Brands" />

Then in your XML, replace your <fieldset> with:

<fieldset addfieldpath="/modules/mod_mymodule/fields">

Then, create a new PHP file called brands.php in:


defined('JPATH_BASE') or die;


class JFormFieldBrands extends JFormField
    protected $type = 'brands';

    public function getInput()
       $doc = JDocument::getDocument();
       $js = '
                  // Your JS code

       $options = array(
           'A.Dominguez' => 'A.Dominguez',
           'A.Feretti'   => 'A.Feretti',
           // Add more here

       $select = JHtml::_('select.genericlist', $options, $this->name, null, 'value', 'text', $this->value, $this->id);

       return $select;
  • in the above custom form field you entered the code to post the dropdown list also ?? or it is only for the 2 jquery elements ?? also really nice answer gonna test it in 5 mins!
    – IseNgaRt
    Dec 3, 2014 at 8:34
  • Yes, this code will also render the dropdown list. You simply need to add all your values to the $options array. I have added a comment // Add more here where you need to do this and also a comment where you can add your jQuery code ;)
    – Lodder
    Dec 3, 2014 at 8:36
  • I allready created the custom form field code for the dropdown list, so the jquery code HAVE to be in the same file right ? or i can create a new one with only jquery code? could it work then ?
    – IseNgaRt
    Dec 3, 2014 at 8:39
  • Yes you can do that too. Make sure you import the js file properly using Joomla coding standards. I on my way to work now but can show you when I get there
    – Lodder
    Dec 3, 2014 at 8:42
  • 1
    JHtml::_('script', JUri::root() . 'modules/mod_mymodule/path/file.js');
    – Lodder
    Dec 3, 2014 at 9:47

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