This is in response to Filipe Torres's post titled "How to include modules in section/category description".

The standard mosloadposition plugin that comes bundled with the original Joomla 1.5.x installation only allows you to include modules in content items.

This article shows you how to include modules in Section/Category description. You can see a live example here.

Solutions

1. Download and install. First you need to download and install the plugin loadmodule for Section/Category Description.

2. Publish the plugin. Go to Extensions menu, select Plugin Manager and make sure the plugin is enabled.
3. Add Trigger for Category Description. In the original Joomla installation, there is no trigger during the display of Category description. When there is no trigger, none of the mambot or plugin gets called. In order for Joomla to call the new plugin that we have just installed to include a module, we need to add a trigger.
1. Go to the folder <Joomla root folder>/components/com_content/views/category, you will see a file called view.html.php.
2. Open this file view.html.php in your favorite editor.
3. Go to around Line 39. In the function display(), add the four lines highlighted in yellow near the beginning of the function as follows:

class ContentViewCategory extends ContentView
{
    function display($tpl = null)
    {
        global $mainframe, $option;

        // Initialize some variables
        $user		=& JFactory::getUser();
        $uri 		=& JFactory::getURI();
        $document	=& JFactory::getDocument();
        $pathway	=& $mainframe->getPathway();

        $category	=& $this->get('Category');
        $dispatcher	=& JDispatcher::getInstance();
        JPluginHelper::importPlugin('content');
        $results = $dispatcher->trigger('onBeforeDisplayTitle', array (& $category));

        // Get the menu item object
        $menus = &JSite::getMenu();
        $menu  = $menus->getActive();

4. Save and close this file.

4. Add Trigger for Section Description. If you also want to include modules for Section Description, you also need to add a trigger as explained above.
1. Go to the folder <Joomla root folder>/components/com_content/views/section, you will see a file called view.html.php.
2. Open this file view.html.php in your favorite editor.
3. Go to around Line 36. In the function display(), add the four lines highlighted in yellow near the beginning of the function as follows:

class ContentViewSection extends ContentView
{
    function display($tpl = null)
    {
        global $mainframe, $option;

        // Initialize some variables
        $user		=& JFactory::getUser();
        $document	=& JFactory::getDocument();

        $section	=& $this->get('Section');
        $dispatcher	=& JDispatcher::getInstance();
        JPluginHelper::importPlugin('content');
        $results = $dispatcher->trigger('onBeforeDisplayTitle', array (& $section));

        // Get the page/component configuration
        $params = &$mainframe->getParams();

        // Request variables
        $limit = JRequest::getVar('limit', $params->get('display_num'), '', 'int');
        $limitstart = JRequest::getVar('limitstart', 0, '', 'int');

4. Then go to around Line 87, also in the function display(), add the four lines highlighted in yellow as follows. (Note: this one takes care of the case in which you have modules embedded in each of the category description):

class ContentViewSection extends ContentView
{
    function display($tpl = null)
    {
            .
            .
            .

        //add alternate feed link
        if($params->get('show_feed_link', 1) == 1)
        {
            $link	= '&format=feed&limitstart=';
            $attribs = array('type' => 'application/rss+xml', 'title' => 'RSS 2.0');
            $document->addHeadLink(JRoute::_($link.'&type=rss'), 
                'alternate', 'rel', $attribs);
            $attribs = array('type' => 'application/atom+xml', 'title' => 'Atom 1.0');
            $document->addHeadLink(JRoute::_($link.'&type=atom'), 
                'alternate', 'rel', $attribs);
        }

        $dispatcher	=& JDispatcher::getInstance();
        JPluginHelper::importPlugin('content');

        for($i = 0; $i < count($categories); $i++)
        {
            $category =& $categories[$i];
            $category->link = JRoute::_('index.php?view=category&id='.
                $category->slug);

            $results=$dispatcher->trigger('onBeforeDisplayTitle', array(&$category));
        }

        if ($total == 0) {
            $params->set('show_categories', false);
        }

5. Save and close this file.

5. That's it! You can now include a module inside a Section/Category description using the same method as outlined in How to include modules in Content item (for Joomla 1.5.x).