How to Get Component, Module, Plugin, and Menu parameters in Joomla 3.X

At the time of Joomla! custom component development, we need to get a component’s parameters for use in different places like in the component itself, modules, and plugins.

Access component parameters from inside own component

To access component parameters in the component itself, I use Factory::getApplication() like the below:

use Joomla\CMS\Factory;

$app = Factory::getApplication();
$params = $app->getParams();
$param = $params->get('show_create_date');

Access component parameters from another component

use Joomla\CMS\Component\ComponentHelper;

$content_params = ComponentHelper::getParams( 'com_content' );
$show_date = $content_params->get( 'show_create_date' );

Or even shortcut:

$show_date = ComponentHelper::getParams('com_content')->get('show_create_date');

Get the Module Parameter from the template’s index.php file

use Joomla\CMS\Component\ComponentHelper;
use Joomla\Registry\Registry;

$module = ModuleHelper::getModule('mod_headlineticker');
$headLineParams = new Registry($module->params);
$tickercount = (int) $headLineParams['count'];

Get the plugin’s parameter anywhere inside Joomla

To access a plugin’s parameter (here, it is “relatedarticles” which is a “content” plugin) anywhere inside Joomla 3, load the particular plugin’s parameters in a variable named “$plugin” using PluginHelper::getPlugin function as an array. Later, this array-type variable is boxed in JRegistry class and uses the “get” function to access each and every parameter of the Registry (former JRegistry) class.

use Joomla\CMS\Plugin\PluginHelper;
use Joomla\Registry\Registry;

// Get plugin 'relatedarticles' of type 'content'
$plugin = PluginHelper::getPlugin('content', 'relatedarticles');

// Check if plugin is enabled
if ($plugin) {
    // Get plugin params
    $pluginParams = new Registry($plugin->params);
    $catids = $pluginParams->get('catids');
}

To access Current Menu parameters

use Joomla\CMS\Factory;

$app = Factory::getApplication();
// Get active menu
$currentMenuItem = $app->getMenu()->getActive();
// Get params for active menu
$params = $currentMenuItem->params;
// Access param you want
$yourParameter = $params->get('yourParameter');

To access Menu parameters from a known Itemid

use Joomla\CMS\Factory;

$app = Factory::getApplication();
// Get Itemid from URL
$input = Factory::getApplication()->input;
$itemId = $input->get->get('Itemid', '0', 'INT');
// Get menu from Itemid
$menuItem = $app->getMenu()->getItem($itemId);
// Get params for menuItem
$params = $menuItem->params;
// Access param you want
$yourParameter = $params->get('yourParameter');

Template parameters from inside a template

$param = $this->params->get('paramName', defaultValue);

Template parameters from outside a template

use Joomla\CMS\Factory;

$app = Factory::getApplication('site');
$template = $app->getTemplate(true);
$param = $template->params->get('paramName', defaultValue);