what is the event that is triggered after the save config action is performed in magento 2 Stores - Configuration, and how to write a simple observer method after the save is done.


Following event are fire after System->configuration save.

admin_system_config_changed_section_{$section} -> here $section is 'general' etc.

Here is an example for 'admin_system_config_changed_section_general' event. etc/events.xml

<?xml version="1.0" encoding="UTF-8"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
    <event name="admin_system_config_changed_section_general">
        <observer name="custom_admin_system_config_changed_section_general" instance="[Vendor]\[Module]\Observer\ConfigObserver"/>

and observer class is "[Vendor][Module]\Observer\ConfigObserver"

namespace [Vendor]\[Module]\Observer;

use Magento\Framework\Event\ObserverInterface;
use Magento\Framework\Event\Observer as EventObserver;
use Psr\Log\LoggerInterface as Logger;

class ConfigObserver implements ObserverInterface
     * @var Logger
    protected $logger;

     * @param Logger $logger
    public function __construct(
        Logger $logger
    ) {
        $this->logger = $logger;

    public function execute(EventObserver $observer)

You can do this same thing using plugin. Create di.xml "etc/di.xml"

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <type name="Magento\Config\Model\Config">
        <plugin name="admin_system_config_save_plugin" type="[Vendor]\[Module]\Plugin\ConfigPlugin" sortOrder="1"/>

And Plugin class '[Vendor][Module]/Plugin/ConfigPlugin.php'

namespace [Vendor]\[Module]\Plugin;

class ConfigPlugin
    public function aroundSave(
        \Magento\Config\Model\Config $subject,
        \Closure $proceed
    ) {
        // your custom logic
        return $proceed();


'admin_system_config_changed_section_general' this event dispatch with 2 argument (website and store). So If you need more data like configuration fields values then you should go with 2nd solution(plugin).

  • I have tagged the question as magento 2, the answer is for magento 1 isn't? – Dev Apr 4 '16 at 2:13
  • You should add 'Magento2' keyword in your question, tag is not enough. – Sohel Rana Apr 4 '16 at 6:35
  • Ok, I have edited that, and thought of "Stores -> Configuration" would make sense instead of "System -> Configuration". – Dev Apr 4 '16 at 6:42
  • answer edited for Magento2 – Sohel Rana Apr 4 '16 at 7:11
  • 1
    'admin_system_config_changed_section_general' this event dispatch with 2 argument (website and store). So If you need more data then you should go with 2nd solution(plugin) – Sohel Rana Apr 6 '16 at 10:00

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