I'm trying to determine on a plugin if the request comes from admin or for frontend. I had to make a plugin for Magento\Framework\App\Config\ScopeConfigInterface, and in my plugin I need to detect the area code on my aroundGetValue function. I'm trying this:

$om = \Magento\Framework\App\ObjectManager::getInstance();
$area = $om->get('Magento\Framework\App\State');
$areaCode= $area->getAreaCode();

But when I deploy my code I'm getting this error:

  Area code is not set

I don't know how to check at that level if the request comes from admin or for frontend. Can anyone help me with this?

2 Answers 2


On your construct, put:

public function __construct(\Magento\Framework\App\State $state)

And try again

  • Hi Max! If I set the area code, then on the function where I need to get the area code I will get the area code that I setted on the construct, that won't be the real one Jan 23, 2018 at 21:51
  • Ah ok, if you change setAreaCode for getAreaCode or you can check current url
    – Max Souza
    Jan 23, 2018 at 22:01
  • not advisable to set area code in construct as it can break a lot of things, do it somewhere else in the class with a try catch if you need to check if its set first
    – DWils
    Jun 21, 2019 at 21:45
  • That doesn't answer the question. May 15 at 14:36

I'd suggest to put your events.xml file not in etc/, but in etc/adminhtml/ and in etc/frontend/ with different methods. That way you can be sure that your observer is only called in the correct areas.

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