Observer event to check customer login on checkout page

[jacktorris]

I  have created observer that will be fired after customer will login and update the price of the added to cart.

Now thing is when i try to login on checkout page it doesn't fire.  it works for default login page. but on checkout page it doesn't work.  

I have used following event to fire my observer code:

 <event name="customer_login">
        <observer name="customer_login_observer" instance="Customergroup\Updategroup\Observer\CustomerLogin" />
    </event>

this event is not working when i login on chekout page.

How can i check if customer is logged in then update the cart item on checkout page?

Any help would be appreciated.

[Rakesh Jesadiya · Accepted solution]

You can use below event for checkout customer login page,

<event name="controller_action_postdispatch_customer_ajax_login">

[haresh79]

Thanks Rakesh bhai.  How did you check that event?  I mean how did you get to know that event is use by that?    I am new to m2 so that would help me..

[Rakesh Jesadiya]

When you check in checkout page email login, after valid email and password on checkout press on login button they will call one request customer/ajax/login. so based on that request we can set pre or post dispatch request for any magento event.

[Sunil Patel]

Hello,

<event name="controller_action_postdispatch_customer_ajax_login">

you can make any controller  postdispatch and predispatch of any event .

e.g your controller name is test_test_index

you can make event like

<event name="controller_action_postdispatch_test_test_index">

same for predispatch

<event name="controller_action_predispatch_customer_ajax_login">

[jacktorris]

Appreciate your reply.  it helped me to understand the predispatch and postdispatch.

[saulo_dscf]

Magento 2.3 Customer Login event can be instantiated using,

<event name="customer_login">
    <observer name="vendor_module_some_event_name_that_makes_sense" instance="VendorName\ModuleName\Observer\DirPath\ToYour\Logic\FileObserver" />
</event>