XF 2.0 Thread Edit Modal Customize

[viktor_kovtun]

I need to customize Edit Thread Modal.
It is no problem to make template modification and db alteration.

But I am stuck which event listener should I use to make this new value stored in xf_thread table.

Which method this form is going to be submitted?

I am PHP developer but very new to Xenforo.

I need your kind help!

 

[viktor_kovtun]

I extended
setupThreadEdit method from 'XF\Api\Controller\Thread'

but when I edit Thread it doesn't trigger my extended method.