Can I get the name of the current controller in the view ?

There is a solution for controller in view:

Controller_name holds the name of the controller used to serve  current view.

Note: The :controller and :action keys  use the methods controller_name and action_name instead to access  values.

ActionController Parameters:

CSS  active class  link full page is currently open that  can  different  style.static_pages controller with an about action, 

<li>
  <a class='button <% if controller.controller_name == "static_pages" && controller.action_name == "about" %>active<%end%>' href="/about">
    About Us
  </a>
</li>

Here alternatively try by using this below command: 

#to get controller name:
<%= controller.controller_name %>
#=> 'users'
 
#to get action name, it is the method:
<%= controller.action_name %>
#=> 'show'
 
#to get id information:
<%= ActionController::Routing::Routes.recognize_path(request.url)[:id] %>
#=> '23'
 
# or display nicely
<%= debug Rails.application.routes.recognize_path(request.url) %>