link_to from controller

I need to use 'link_to' dynamically in my view.

So, in my controller I wrote:

  @right_part = " <%= link_to( 'Next', :action => '/index', :id => 3)%>"

And in my view I'm trying to get a link:

  <%= @right_part %>

But all this doesn't work. Help me.

You can't and shouldn't be doing this inside a controller. Just do it
in the view.