class ActiveAdmin::DSL

def controller(&block)


end

end
end
# Method gets added to Admin::PostsController
def some_method_on_controller
controller do

ActiveAdmin.register Post do

Example:

block, it will be evaluated in the controller.
Returns the controller for this resource. If you pass a 
def controller(&block)
  @config.controller.class_exec(&block) if block_given?
  @config.controller
end