module ActiveAdmin::ViewHelpers::AutoLinkHelper

def active_admin_resource_for(klass)

Returns the ActiveAdmin::Resource instance for a class 
def active_admin_resource_for(klass)
  if respond_to? :active_admin_namespace
    active_admin_namespace.resource_for klass
  end
end

def auto_link(resource, content = display_name(resource))


eg: auto_link(@post, "My Link")
You can pass in the content to display

The default content in the link is returned from ActiveAdmin::ViewHelpers::DisplayHelper#display_name

the object is returned.
the resource has not been registered, a string representation of
Automatically links objects to their resource controllers. If 
def auto_link(resource, content = display_name(resource))
  if url = auto_url_for(resource)
    link_to content, url
  else
    content
  end
end

def auto_url_for(resource)

Like `auto_link`, except that it only returns a URL instead of a full tag 
def auto_url_for(resource)
  config = active_admin_resource_for(resource.class)
  return unless config
  if config.controller.action_methods.include?("show") &&
    authorized?(ActiveAdmin::Auth::READ, resource)
    url_for config.route_instance_path resource, url_options
  elsif config.controller.action_methods.include?("edit") &&
    authorized?(ActiveAdmin::Auth::EDIT, resource)
    url_for config.route_edit_instance_path resource, url_options
  end
end