gistfile1.haml

-# render your objects with their dom_id from ActionController::RecordIdentifier
-# this means each TR will have an id like "object_47"
%table
  - @objects.each do |obj|
    %tr{:id => dom_id(obj)}
      %td= h obj.title
      %td
        %li= link_to "Edit", edit_obj_path(obj)

gistfile2.feature

# Step for clicking on edit for that row
When I follow "Edit" for object "My Object"

gistfile3.ru

# Step definition that uses the existing with step restricted to within the dom id
When /^I follow "([^\"]*)" for object "([^\"]*)"$/ do |link, object_name|
  extend ActionController::RecordIdentifier
  o = Object.find_by_name(object_name)
  raise "Object not found" unless o
  When %Q[I follow "#{link}" within "##{dom_id(o)}"]
end