Listing certifications
<%= link_to 'Create Certification', new_certification_path if can? :create, Certification %>
<% @certifications.each do |certification| %>
- <%= link_to certification.name, certification %>
<% if can? :update, certification %> | <%= link_to 'Edit', edit_certification_path(certification) %><% end %>
<% if can? :delete, certification %> | <%= link_to 'Destroy', certification, :confirm => 'Are you sure?', :method => :delete %><% end %>
<% end %>