After delegate

afterdelegate.html.erb

<% @subjects.each do |subject| %>
		<tr>
			<th><%= subject.id %></th>
			<th><%= subject.identifier %></th>
			<th><%= subject.email %></th>
			<th><%= link_to "Edit Subject", edit_study_example_subject_path(@study,subject) %></th>
			<th>
				<%= form_for [@study, subject] , :html => {:method => :delete} do |f| %>
					 <%= f.submit "Delete", :class => "btn btn-info" %>
				<% end %>
			</th>
			<th><%= subject.created_at %></th>
		</tr>
<% end %>