<% form_for [:human, @man] do |f| %>
  <%= f.error_messages %>
  <table>
    <% f.fields_for :mens do |man_form|%>
      <tr><td><%= man_form.label "Date <em>*</em>" %> </td></tr>
      <tr><td><%= man_form.date_select :date,
                                       :order => [:day,:month,:year],
                                       :start_year => 2000, :end_year => 2030 %></td></tr>

      <tr><td><%= man_form.label "Select your workers <em>*</em>" %> </td></tr>
      <% Workers.all.each_with_index do |worker, index| %>
          <tr><td><%= f.check_box "man[worker][#{index}]" %> <%= worker.name %> </td></tr>
      <% end %>
   <% end %>
<% end %>

#-----------------------------------------------------------------------------------------------

#Render form error -->

#undefined method `man[worker][0]'