Ensure index will be unique

Author: fbacall

app/views/common/_people_form.html.erb

@@ -20,9 +20,10 @@
   <input type="hidden" name="<%= "#{model_name}[#{field_name}][0]" -%>" value=""/>
 
   <div data-role="people-form-list">
+    <% id_offset = Person.maximum(:id) || 0 # Prevent collision with real IDs %>
     <% f.object.send(field_name).each_with_index do |person, index| %>
       <%= render partial: 'common/person_form',
-                 locals: { field_prefix: "#{model_name}[#{field_name}]", index: person.id || (index + 1), person: person, role: role } %>
+                 locals: { field_prefix: "#{model_name}[#{field_name}]", index: person.id || (index + id_offset + 1), person: person, role: role } %>
     <% end %>
   </div>