app/views/opinio/comments/_new.html.erb
<div id="new_comment">
<% if current_commenter %>
<h3><%= t('opinio.messages.add_comment') %></h3>
<%= form_for Comment.new, :remote => false do |f| %>
<p>
<%= f.text_area :body %>
</p>
<%= hidden_field_tag :commentable_id, commentable.id %>
<%= hidden_field_tag :commentable_type, commentable.class.base_class.name.to_s %>
<%= f.submit t('opinio.actions.add') %>
<% end %>
<% else %>
<p>
<%= t('opinio.messages.must_be_logged_in_to_comment') %>
</p>
<% end %>
</div>