Edit Topic

<%= simple_form_for(@forum_topic) do |f| %> <%= f.input :title %> <%= f.simple_fields_for :original_post do |pf| %> <%= text_field_tag "forum_topic[original_post_attributes][topic_id]", @forum_topic.id %> <%= pf.input :body %> <% end %> <%= f.button :submit %> <% end %>