% content_for :heading do %>
<%= @subscribed ? t(".unsubscribe.heading") : t(".subscribe.heading") %>
<% end %>
<%= render :partial => "heading", :object => @changeset, :as => "changeset" %>
<%= bootstrap_form_tag :method => (@subscribed ? :delete : :post) do |f| %>
<% if params[:referer] -%>
<%= f.hidden_field :referer, :value => params[:referer] %>
<% end -%>
<%= f.primary @subscribed ? t(".unsubscribe.button") : t(".subscribe.button") %>
<% end %>