appointment_group_updated.summary.erb

<% define_content :link do %>
  <%= appointment_group_url(asset) %>
<% end %>

<% define_content :subject do %>
  <%= t('subject', 'Appointment "%{appointment_name}" has been updated (%{course})', :appointment_name => asset.title, :course => asset.contexts_for_user(user).map(&:name).join(", ")) %>
<% end %>

<%= t :message, 'Time slots have been added to "%{appointment_name}" and are available for signup (%{dates}).', :appointment_name => asset.title, :dates => date_string(asset.start_at, asset.end_at, :no_words) %>