<% # expects "bookmarkable" %> <% if bookmarkable.is_a?(ExternalWork) %> <%= render 'external_works/work_module', external_work: bookmarkable, bookmarkable: bookmarkable %> <% elsif bookmarkable.is_a?(Series) %> <%= render 'series/series_module', series: bookmarkable %> <% else %> <%= render 'works/work_module', work: bookmarkable %> <% end %>