<% if ff.object.file.exists? %>
<% if can_view_or_download_step_assets(@protocol) %>
<%= link_to download_asset_path(ff.object), data: {no_turbolink: true} do %>
<%= image_tag(preview_asset_path ff.object) if ff.object.is_image? %>
<%= ff.object.file_file_name %>
<% end %>
<% else %>
<%= image_tag(preview_asset_path ff.object) if ff.object.is_image? %>
<%= ff.object.file_file_name %>
<% end %>
<% else %>
<%= ff.file_field :file %>
<% end %>