app/views/studies/asset_groups/search.html.erb
<div class="page-header"><h1>Found <%= pluralize @assets.size, 'asset' %></h1></div>
<div class="page-header"><h1>Add to <%= @asset_group.name %></h1></div>
<%= form_for @asset_group, url: add_study_asset_group_path(@study, @asset_group), html: { method: :post } do |f| %>
<%= render_error_messages(@asset_group) %>
<% @assets.each do |asset| %>
<%= check_box :asset, asset.id, value: asset.id %> <%= label(:asset, asset.id, "#{asset.display_name} #{asset.label}") %><br/>
<% end %>
<p>
<%= f.submit "Create" %>
</p>
<% end %>
<%= link_to 'Back', study_asset_groups_path(@study) %>