app/views/sdb/sample_manifests/_pool.html.erb
<br>
<% if sample_manifest.asset_type == "library" %>
<%= form_for :pooling, url: new_pooling_path, method: :get do |form| -%>
<% sample_manifest.barcodes.each do |barcode| %>
<%= form.hidden_field :barcodes, multiple: true, value: barcode %>
<% end %>
<%= form.submit 'Pool', class: 'btn btn-success' %>
<% end %>
<% end %>