<div class="field">
  <div class="col-sm-4 filter_select attribute_select">
    <%= f.attribute_fields do |a| %>
      <%= a.attribute_select associations: [:threats] %>
    <% end %>
  </div>
  <div class="col-sm-3 filter_select">
    <%= f.predicate_select compounds: false, only: [:eq,:lt,:lteq,:gt,:gteq] %>
  </div>
  <div class="col-sm-4">
    <%= f.value_fields do |v| %>
      <!-- ------------------------------------ -->
      <!-- I want to compare with properties/attributes from the SRA model instead of inputting a value in a text field.
      Hence, choosing from a dropdown as with the attribute_fields -->
      <!-- ------------------------------------ -->
      <%= v.text_field :value, class: "form-control" %>
    <% end %>
  </div>
  <div class="col-sm-1">
    <%= link_to('#', class:"remove_fields") do %>
        <span class="glyphicon glyphicon-remove" aria-hidden="true"></span>
    <% end %>
  </div>
</div>