app/views/search_results/sections/_datasets.html.erb
<% if @datasets.any? %>
<div class="form-group">
<%= label_tag 'ds', t('txt.views.search_results.datasets') %>
<% @datasets.each_with_index do |dataset, idx| %>
<div class="form-check">
<%= check_box_tag "ds[]", dataset.name, search_dataset_selected?(dataset.name), class: 'form-check-input', id: "datasets_#{idx}" %>
<%= label_tag "datasets_#{idx}", dataset.name, class: 'form-check-label' %>
</div>
<% end %>
</div>
<% end %>