app/views/bulk_actions/_druids.html.erb
<div data-bulk-actions-target="commonFields">
<% if search_state.has_constraints? %>
<%= render Blacklight::HiddenSearchStateComponent.new(params: Blacklight::Parameters.sanitize(search_state.to_h)) %>
<button class='btn btn-primary' data-action="click->bulk-actions#populateDruids">
Populate with previous search
</button>
<% end %>
<div class='mb-3'>
<label for='druids'>Druids to perform bulk action on</label>
<textarea id='druids' name='druids' class='form-control' rows='10' data-bulk-actions-target="druids"></textarea>
</div>
</div>