scinote-web/app/views/my_modules/protocols/_print_protocol_button.html.erb

<a href="#" class="btn btn-default" data-toggle="modal" data-target="#print-protocol-modal">
  <span class="fas fa-print" aria-hidden="true"></span>
  <span><%=t "protocols.print.button" %></span>
</a>

<div class="modal"
     id="print-protocol-modal"
     tabindex="-1"
     role="dialog"
     aria-labelledby="print-protocol-modal-label">
  <%= bootstrap_form_tag({ url: print_protocol_path(protocol), method: :get, html: { class: 'print-protocol-form', id: "print-protocol-form", target: '_blank' } }) do %>
    <div class="modal-dialog" role="document">
      <div class="modal-content">
        <div class="modal-header">
          <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
          <h4 class="modal-title" id="print-protocol-modal-label"><%= t("protocols.print.modal.title") %></h5>
        </div>
        <div class="modal-body">
          <p><%= t("protocols.print.modal.content") %></p>
          <div class="sci-checkbox-container">
            <%= check_box_tag :include_comments, 1, true, { class: "sci-checkbox" } %>
            <span class="sci-checkbox-label"></span>
          </div>
          <small><%= t("protocols.print.modal.include_comments") %></small>
        </div>
        <div class="modal-footer">
          <div class="pull-right">
            <button type="button" class="btn btn-secondary" data-dismiss="modal"><%=t "general.cancel" %></button>
            <input type="submit" value="<%= t("protocols.print.button") %>", class="btn btn-primary">
          </div>
        </div>
      </div>
    </div>
  <% end %>
</div>