devicehub-teal/ereuse_devicehub/templates/inventory/actions.html

<div class="modal fade" id="actionModal" tabindex="-1" style="display: none;" aria-hidden="true">
  <div class="modal-dialog modal-fullscreen">
    <div class="modal-content">

      <div class="modal-header">
        <h5 class="modal-title">New Action</h5>
        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
      </div>

      <form action="{{ url_for('inventory.devices.lot_devices_add') }}" method="post">
      {{ form_lot_device.csrf_token }}
        <div class="modal-body">
          Please write a name of a lot
          <input class="devicesList" type="hidden" name="devices" />
          <p class="text-danger">
              You need select first some device before to do one action
          </p>
        </div>

        <div class="modal-footer">
          <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
          <input type="submit" class="btn btn-primary d-none" value="Create" />
        </div>
      </form>

    </div>
  </div>
</div>