= form_tag(EffectiveOrders.paypal[:paypal_url], method: :post) do
  = hidden_field_tag :cmd, '_s-xclick'
  = hidden_field_tag :encrypted, paypal_encrypted_payload(order)

  = submit_tag order_checkout_label(:paypal), class: 'btn btn-primary', data: { disable_with: 'Continuing...' }