Displaying the relay pickup points list during the checkout

As our module's aim is to make it possible for customers to choose a relay pickup point, we will use the displayAfterCarrier hook to create a modal DIV containing our relay points list on the checkout page, ready to show or hide whether our Carrier has been chosen or not.

The hookDisplayAfterCarrier($params) method uses this code:

public function hookDisplayAfterCarrier($params)
{
  $this->smarty->assign([
    'relays'=>$this->relays,
  ]);
  $relayCart = $this->findCheckoutRelayFromCart();
  if(!is_null($relayCart)){
    $this->smarty->assign([
      'id_relay_checked' => $relayCart->getRelay(),
    ]);
  }
  return $this->fetch(
    'module:whrelaycarrier/views/templates/hook
  ...