ajax_add_to_cart.module in Ajax Add to Cart 8

Contains ajax_add_to_cart.module.

File

ajax_add_to_cart.module

<?php

/**
 * @file
 * Contains ajax_add_to_cart.module.
 */
use Drupal\ajax_add_to_cart\Helper\AjaxCartHelper;
use Drupal\commerce_cart\Form\AddToCartFormInterface;
use Drupal\Core\Ajax\AjaxResponse;
use Drupal\Core\Ajax\ReplaceCommand;
use Drupal\Core\Routing\RouteMatchInterface;

/**
 * Implements hook_help().
 */
function ajax_add_to_cart_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {

    // Main module help for the ajax_add_to_cart module.
    case 'help.page.ajax_add_to_cart':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Add ajax add to cart functionality.') . '</p>';
      return $output;
    default:
  }
}

/**
 * Define changes for standard forms.
 */
function ajax_add_to_cart_form_alter(&$form, &$form_state, $form_id) {

  // Check if the form builder implements the AddToCartFormInterface.
  if ($form_state
    ->getBuildInfo()['callback_object'] instanceof AddToCartFormInterface) {

    // Using getInstanace method to create Object.
    $object = AjaxCartHelper::getInstance();
    $object
      ->ajaxAddToCartAjaxForm($form_id, $form);
  }
}

/**
 * Define a validation for forms.
 */
function ajax_add_to_cart_ajax_validate(&$form, $form_state) {
  $response = new AjaxResponse();
  $form_id = $form_state
    ->getUserInput()['form_id'];
  if ($form_state
    ->hasAnyErrors()) {

    // If form is having errors, rebuild form.
    $response
      ->addCommand(new ReplaceCommand('#commerce-product-' . $form_id, $form));
  }
  else {

    // Using getInstanace method to create Object.
    $object = AjaxCartHelper::getInstance();

    // If validated successfully submit form.
    $object
      ->ajaxAddToCartAjaxResponse($form_id, $response);
  }
  return $response;
}

/**
 * Implements hook_preprocess_block().
 */
function ajax_add_to_cart_preprocess_block(&$vars) {
  if ($vars['base_plugin_id'] == 'commerce_cart') {

    // Add a class to the cart block so that we can replace it using Ajax.
    $vars['attributes']['class'][] = 'block-commerce-cart';
  }
}

Functions

Name	Description
ajax_add_to_cart_ajax_validate	Define a validation for forms.
ajax_add_to_cart_form_alter	Define changes for standard forms.
ajax_add_to_cart_help	Implements hook_help().
ajax_add_to_cart_preprocess_block	Implements hook_preprocess_block().