basic_cart.cart.inc in Basic cart 7.3

Basic cart shopping cart implementation functions.

File

basic_cart.cart.inc

<?php

/**
 * @file
 * Basic cart shopping cart implementation functions.
 */

/**
 * Callback function for cart listing.
 */
function basic_cart_cart() {
  $cart = basic_cart_get_cart();
  if (empty($cart)) {
    return t('Your cart is empty.');
  }
  return drupal_get_form('basic_cart_cart_form');
}

/**
 * Shopping cart form.
 */
function basic_cart_cart_form() {

  // Getting the shopping cart.
  $cart = basic_cart_get_cart();

  // And now the form.
  $form['cartcontents'] = array(
    // Make the returned array come back in tree form.
    '#tree' => TRUE,
    '#prefix' => '<div class="basic-cart-cart basic-cart-grid">',
    '#suffix' => '</div>',
  );

  // Cart elements.
  foreach ($cart as $nid => $node) {
    $form['cartcontents'][$nid] = array(
      '#type' => 'textfield',
      '#size' => 1,
      '#default_value' => $node->basic_cart_quantity,
      '#theme' => 'basic_cart_render_cart_element',
    );
  }

  // Total price.
  $form['total_price'] = array(
    '#markup' => t('Total price'),
    '#prefix' => '<div class="basic-cart-cart basic-cart-grid">',
    '#suffix' => '</div>',
    '#theme' => 'basic_cart_cart_total_price',
  );

  // Buttons.
  $form['buttons'] = array(
    // Make the returned array come back in tree form.
    '#tree' => TRUE,
    '#prefix' => '<div class="row"><div class="basic-cart-call-to-action cell">',
    '#suffix' => '</div></div>',
  );

  // Update button.
  $form['buttons']['update'] = array(
    '#type' => 'submit',
    '#value' => t('Update'),
  );

  // Checkout button.
  if (module_exists('basic_cart_order')) {
    $form['buttons']['checkout'] = array(
      '#type' => 'submit',
      '#value' => t('Checkout'),
    );
  }
  return $form;
}

/**
 * Shopping cart form.
 */
function basic_cart_cart_form_submit($form_id, $form_state) {
  foreach ($form_state['values']['cartcontents'] as $nid => $value) {
    $quantity = (int) $value;
    if ($quantity > 0) {
      $_SESSION['basic_cart']['cart'][$nid]->basic_cart_quantity = $quantity;
    }
    elseif ($quantity == 0) {
      unset($_SESSION['basic_cart']['cart'][$nid]);
    }
  }
  if (module_exists('basic_cart_order') && $form_state['values']['op'] == t('Checkout')) {
    drupal_goto('checkout');
  }
  else {
    drupal_set_message(t('Shopping cart updated.'));
  }
}

/**
 * Callback function for cart/add/.
 *
 * @param int $nid
 *   We are using the node id to store the node in the shopping cart
 */
function basic_cart_add_to_cart($nid = NULL, $quantity = 1) {
  $nid = (int) $nid;
  $quantity = (int) $quantity;
  if ($nid > 0 && $quantity > 0) {

    // If a node is added more times, just update the quantity.
    $cart = basic_cart_get_cart();
    if (!empty($cart) && in_array($nid, array_keys($cart))) {

      // Clicked 2 times on add to cart button. Increment quantity.
      $_SESSION['basic_cart']['cart'][$nid]->basic_cart_quantity += $quantity;
    }
    else {
      $node = node_load($nid);
      $node->basic_cart_quantity = $quantity;

      // Adding description.
      $body = field_get_items('node', $node, 'body');
      $description = isset($body[0]['value']) ? check_plain(strip_tags($body[0]['value'])) : '';
      $node->basic_cart_node_description = $description;

      // Unit price.
      $unit_price = field_get_items('node', $node, 'price');
      $unit_price = isset($unit_price[0]['value']) ? check_plain(strip_tags($unit_price[0]['value'])) : 0;
      $node->basic_cart_unit_price = $unit_price;

      // Storing in session.
      $_SESSION['basic_cart']['cart'][$nid] = $node;
    }
  }
  drupal_set_message(t('Shopping cart updated.'));
  $redirect = variable_get('basic_cart_redirect_user_after_add_to_cart', FALSE);
  if (empty($redirect)) {
    drupal_goto('cart');
  }
  elseif ($redirect == '<none>') {
    $referer = $_SERVER["HTTP_REFERER"];
    drupal_goto($referer);
  }
  else {
    drupal_goto($redirect);
  }
}

/**
 * Callback function for cart/remove/.
 *
 * @param int $nid
 *   We are using the node id to remove the node in the shopping cart
 */
function basic_cart_remove_from_cart($nid = NULL) {
  $nid = (int) $nid;
  if ($nid > 0) {
    unset($_SESSION['basic_cart']['cart'][$nid]);
  }
  drupal_set_message(t('Shopping cart updated.'));
  drupal_goto('cart');
}

/**
 * Function for shopping cart retrieval.
 *
 * @param int $nid
 *   We are using the node id to store the node in the shopping cart
 *
 * @return mixed
 *   Returning the shopping cart contents.
 *   An empty array if there is nothing in the cart
 */
function basic_cart_get_cart($nid = NULL) {
  if (isset($nid)) {
    return $_SESSION['basic_cart']['cart'][$nid];
  }
  if (isset($_SESSION['basic_cart']['cart'])) {
    return $_SESSION['basic_cart']['cart'];
  }

  // Empty cart.
  return array();
}

/**
 * Returns the final price for the shopping cart.
 *
 * @return mixed $total_price
 *   The total price for the shopping cart. 
 */
function basic_cart_get_total_price() {

  // Building the return array.
  $return = array(
    'price' => 0,
    'vat' => 0,
    'total' => 0,
  );
  $cart = basic_cart_get_cart();
  if (empty($cart)) {
    return (object) $return;
  }
  $total_price = 0;
  foreach ($cart as $nid => $node) {
    if (isset($node->basic_cart_quantity) && isset($node->basic_cart_unit_price)) {
      $total_price += $node->basic_cart_quantity * $node->basic_cart_unit_price;
    }
  }
  $return['price'] = $total_price;

  // Checking whether to apply the VAT or not.
  $vat_is_enabled = (int) variable_get('basic_cart_vat_state');
  if (!empty($vat_is_enabled) && $vat_is_enabled) {
    $vat_value = (double) variable_get('basic_cart_vat_value');
    $vat_value = $total_price * $vat_value / 100;
    $total_price += $vat_value;

    // Adding VAT and total price to the return array.
    $return['vat'] = $vat_value;
  }
  $return['total'] = $total_price;
  return (object) $return;
}

/**
 * Shopping cart reset.
 */
function basic_cart_empty_cart() {
  unset($_SESSION['basic_cart']['cart']);
}

/**
 * Formats the input $price in the desired format.
 *
 * @param float $price
 *   The price in the raw format.
 * @return $price
 *   The price in the custom format.
 */
function basic_cart_price_format($price) {
  $format = variable_get('basic_cart_price_format');
  $currency = check_plain(variable_get('basic_cart_currency'));
  $price = (double) $price;
  switch ($format) {
    case 0:
      $price = number_format($price, 2, ',', ' ') . ' ' . $currency;
      break;
    case 1:
      $price = number_format($price, 2, '.', ' ') . ' ' . $currency;
      break;
    case 2:
      $price = number_format($price, 2, '.', ',') . ' ' . $currency;
      break;
    case 3:
      $price = number_format($price, 2, ',', '.') . ' ' . $currency;
      break;
    case 4:
      $price = $currency . ' ' . number_format($price, 2, ',', ' ');
      break;
    case 5:
      $price = $currency . ' ' . number_format($price, 2, '.', ' ');
      break;
    case 6:
      $price = $currency . ' ' . number_format($price, 2, '.', ',');
      break;
    case 7:
      $price = $currency . ' ' . number_format($price, 2, ',', '.');
      break;
    default:
      $price = number_format($price, 2, ',', ' ') . ' ' . $currency;
      break;
  }
  return $price;
}

/**
 * Returns the available price formats.
 *
 * @return $formats
 *   A list with the available price formats.
 */
function _basic_cart_price_format() {
  $currency = variable_get('basic_cart_currency');
  return array(
    0 => t('1 234,00 @currency', array(
      '@currency' => $currency,
    )),
    1 => t('1 234.00 @currency', array(
      '@currency' => $currency,
    )),
    2 => t('1,234.00 @currency', array(
      '@currency' => $currency,
    )),
    3 => t('1.234,00 @currency', array(
      '@currency' => $currency,
    )),
    4 => t('@currency 1 234,00', array(
      '@currency' => $currency,
    )),
    5 => t('@currency 1 234.00', array(
      '@currency' => $currency,
    )),
    6 => t('@currency 1,234.00', array(
      '@currency' => $currency,
    )),
    7 => t('@currency 1.234,00', array(
      '@currency' => $currency,
    )),
  );
}

Functions

Name	Description
basic_cart_add_to_cart	Callback function for cart/add/.
basic_cart_cart	Callback function for cart listing.
basic_cart_cart_form	Shopping cart form.
basic_cart_cart_form_submit	Shopping cart form.
basic_cart_empty_cart	Shopping cart reset.
basic_cart_get_cart	Function for shopping cart retrieval.
basic_cart_get_total_price	Returns the final price for the shopping cart.
basic_cart_price_format	Formats the input $price in the desired format.
basic_cart_remove_from_cart	Callback function for cart/remove/.
_basic_cart_price_format	Returns the available price formats.