diff options
Diffstat (limited to 'system/libraries/Cart.php')
| -rw-r--r-- | system/libraries/Cart.php | 140 |
1 files changed, 70 insertions, 70 deletions
diff --git a/system/libraries/Cart.php b/system/libraries/Cart.php index 643d2eca4..f3969ef2c 100644 --- a/system/libraries/Cart.php +++ b/system/libraries/Cart.php @@ -29,7 +29,7 @@ class CI_Cart { // These are the regular expression rules that we use to validate the product ID and product name var $product_id_rules = '\.a-z0-9_-'; // alpha-numeric, dashes, underscores, or periods var $product_name_rules = '\.\:\-_ a-z0-9'; // alpha-numeric, dashes, underscores, colons or periods - + // Private variables. Do not change! var $CI; var $_cart_contents = array(); @@ -39,12 +39,12 @@ class CI_Cart { * Shopping Class Constructor * * The constructor loads the Session class, used to store the shopping cart contents. - */ + */ function CI_Cart($params = array()) - { + { // Set the super object to a local variable for use later $this->CI =& get_instance(); - + // Are any config settings being passed manually? If so, set them $config = array(); if (count($params) > 0) @@ -54,10 +54,10 @@ class CI_Cart { $config[$key] = $val; } } - + // Load the Sessions class $this->CI->load->library('session', $config); - + // Grab the shopping cart array from the session table, if it exists if ($this->CI->session->userdata('cart_contents') !== FALSE) { @@ -66,15 +66,15 @@ class CI_Cart { else { // No cart exists so we'll set some base values - $this->_cart_contents['cart_total'] = 0; - $this->_cart_contents['total_items'] = 0; + $this->_cart_contents['cart_total'] = 0; + $this->_cart_contents['total_items'] = 0; } - + log_message('debug', "Cart Class Initialized"); } // -------------------------------------------------------------------- - + /** * Insert items into the cart and save it to the session table * @@ -90,15 +90,15 @@ class CI_Cart { log_message('error', 'The insert method must be passed an array containing data.'); return FALSE; } - - // You can either insert a single product using a one-dimensional array, + + // You can either insert a single product using a one-dimensional array, // or multiple products using a multi-dimensional one. The way we // determine the array type is by looking for a required array key named "id" // at the top level. If it's not found, we will assume it's a multi-dimensional array. - - $save_cart = FALSE; + + $save_cart = FALSE; if (isset($items['id'])) - { + { if ($this->_insert($items) == TRUE) { $save_cart = TRUE; @@ -114,7 +114,7 @@ class CI_Cart { { $save_cart = TRUE; } - } + } } } @@ -129,7 +129,7 @@ class CI_Cart { } // -------------------------------------------------------------------- - + /** * Insert * @@ -145,9 +145,9 @@ class CI_Cart { log_message('error', 'The insert method must be passed an array containing data.'); return FALSE; } - + // -------------------------------------------------------------------- - + // Does the $items array contain an id, quantity, price, and name? These are required if ( ! isset($items['id']) OR ! isset($items['qty']) OR ! isset($items['price']) OR ! isset($items['name'])) { @@ -156,7 +156,7 @@ class CI_Cart { } // -------------------------------------------------------------------- - + // Prep the quantity. It can only be a number. Duh... $items['qty'] = trim(preg_replace('/([^0-9])/i', '', $items['qty'])); // Trim any leading zeros @@ -167,9 +167,9 @@ class CI_Cart { { return FALSE; } - + // -------------------------------------------------------------------- - + // Validate the product ID. It can only be alpha-numeric, dashes, underscores or periods // Not totally sure we should impose this rule, but it seems prudent to standardize IDs. // Note: These can be user-specified by setting the $this->product_id_rules variable. @@ -180,7 +180,7 @@ class CI_Cart { } // -------------------------------------------------------------------- - + // Validate the product name. It can only be alpha-numeric, dashes, underscores, colons or periods. // Note: These can be user-specified by setting the $this->product_name_rules variable. if ( ! preg_match("/^[".$this->product_name_rules."]+$/i", $items['name'])) @@ -195,7 +195,7 @@ class CI_Cart { $items['price'] = trim(preg_replace('/([^0-9\.])/i', '', $items['price'])); // Trim any leading zeros $items['price'] = trim(preg_replace('/(^[0]+)/i', '', $items['price'])); - + // Is the price a valid number? if ( ! is_numeric($items['price'])) { @@ -204,13 +204,13 @@ class CI_Cart { } // -------------------------------------------------------------------- - + // We now need to create a unique identifier for the item being inserted into the cart. - // Every time something is added to the cart it is stored in the master cart array. - // Each row in the cart array, however, must have a unique index that identifies not only - // a particular product, but makes it possible to store identical products with different options. - // For example, what if someone buys two identical t-shirts (same product ID), but in - // different sizes? The product ID (and other attributes, like the name) will be identical for + // Every time something is added to the cart it is stored in the master cart array. + // Each row in the cart array, however, must have a unique index that identifies not only + // a particular product, but makes it possible to store identical products with different options. + // For example, what if someone buys two identical t-shirts (same product ID), but in + // different sizes? The product ID (and other attributes, like the name) will be identical for // both sizes because it's the same shirt. The only difference will be the size. // Internally, we need to treat identical submissions, but with different options, as a unique product. // Our solution is to convert the options array to a string and MD5 it along with the product ID. @@ -225,19 +225,19 @@ class CI_Cart { // Technically, we don't need to MD5 the ID in this case, but it makes // sense to standardize the format of array indexes for both conditions $rowid = md5($items['id']); - } + } // -------------------------------------------------------------------- // Now that we have our unique "row ID", we'll add our cart items to the master array - + // let's unset this first, just to make sure our index contains only the data from this submission - unset($this->_cart_contents[$rowid]); - + unset($this->_cart_contents[$rowid]); + // Create a new index with our new row ID $this->_cart_contents[$rowid]['rowid'] = $rowid; - - // And add the new items to the cart array + + // And add the new items to the cart array foreach ($items as $key => $val) { $this->_cart_contents[$rowid][$key] = $val; @@ -248,11 +248,11 @@ class CI_Cart { } // -------------------------------------------------------------------- - + /** * Update the cart * - * This function permits the quantity of a given item to be changed. + * This function permits the quantity of a given item to be changed. * Typically it is called from the "view cart" page if a user makes * changes to the quantity before checkout. That array must contain the * product ID and quantity for each item. @@ -269,8 +269,8 @@ class CI_Cart { { return FALSE; } - - // You can either update a single product using a one-dimensional array, + + // You can either update a single product using a one-dimensional array, // or multiple products using a multi-dimensional one. The way we // determine the array type is by looking for a required array key named "id". // If it's not found we assume it's a multi-dimensional array @@ -292,7 +292,7 @@ class CI_Cart { { $save_cart = TRUE; } - } + } } } @@ -307,11 +307,11 @@ class CI_Cart { } // -------------------------------------------------------------------- - + /** * Update the cart * - * This function permits the quantity of a given item to be changed. + * This function permits the quantity of a given item to be changed. * Typically it is called from the "view cart" page if a user makes * changes to the quantity before checkout. That array must contain the * product ID and quantity for each item. @@ -319,7 +319,7 @@ class CI_Cart { * @access private * @param array * @return bool - */ + */ function _update($items = array()) { // Without these array indexes there is nothing we can do @@ -327,7 +327,7 @@ class CI_Cart { { return FALSE; } - + // Prep the quantity $items['qty'] = preg_replace('/([^0-9])/i', '', $items['qty']); @@ -336,7 +336,7 @@ class CI_Cart { { return FALSE; } - + // Is the new quantity different than what is already saved in the cart? // If it's the same there's nothing to do if ($this->_cart_contents[$items['rowid']]['qty'] == $items['qty']) @@ -348,18 +348,18 @@ class CI_Cart { // If the quantity is greater than zero we are updating if ($items['qty'] == 0) { - unset($this->_cart_contents[$items['rowid']]); + unset($this->_cart_contents[$items['rowid']]); } else { $this->_cart_contents[$items['rowid']]['qty'] = $items['qty']; } - + return TRUE; } // -------------------------------------------------------------------- - + /** * Save the cart array to the session DB * @@ -383,20 +383,20 @@ class CI_Cart { } $total += ($val['price'] * $val['qty']); - + // Set the subtotal $this->_cart_contents[$key]['subtotal'] = ($this->_cart_contents[$key]['price'] * $this->_cart_contents[$key]['qty']); } // Set the cart total and total items. - $this->_cart_contents['total_items'] = count($this->_cart_contents); + $this->_cart_contents['total_items'] = count($this->_cart_contents); $this->_cart_contents['cart_total'] = $total; - + // Is our cart empty? If so we delete it from the session if (count($this->_cart_contents) <= 2) { $this->CI->session->unset_userdata('cart_contents'); - + // Nothing more to do... coffee time! return FALSE; } @@ -406,11 +406,11 @@ class CI_Cart { $this->CI->session->set_userdata(array('cart_contents' => $this->_cart_contents)); // Woot! - return TRUE; + return TRUE; } // -------------------------------------------------------------------- - + /** * Cart Total * @@ -423,7 +423,7 @@ class CI_Cart { } // -------------------------------------------------------------------- - + /** * Total Items * @@ -438,7 +438,7 @@ class CI_Cart { } // -------------------------------------------------------------------- - + /** * Cart Contents * @@ -450,16 +450,16 @@ class CI_Cart { function contents() { $cart = $this->_cart_contents; - + // Remove these so they don't create a problem when showing the cart table unset($cart['total_items']); unset($cart['cart_total']); - + return $cart; } // -------------------------------------------------------------------- - + /** * Has options * @@ -475,12 +475,12 @@ class CI_Cart { { return FALSE; } - + return TRUE; } // -------------------------------------------------------------------- - + /** * Product options * @@ -500,7 +500,7 @@ class CI_Cart { } // -------------------------------------------------------------------- - + /** * Format Number * @@ -515,15 +515,15 @@ class CI_Cart { { return ''; } - + // Remove anything that isn't a number or decimal point. $n = trim(preg_replace('/([^0-9\.])/i', '', $n)); - + return number_format($n, 2, '.', ','); } - + // -------------------------------------------------------------------- - + /** * Destroy the cart * @@ -535,9 +535,9 @@ class CI_Cart { function destroy() { unset($this->_cart_contents); - - $this->_cart_contents['cart_total'] = 0; - $this->_cart_contents['total_items'] = 0; + + $this->_cart_contents['cart_total'] = 0; + $this->_cart_contents['total_items'] = 0; $this->CI->session->unset_userdata('cart_contents'); } |