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authorAndrew <browner12@gmail.com>2014-02-17 19:24:00 +0100
committerAndrew <browner12@gmail.com>2014-02-17 19:24:00 +0100
commit63cb46b94c4dda33e036643fbca3d94e0ba079f0 (patch)
treea8bc36fa23e3a7de491223c896d9aadaf4e8c408 /user_guide_src/source/libraries/cart.rst
parentb6d8b962e44202a74c9b9321a4a53f61a753fccf (diff)
parentffe8aded4d2210759fce3427ed04893e6c655006 (diff)
Merge branch 'develop' into patch-1
Diffstat (limited to 'user_guide_src/source/libraries/cart.rst')
-rw-r--r--user_guide_src/source/libraries/cart.rst170
1 files changed, 98 insertions, 72 deletions
diff --git a/user_guide_src/source/libraries/cart.rst b/user_guide_src/source/libraries/cart.rst
index fb92c280a..d7d495967 100644
--- a/user_guide_src/source/libraries/cart.rst
+++ b/user_guide_src/source/libraries/cart.rst
@@ -33,7 +33,7 @@ Initializing the Shopping Cart Class
utilize a database.
To initialize the Shopping Cart Class in your controller constructor,
-use the $this->load->library function::
+use the ``$this->load->library()`` method::
$this->load->library('cart');
@@ -49,16 +49,16 @@ Adding an Item to The Cart
==========================
To add an item to the shopping cart, simply pass an array with the
-product information to the $this->cart->insert() function, as shown
+product information to the ``$this->cart->insert()`` method, as shown
below::
$data = array(
- 'id' => 'sku_123ABC',
- 'qty' => 1,
- 'price' => 39.95,
- 'name' => 'T-Shirt',
- 'options' => array('Size' => 'L', 'Color' => 'Red')
- );
+ 'id' => 'sku_123ABC',
+ 'qty' => 1,
+ 'price' => 39.95,
+ 'name' => 'T-Shirt',
+ 'options' => array('Size' => 'L', 'Color' => 'Red')
+ );
$this->cart->insert($data);
@@ -88,7 +88,19 @@ array will be stored in the session. However, it is best to standardize
your data among all your products in order to make displaying the
information in a table easier.
-The insert() method will return the $rowid if you successfully insert a
+::
+
+ $data = array(
+ 'id' => 'sku_123ABC',
+ 'qty' => 1,
+ 'price' => 39.95,
+ 'name' => 'T-Shirt',
+ 'coupon' => 'XMAS-50OFF'
+ );
+
+ $this->cart->insert($data);
+
+The ``insert()`` method will return the $rowid if you successfully insert a
single item.
Adding Multiple Items to The Cart
@@ -102,26 +114,26 @@ same page.
::
$data = array(
- array(
- 'id' => 'sku_123ABC',
- 'qty' => 1,
- 'price' => 39.95,
- 'name' => 'T-Shirt',
- 'options' => array('Size' => 'L', 'Color' => 'Red')
- ),
- array(
- 'id' => 'sku_567ZYX',
- 'qty' => 1,
- 'price' => 9.95,
- 'name' => 'Coffee Mug'
- ),
- array(
- 'id' => 'sku_965QRS',
- 'qty' => 1,
- 'price' => 29.95,
- 'name' => 'Shot Glass'
- )
- );
+ array(
+ 'id' => 'sku_123ABC',
+ 'qty' => 1,
+ 'price' => 39.95,
+ 'name' => 'T-Shirt',
+ 'options' => array('Size' => 'L', 'Color' => 'Red')
+ ),
+ array(
+ 'id' => 'sku_567ZYX',
+ 'qty' => 1,
+ 'price' => 9.95,
+ 'name' => 'Coffee Mug'
+ ),
+ array(
+ 'id' => 'sku_965QRS',
+ 'qty' => 1,
+ 'price' => 29.95,
+ 'name' => 'Shot Glass'
+ )
+ );
$this->cart->insert($data);
@@ -136,15 +148,15 @@ helper </helpers/form_helper>`.
::
- <?php echo form_open('path/to/controller/update/function'); ?>
+ <?php echo form_open('path/to/controller/update/method'); ?>
<table cellpadding="6" cellspacing="1" style="width:100%" border="0">
<tr>
- <th>QTY</th>
- <th>Item Description</th>
- <th style="text-align:right">Item Price</th>
- <th style="text-align:right">Sub-Total</th>
+ <th>QTY</th>
+ <th>Item Description</th>
+ <th style="text-align:right">Item Price</th>
+ <th style="text-align:right">Sub-Total</th>
</tr>
<?php $i = 1; ?>
@@ -154,9 +166,9 @@ helper </helpers/form_helper>`.
<?php echo form_hidden($i.'[rowid]', $items['rowid']); ?>
<tr>
- <td><?php echo form_input(array('name' => $i.'[qty]', 'value' => $items['qty'], 'maxlength' => '3', 'size' => '5')); ?></td>
- <td>
- <?php echo $items['name']; ?>
+ <td><?php echo form_input(array('name' => $i.'[qty]', 'value' => $items['qty'], 'maxlength' => '3', 'size' => '5')); ?></td>
+ <td>
+ <?php echo $items['name']; ?>
<?php if ($this->cart->has_options($items['rowid']) == TRUE): ?>
@@ -170,9 +182,9 @@ helper </helpers/form_helper>`.
<?php endif; ?>
- </td>
- <td style="text-align:right"><?php echo $this->cart->format_number($items['price']); ?></td>
- <td style="text-align:right">$<?php echo $this->cart->format_number($items['subtotal']); ?></td>
+ </td>
+ <td style="text-align:right"><?php echo $this->cart->format_number($items['price']); ?></td>
+ <td style="text-align:right">$<?php echo $this->cart->format_number($items['subtotal']); ?></td>
</tr>
<?php $i++; ?>
@@ -180,9 +192,9 @@ helper </helpers/form_helper>`.
<?php endforeach; ?>
<tr>
- <td colspan="2"> </td>
- <td class="right"><strong>Total</strong></td>
- <td class="right">$<?php echo $this->cart->format_number($this->cart->total()); ?></td>
+ <td colspan="2"> </td>
+ <td class="right"><strong>Total</strong></td>
+ <td class="right">$<?php echo $this->cart->format_number($this->cart->total()); ?></td>
</tr>
</table>
@@ -193,8 +205,8 @@ Updating The Cart
=================
To update the information in your cart, you must pass an array
-containing the Row ID and quantity to the $this->cart->update()
-function:
+containing the Row ID and quantity to the ``$this->cart->update()``
+method.
.. note:: If the quantity is set to zero, the item will be removed from
the cart.
@@ -202,38 +214,52 @@ function:
::
$data = array(
- 'rowid' => 'b99ccdf16028f015540f341130b6d8ec',
- 'qty' => 3
- );
+ 'rowid' => 'b99ccdf16028f015540f341130b6d8ec',
+ 'qty' => 3
+ );
$this->cart->update($data);
// Or a multi-dimensional array
$data = array(
- array(
- 'rowid' => 'b99ccdf16028f015540f341130b6d8ec',
- 'qty' => 3
- ),
- array(
- 'rowid' => 'xw82g9q3r495893iajdh473990rikw23',
- 'qty' => 4
- ),
- array(
- 'rowid' => 'fh4kdkkkaoe30njgoe92rkdkkobec333',
- 'qty' => 2
- )
- );
+ array(
+ 'rowid' => 'b99ccdf16028f015540f341130b6d8ec',
+ 'qty' => 3
+ ),
+ array(
+ 'rowid' => 'xw82g9q3r495893iajdh473990rikw23',
+ 'qty' => 4
+ ),
+ array(
+ 'rowid' => 'fh4kdkkkaoe30njgoe92rkdkkobec333',
+ 'qty' => 2
+ )
+ );
+
+ $this->cart->update($data);
+
+You may also update any property you have previously defined when
+inserting the item such as options, price or other custom fields.
+
+::
+
+ $data = array(
+ 'rowid' => 'b99ccdf16028f015540f341130b6d8ec',
+ 'qty' => 1,
+ 'price' => 49.95,
+ 'coupon' => NULL
+ );
$this->cart->update($data);
What is a Row ID?
*****************
-The row ID is a unique identifier that is
-generated by the cart code when an item is added to the cart. The reason
-a unique ID is created is so that identical products with different
-options can be managed by the cart.
+The row ID is a unique identifier that is generated by the cart code
+when an item is added to the cart. The reason a unique ID is created
+is so that identical products with different options can be managed
+by the cart.
For example, let's say someone buys two identical t-shirts (same product
ID), but in different sizes. The product ID (and other attributes) will
@@ -247,9 +273,9 @@ In nearly all cases, updating the cart will be something the user does
via the "view cart" page, so as a developer, it is unlikely that you
will ever have to concern yourself with the "row ID", other than making
sure your "view cart" page contains this information in a hidden form
-field, and making sure it gets passed to the update function when the
-update form is submitted. Please examine the construction of the "view
-cart" page above for more information.
+field, and making sure it gets passed to the ``update()`` method when
+the update form is submitted. Please examine the construction of the
+"view cart" page above for more information.
***************
@@ -289,10 +315,10 @@ Class Reference
:returns: TRUE on success, FALSE on failure
:rtype: bool
- This method permits the quantity of a given item to be changed.
+ This method permits changing the properties of a given item.
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.
+ to the quantity before checkout. That array must contain the rowid
+ and qty for each item.
.. method:: remove($rowid)
@@ -347,7 +373,7 @@ Class Reference
Returns TRUE (boolean) if a particular row in the cart contains options.
This method is designed to be used in a loop with ``contents()``, since
- you must pass the rowid to this function, as shown in the Displaying
+ you must pass the rowid to this method, as shown in the Displaying
the Cart example above.
.. method:: product_options([$row_id = ''])