diff options
| author | Andrey Andreev <narf@devilix.net> | 2019-01-16 16:49:35 +0100 |
|---|---|---|
| committer | Andrey Andreev <narf@devilix.net> | 2019-01-16 16:49:35 +0100 |
| commit | c576995304fc3609cca0b7b92d1b2cd611ec82f5 (patch) | |
| tree | c8b9121cb295b56bbabe3aeaad0a3eb1f2d390bb /user_guide/libraries/cart.html | |
| parent | 4eaf80a6ec0b58a0adc95638153363e00ebf5378 (diff) | |
[ci skip] 3.1.10 release
Diffstat (limited to 'user_guide/libraries/cart.html')
| -rw-r--r-- | user_guide/libraries/cart.html | 1025 |
1 files changed, 1025 insertions, 0 deletions
diff --git a/user_guide/libraries/cart.html b/user_guide/libraries/cart.html new file mode 100644 index 000000000..4e53a9287 --- /dev/null +++ b/user_guide/libraries/cart.html @@ -0,0 +1,1025 @@ + + +<!DOCTYPE html> +<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]--> +<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]--> +<head> + <meta charset="utf-8"> + <meta name="viewport" content="width=device-width, initial-scale=1.0"> + + <title>Shopping Cart Class — CodeIgniter 3.1.10 documentation</title> + + + + + <link rel="shortcut icon" href="../_static/ci-icon.ico"/> + + + + <link href='https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic|Roboto+Slab:400,700|Inconsolata:400,700&subset=latin,cyrillic' rel='stylesheet' type='text/css'> + + + + + + + + + + <link rel="stylesheet" href="../_static/css/citheme.css" type="text/css" /> + + + + <link rel="index" title="Index" + href="../genindex.html"/> + <link rel="search" title="Search" href="../search.html"/> + <link rel="top" title="CodeIgniter 3.1.10 documentation" href="../index.html"/> + <link rel="up" title="Libraries" href="index.html"/> + <link rel="next" title="Config Class" href="config.html"/> + <link rel="prev" title="Calendaring Class" href="calendar.html"/> + + + <script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.6.2/modernizr.min.js"></script> + +</head> + +<body class="wy-body-for-nav" role="document"> + + <div id="nav"> + <div id="nav_inner"> + + + + <div id="pulldown-menu" class="ciNav"> + <ul> +<li class="toctree-l1"><a class="reference internal" href="../general/welcome.html">Welcome to CodeIgniter</a></li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../installation/index.html">Installation Instructions</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../installation/downloads.html">Downloading CodeIgniter</a></li> +<li class="toctree-l2"><a class="reference internal" 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href="../general/environments.html">Handling Multiple Environments</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/alternative_php.html">Alternate PHP Syntax for View Files</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/security.html">Security</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/styleguide.html">PHP Style Guide</a></li> +</ul> +</li> +</ul> +<ul class="current"> +<li class="toctree-l1 current"><a class="reference internal" href="index.html">Libraries</a><ul class="current"> +<li class="toctree-l2"><a class="reference internal" href="benchmark.html">Benchmarking Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="caching.html">Caching Driver</a></li> +<li class="toctree-l2"><a class="reference internal" href="calendar.html">Calendaring Class</a></li> +<li class="toctree-l2 current"><a class="current reference internal" href="#">Shopping Cart Class</a></li> 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+<li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li> +</ul> +</li> +</ul> + + + + </div> + + </nav> + + <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"> + + + <nav class="wy-nav-top" role="navigation" aria-label="top navigation"> + <i data-toggle="wy-nav-top" class="fa fa-bars"></i> + <a href="../index.html">CodeIgniter</a> + </nav> + + + + <div class="wy-nav-content"> + <div class="rst-content"> + <div role="navigation" aria-label="breadcrumbs navigation"> + <ul class="wy-breadcrumbs"> + <li><a href="../index.html">Docs</a> »</li> + + <li><a href="index.html">Libraries</a> »</li> + + <li>Shopping Cart Class</li> + <li class="wy-breadcrumbs-aside"> + + </li> + <div style="float:right;margin-left:5px;" id="closeMe"> + <img title="Classic Layout" alt="classic layout" src="data:image/gif;base64,R0lGODlhFAAUAJEAAAAAADMzM////wAAACH5BAUUAAIALAAAAAAUABQAAAImlI+py+0PU5gRBRDM3DxbWoXis42X13USOLauUIqnlsaH/eY6UwAAOw==" /> + </div> + </ul> + <hr/> +</div> + <div role="main" class="document"> + + <div class="section" id="shopping-cart-class"> +<h1>Shopping Cart Class<a class="headerlink" href="#shopping-cart-class" title="Permalink to this headline">¶</a></h1> +<p>The Cart Class permits items to be added to a session that stays active +while a user is browsing your site. These items can be retrieved and +displayed in a standard “shopping cart” format, allowing the user to +update the quantity or remove items from the cart.</p> +<div class="admonition important"> +<p class="first admonition-title">Important</p> +<p class="last">The Cart library is DEPRECATED and should not be used. +It is currently only kept for backwards compatibility.</p> +</div> +<p>Please note that the Cart Class ONLY provides the core “cart” +functionality. It does not provide shipping, credit card authorization, +or other processing components.</p> +<div class="contents local topic" id="contents"> +<ul class="simple"> +<li><a class="reference internal" href="#using-the-cart-class" id="id1">Using the Cart Class</a><ul> +<li><a class="reference internal" href="#initializing-the-shopping-cart-class" id="id2">Initializing the Shopping Cart Class</a></li> +<li><a class="reference internal" href="#adding-an-item-to-the-cart" id="id3">Adding an Item to The Cart</a></li> +<li><a class="reference internal" href="#adding-multiple-items-to-the-cart" id="id4">Adding Multiple Items to The Cart</a></li> +<li><a class="reference internal" href="#displaying-the-cart" id="id5">Displaying the Cart</a></li> +<li><a class="reference internal" href="#updating-the-cart" id="id6">Updating The Cart</a><ul> +<li><a class="reference internal" href="#what-is-a-row-id" id="id7">What is a Row ID?</a></li> +</ul> +</li> +</ul> +</li> +<li><a class="reference internal" href="#class-reference" id="id8">Class Reference</a></li> +</ul> +</div> +<div class="custom-index container"></div><div class="section" id="using-the-cart-class"> +<h2><a class="toc-backref" href="#id1">Using the Cart Class</a><a class="headerlink" href="#using-the-cart-class" title="Permalink to this headline">¶</a></h2> +<div class="section" id="initializing-the-shopping-cart-class"> +<h3><a class="toc-backref" href="#id2">Initializing the Shopping Cart Class</a><a class="headerlink" href="#initializing-the-shopping-cart-class" title="Permalink to this headline">¶</a></h3> +<div class="admonition important"> +<p class="first admonition-title">Important</p> +<p class="last">The Cart class utilizes CodeIgniter’s <a class="reference internal" href="sessions.html"><span class="doc">Session +Class</span></a> to save the cart information to a database, so +before using the Cart class you must set up a database table as +indicated in the <a class="reference internal" href="sessions.html"><span class="doc">Session Documentation</span></a>, and set the +session preferences in your application/config/config.php file to +utilize a database.</p> +</div> +<p>To initialize the Shopping Cart Class in your controller constructor, +use the <code class="docutils literal"><span class="pre">$this->load->library()</span></code> method:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">library</span><span class="p">(</span><span class="s1">'cart'</span><span class="p">);</span> +</pre></div> +</div> +<p>Once loaded, the Cart object will be available using:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">cart</span> +</pre></div> +</div> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">The Cart Class will load and initialize the Session Class +automatically, so unless you are using sessions elsewhere in your +application, you do not need to load the Session class.</p> +</div> +</div> +<div class="section" id="adding-an-item-to-the-cart"> +<h3><a class="toc-backref" href="#id3">Adding an Item to The Cart</a><a class="headerlink" href="#adding-an-item-to-the-cart" title="Permalink to this headline">¶</a></h3> +<p>To add an item to the shopping cart, simply pass an array with the +product information to the <code class="docutils literal"><span class="pre">$this->cart->insert()</span></code> method, as shown +below:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span> + <span class="s1">'id'</span> <span class="o">=></span> <span class="s1">'sku_123ABC'</span><span class="p">,</span> + <span class="s1">'qty'</span> <span class="o">=></span> <span class="mi">1</span><span class="p">,</span> + <span class="s1">'price'</span> <span class="o">=></span> <span class="mf">39.95</span><span class="p">,</span> + <span class="s1">'name'</span> <span class="o">=></span> <span class="s1">'T-Shirt'</span><span class="p">,</span> + <span class="s1">'options'</span> <span class="o">=></span> <span class="k">array</span><span class="p">(</span><span class="s1">'Size'</span> <span class="o">=></span> <span class="s1">'L'</span><span class="p">,</span> <span class="s1">'Color'</span> <span class="o">=></span> <span class="s1">'Red'</span><span class="p">)</span> +<span class="p">);</span> + +<span class="nv">$this</span><span class="o">-></span><span class="na">cart</span><span class="o">-></span><span class="na">insert</span><span class="p">(</span><span class="nv">$data</span><span class="p">);</span> +</pre></div> +</div> +<div class="admonition important"> +<p class="first admonition-title">Important</p> +<p class="last">The first four array indexes above (id, qty, price, and +name) are <strong>required</strong>. If you omit any of them the data will not be +saved to the cart. The fifth index (options) is optional. It is intended +to be used in cases where your product has options associated with it. +Use an array for options, as shown above.</p> +</div> +<p>The five reserved indexes are:</p> +<ul class="simple"> +<li><strong>id</strong> - Each product in your store must have a unique identifier. +Typically this will be an “sku” or other such identifier.</li> +<li><strong>qty</strong> - The quantity being purchased.</li> +<li><strong>price</strong> - The price of the item.</li> +<li><strong>name</strong> - The name of the item.</li> +<li><strong>options</strong> - Any additional attributes that are needed to identify +the product. These must be passed via an array.</li> +</ul> +<p>In addition to the five indexes above, there are two reserved words: +rowid and subtotal. These are used internally by the Cart class, so +please do NOT use those words as index names when inserting data into +the cart.</p> +<p>Your array may contain additional data. Anything you include in your +array will be stored in the session. However, it is best to standardize +your data among all your products in order to make displaying the +information in a table easier.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span> + <span class="s1">'id'</span> <span class="o">=></span> <span class="s1">'sku_123ABC'</span><span class="p">,</span> + <span class="s1">'qty'</span> <span class="o">=></span> <span class="mi">1</span><span class="p">,</span> + <span class="s1">'price'</span> <span class="o">=></span> <span class="mf">39.95</span><span class="p">,</span> + <span class="s1">'name'</span> <span class="o">=></span> <span class="s1">'T-Shirt'</span><span class="p">,</span> + <span class="s1">'coupon'</span> <span class="o">=></span> <span class="s1">'XMAS-50OFF'</span> +<span class="p">);</span> + +<span class="nv">$this</span><span class="o">-></span><span class="na">cart</span><span class="o">-></span><span class="na">insert</span><span class="p">(</span><span class="nv">$data</span><span class="p">);</span> +</pre></div> +</div> +<p>The <code class="docutils literal"><span class="pre">insert()</span></code> method will return the $rowid if you successfully insert a +single item.</p> +</div> +<div class="section" id="adding-multiple-items-to-the-cart"> +<h3><a class="toc-backref" href="#id4">Adding Multiple Items to The Cart</a><a class="headerlink" href="#adding-multiple-items-to-the-cart" title="Permalink to this headline">¶</a></h3> +<p>By using a multi-dimensional array, as shown below, it is possible to +add multiple products to the cart in one action. This is useful in cases +where you wish to allow people to select from among several items on the +same page.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span> + <span class="k">array</span><span class="p">(</span> + <span class="s1">'id'</span> <span class="o">=></span> <span class="s1">'sku_123ABC'</span><span class="p">,</span> + <span class="s1">'qty'</span> <span class="o">=></span> <span class="mi">1</span><span class="p">,</span> + <span class="s1">'price'</span> <span class="o">=></span> <span class="mf">39.95</span><span class="p">,</span> + <span class="s1">'name'</span> <span class="o">=></span> <span class="s1">'T-Shirt'</span><span class="p">,</span> + <span class="s1">'options'</span> <span class="o">=></span> <span class="k">array</span><span class="p">(</span><span class="s1">'Size'</span> <span class="o">=></span> <span class="s1">'L'</span><span class="p">,</span> <span class="s1">'Color'</span> <span class="o">=></span> <span class="s1">'Red'</span><span class="p">)</span> + <span class="p">),</span> + <span class="k">array</span><span class="p">(</span> + <span class="s1">'id'</span> <span class="o">=></span> <span class="s1">'sku_567ZYX'</span><span class="p">,</span> + <span class="s1">'qty'</span> <span class="o">=></span> <span class="mi">1</span><span class="p">,</span> + <span class="s1">'price'</span> <span class="o">=></span> <span class="mf">9.95</span><span class="p">,</span> + <span class="s1">'name'</span> <span class="o">=></span> <span class="s1">'Coffee Mug'</span> + <span class="p">),</span> + <span class="k">array</span><span class="p">(</span> + <span class="s1">'id'</span> <span class="o">=></span> <span class="s1">'sku_965QRS'</span><span class="p">,</span> + <span class="s1">'qty'</span> <span class="o">=></span> <span class="mi">1</span><span class="p">,</span> + <span class="s1">'price'</span> <span class="o">=></span> <span class="mf">29.95</span><span class="p">,</span> + <span class="s1">'name'</span> <span class="o">=></span> <span class="s1">'Shot Glass'</span> + <span class="p">)</span> +<span class="p">);</span> + +<span class="nv">$this</span><span class="o">-></span><span class="na">cart</span><span class="o">-></span><span class="na">insert</span><span class="p">(</span><span class="nv">$data</span><span class="p">);</span> +</pre></div> +</div> +</div> +<div class="section" id="displaying-the-cart"> +<h3><a class="toc-backref" href="#id5">Displaying the Cart</a><a class="headerlink" href="#displaying-the-cart" title="Permalink to this headline">¶</a></h3> +<p>To display the cart you will create a <a class="reference internal" href="../general/views.html"><span class="doc">view +file</span></a> with code similar to the one shown below.</p> +<p>Please note that this example uses the <a class="reference internal" href="../helpers/form_helper.html"><span class="doc">form +helper</span></a>.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><?</span><span class="nx">php</span> <span class="k">echo</span> <span class="nx">form_open</span><span class="p">(</span><span class="s1">'path/to/controller/update/method'</span><span class="p">);</span> <span class="cp">?></span> + +<span class="p"><</span><span class="nt">table</span> <span class="na">cellpadding</span><span class="o">=</span><span class="s">"6"</span> <span class="na">cellspacing</span><span class="o">=</span><span class="s">"1"</span> <span class="na">style</span><span class="o">=</span><span class="s">"width:100%"</span> <span class="na">border</span><span class="o">=</span><span class="s">"0"</span><span class="p">></span> + +<span class="p"><</span><span class="nt">tr</span><span class="p">></span> + <span class="p"><</span><span class="nt">th</span><span class="p">></span>QTY<span class="p"></</span><span class="nt">th</span><span class="p">></span> + <span class="p"><</span><span class="nt">th</span><span class="p">></span>Item Description<span class="p"></</span><span class="nt">th</span><span class="p">></span> + <span class="p"><</span><span class="nt">th</span> <span class="na">style</span><span class="o">=</span><span class="s">"text-align:right"</span><span class="p">></span>Item Price<span class="p"></</span><span class="nt">th</span><span class="p">></span> + <span class="p"><</span><span class="nt">th</span> <span class="na">style</span><span class="o">=</span><span class="s">"text-align:right"</span><span class="p">></span>Sub-Total<span class="p"></</span><span class="nt">th</span><span class="p">></span> +<span class="p"></</span><span class="nt">tr</span><span class="p">></span> + +<span class="cp"><?php</span> <span class="nv">$i</span> <span class="o">=</span> <span class="mi">1</span><span class="p">;</span> <span class="cp">?></span> + +<span class="cp"><?php</span> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-></span><span class="na">cart</span><span class="o">-></span><span class="na">contents</span><span class="p">()</span> <span class="k">as</span> <span class="nv">$items</span><span class="p">)</span><span class="o">:</span> <span class="cp">?></span> + + <span class="cp"><?php</span> <span class="k">echo</span> <span class="nx">form_hidden</span><span class="p">(</span><span class="nv">$i</span><span class="o">.</span><span class="s1">'[rowid]'</span><span class="p">,</span> <span class="nv">$items</span><span class="p">[</span><span class="s1">'rowid'</span><span class="p">]);</span> <span class="cp">?></span> + + <span class="p"><</span><span class="nt">tr</span><span class="p">></span> + <span class="p"><</span><span class="nt">td</span><span class="p">></span><span class="cp"><?php</span> <span class="k">echo</span> <span class="nx">form_input</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'name'</span> <span class="o">=></span> <span class="nv">$i</span><span class="o">.</span><span class="s1">'[qty]'</span><span class="p">,</span> <span class="s1">'value'</span> <span class="o">=></span> <span class="nv">$items</span><span class="p">[</span><span class="s1">'qty'</span><span class="p">],</span> <span class="s1">'maxlength'</span> <span class="o">=></span> <span class="s1">'3'</span><span class="p">,</span> <span class="s1">'size'</span> <span class="o">=></span> <span class="s1">'5'</span><span class="p">));</span> <span class="cp">?></span><span class="p"></</span><span class="nt">td</span><span class="p">></span> + <span class="p"><</span><span class="nt">td</span><span class="p">></span> + <span class="cp"><?php</span> <span class="k">echo</span> <span class="nv">$items</span><span class="p">[</span><span class="s1">'name'</span><span class="p">];</span> <span class="cp">?></span> + + <span class="cp"><?php</span> <span class="k">if</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-></span><span class="na">cart</span><span class="o">-></span><span class="na">has_options</span><span class="p">(</span><span class="nv">$items</span><span class="p">[</span><span class="s1">'rowid'</span><span class="p">])</span> <span class="o">==</span> <span class="k">TRUE</span><span class="p">)</span><span class="o">:</span> <span class="cp">?></span> + + <span class="p"><</span><span class="nt">p</span><span class="p">></span> + <span class="cp"><?php</span> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$this</span><span class="o">-></span><span class="na">cart</span><span class="o">-></span><span class="na">product_options</span><span class="p">(</span><span class="nv">$items</span><span class="p">[</span><span class="s1">'rowid'</span><span class="p">])</span> <span class="k">as</span> <span class="nv">$option_name</span> <span class="o">=></span> <span class="nv">$option_value</span><span class="p">)</span><span class="o">:</span> <span class="cp">?></span> + + <span class="p"><</span><span class="nt">strong</span><span class="p">></span><span class="cp"><?php</span> <span class="k">echo</span> <span class="nv">$option_name</span><span class="p">;</span> <span class="cp">?></span>:<span class="p"></</span><span class="nt">strong</span><span class="p">></span> <span class="cp"><?php</span> <span class="k">echo</span> <span class="nv">$option_value</span><span class="p">;</span> <span class="cp">?></span><span class="p"><</span><span class="nt">br</span> <span class="p">/></span> + + <span class="cp"><?php</span> <span class="k">endforeach</span><span class="p">;</span> <span class="cp">?></span> + <span class="p"></</span><span class="nt">p</span><span class="p">></span> + + <span class="cp"><?php</span> <span class="k">endif</span><span class="p">;</span> <span class="cp">?></span> + + <span class="p"></</span><span class="nt">td</span><span class="p">></span> + <span class="p"><</span><span class="nt">td</span> <span class="na">style</span><span class="o">=</span><span class="s">"text-align:right"</span><span class="p">></span><span class="cp"><?php</span> <span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">cart</span><span class="o">-></span><span class="na">format_number</span><span class="p">(</span><span class="nv">$items</span><span class="p">[</span><span class="s1">'price'</span><span class="p">]);</span> <span class="cp">?></span><span class="p"></</span><span class="nt">td</span><span class="p">></span> + <span class="p"><</span><span class="nt">td</span> <span class="na">style</span><span class="o">=</span><span class="s">"text-align:right"</span><span class="p">></span>$<span class="cp"><?php</span> <span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">cart</span><span class="o">-></span><span class="na">format_number</span><span class="p">(</span><span class="nv">$items</span><span class="p">[</span><span class="s1">'subtotal'</span><span class="p">]);</span> <span class="cp">?></span><span class="p"></</span><span class="nt">td</span><span class="p">></span> + <span class="p"></</span><span class="nt">tr</span><span class="p">></span> + +<span class="cp"><?php</span> <span class="nv">$i</span><span class="o">++</span><span class="p">;</span> <span class="cp">?></span> + +<span class="cp"><?php</span> <span class="k">endforeach</span><span class="p">;</span> <span class="cp">?></span> + +<span class="p"><</span><span class="nt">tr</span><span class="p">></span> + <span class="p"><</span><span class="nt">td</span> <span class="na">colspan</span><span class="o">=</span><span class="s">"2"</span><span class="p">></span> <span class="p"></</span><span class="nt">td</span><span class="p">></span> + <span class="p"><</span><span class="nt">td</span> <span class="na">class</span><span class="o">=</span><span class="s">"right"</span><span class="p">><</span><span class="nt">strong</span><span class="p">></span>Total<span class="p"></</span><span class="nt">strong</span><span class="p">></</span><span class="nt">td</span><span class="p">></span> + <span class="p"><</span><span class="nt">td</span> <span class="na">class</span><span class="o">=</span><span class="s">"right"</span><span class="p">></span>$<span class="cp"><?php</span> <span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">cart</span><span class="o">-></span><span class="na">format_number</span><span class="p">(</span><span class="nv">$this</span><span class="o">-></span><span class="na">cart</span><span class="o">-></span><span class="na">total</span><span class="p">());</span> <span class="cp">?></span><span class="p"></</span><span class="nt">td</span><span class="p">></span> +<span class="p"></</span><span class="nt">tr</span><span class="p">></span> + +<span class="p"></</span><span class="nt">table</span><span class="p">></span> + +<span class="p"><</span><span class="nt">p</span><span class="p">></span><span class="cp"><?php</span> <span class="k">echo</span> <span class="nx">form_submit</span><span class="p">(</span><span class="s1">''</span><span class="p">,</span> <span class="s1">'Update your Cart'</span><span class="p">);</span> <span class="cp">?></span><span class="p"></</span><span class="nt">p</span><span class="p">></span> +</pre></div> +</div> +</div> +<div class="section" id="updating-the-cart"> +<h3><a class="toc-backref" href="#id6">Updating The Cart</a><a class="headerlink" href="#updating-the-cart" title="Permalink to this headline">¶</a></h3> +<p>To update the information in your cart, you must pass an array +containing the Row ID and one or more pre-defined properties to the +<code class="docutils literal"><span class="pre">$this->cart->update()</span></code> method.</p> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">If the quantity is set to zero, the item will be removed from +the cart.</p> +</div> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span> + <span class="s1">'rowid'</span> <span class="o">=></span> <span class="s1">'b99ccdf16028f015540f341130b6d8ec'</span><span class="p">,</span> + <span class="s1">'qty'</span> <span class="o">=></span> <span class="mi">3</span> +<span class="p">);</span> + +<span class="nv">$this</span><span class="o">-></span><span class="na">cart</span><span class="o">-></span><span class="na">update</span><span class="p">(</span><span class="nv">$data</span><span class="p">);</span> + +<span class="c1">// Or a multi-dimensional array</span> + +<span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span> + <span class="k">array</span><span class="p">(</span> + <span class="s1">'rowid'</span> <span class="o">=></span> <span class="s1">'b99ccdf16028f015540f341130b6d8ec'</span><span class="p">,</span> + <span class="s1">'qty'</span> <span class="o">=></span> <span class="mi">3</span> + <span class="p">),</span> + <span class="k">array</span><span class="p">(</span> + <span class="s1">'rowid'</span> <span class="o">=></span> <span class="s1">'xw82g9q3r495893iajdh473990rikw23'</span><span class="p">,</span> + <span class="s1">'qty'</span> <span class="o">=></span> <span class="mi">4</span> + <span class="p">),</span> + <span class="k">array</span><span class="p">(</span> + <span class="s1">'rowid'</span> <span class="o">=></span> <span class="s1">'fh4kdkkkaoe30njgoe92rkdkkobec333'</span><span class="p">,</span> + <span class="s1">'qty'</span> <span class="o">=></span> <span class="mi">2</span> + <span class="p">)</span> +<span class="p">);</span> + +<span class="nv">$this</span><span class="o">-></span><span class="na">cart</span><span class="o">-></span><span class="na">update</span><span class="p">(</span><span class="nv">$data</span><span class="p">);</span> +</pre></div> +</div> +<p>You may also update any property you have previously defined when +inserting the item such as options, price or other custom fields.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span> + <span class="s1">'rowid'</span> <span class="o">=></span> <span class="s1">'b99ccdf16028f015540f341130b6d8ec'</span><span class="p">,</span> + <span class="s1">'qty'</span> <span class="o">=></span> <span class="mi">1</span><span class="p">,</span> + <span class="s1">'price'</span> <span class="o">=></span> <span class="mf">49.95</span><span class="p">,</span> + <span class="s1">'coupon'</span> <span class="o">=></span> <span class="k">NULL</span> +<span class="p">);</span> + +<span class="nv">$this</span><span class="o">-></span><span class="na">cart</span><span class="o">-></span><span class="na">update</span><span class="p">(</span><span class="nv">$data</span><span class="p">);</span> +</pre></div> +</div> +<div class="section" id="what-is-a-row-id"> +<h4><a class="toc-backref" href="#id7">What is a Row ID?</a><a class="headerlink" href="#what-is-a-row-id" title="Permalink to this headline">¶</a></h4> +<p>The row ID is a unique identifier that is generated by the cart code +when an item is added to the cart. The reason a unique ID is created +is so that identical products with different options can be managed +by the cart.</p> +<p>For example, let’s say someone buys two identical t-shirts (same product +ID), but in different sizes. The product ID (and other attributes) will +be identical for both sizes because it’s the same shirt. The only +difference will be the size. The cart must therefore have a means of +identifying this difference so that the two sizes of shirts can be +managed independently. It does so by creating a unique “row ID” based on +the product ID and any options associated with it.</p> +<p>In nearly all cases, updating the cart will be something the user does +via the “view cart” page, so as a developer, it is unlikely that you +will ever have to concern yourself with the “row ID”, other than making +sure your “view cart” page contains this information in a hidden form +field, and making sure it gets passed to the <code class="docutils literal"><span class="pre">update()</span></code> method when +the update form is submitted. Please examine the construction of the +“view cart” page above for more information.</p> +</div> +</div> +</div> +<div class="section" id="class-reference"> +<h2><a class="toc-backref" href="#id8">Class Reference</a><a class="headerlink" href="#class-reference" title="Permalink to this headline">¶</a></h2> +<dl class="class"> +<dt id="CI_Cart"> +<em class="property">class </em><code class="descname">CI_Cart</code><a class="headerlink" href="#CI_Cart" title="Permalink to this definition">¶</a></dt> +<dd><dl class="attribute"> +<dt> +<code class="descname">$product_id_rules = '.a-z0-9_-'</code></dt> +<dd><p>These are the regular expression rules that we use to validate the product +ID - alpha-numeric, dashes, underscores, or periods by default</p> +</dd></dl> + +<dl class="attribute"> +<dt> +<code class="descname">$product_name_rules = 'w -.:'</code></dt> +<dd><p>These are the regular expression rules that we use to validate the product ID and product name - alpha-numeric, dashes, underscores, colons or periods by +default</p> +</dd></dl> + +<dl class="attribute"> +<dt> +<code class="descname">$product_name_safe = TRUE</code></dt> +<dd><p>Whether or not to only allow safe product names. Default TRUE.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Cart::insert"> +<code class="descname">insert</code><span class="sig-paren">(</span><span class="optional">[</span><em>$items = array()</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::insert" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$items</strong> (<em>array</em>) – Items to insert into the cart</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE on success, FALSE on failure</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p> +</td> +</tr> +</tbody> +</table> +<p>Insert items into the cart and save it to the session table. Returns TRUE +on success and FALSE on failure.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Cart::update"> +<code class="descname">update</code><span class="sig-paren">(</span><span class="optional">[</span><em>$items = array()</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::update" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$items</strong> (<em>array</em>) – Items to update in the cart</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE on success, FALSE on failure</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p> +</td> +</tr> +</tbody> +</table> +<p>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 rowid +for each item.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Cart::remove"> +<code class="descname">remove</code><span class="sig-paren">(</span><em>$rowid</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::remove" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$rowid</strong> (<em>int</em>) – ID of the item to remove from the cart</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE on success, FALSE on failure</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p> +</td> +</tr> +</tbody> +</table> +<p>Allows you to remove an item from the shopping cart by passing it the +<code class="docutils literal"><span class="pre">$rowid</span></code>.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Cart::total"> +<code class="descname">total</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::total" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Total amount</td> +</tr> +<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">int</td> +</tr> +</tbody> +</table> +<p>Displays the total amount in the cart.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Cart::total_items"> +<code class="descname">total_items</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::total_items" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Total amount of items in the cart</td> +</tr> +<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">int</td> +</tr> +</tbody> +</table> +<p>Displays the total number of items in the cart.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Cart::contents"> +<code class="descname">contents</code><span class="sig-paren">(</span><span class="optional">[</span><em>$newest_first = FALSE</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::contents" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$newest_first</strong> (<em>bool</em>) – Whether to order the array with newest items first</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">An array of cart contents</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p> +</td> +</tr> +</tbody> +</table> +<p>Returns an array containing everything in the cart. You can sort the +order by which the array is returned by passing it TRUE where the contents +will be sorted from newest to oldest, otherwise it is sorted from oldest +to newest.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Cart::get_item"> +<code class="descname">get_item</code><span class="sig-paren">(</span><em>$row_id</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::get_item" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$row_id</strong> (<em>int</em>) – Row ID to retrieve</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Array of item data</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p> +</td> +</tr> +</tbody> +</table> +<p>Returns an array containing data for the item matching the specified row +ID, or FALSE if no such item exists.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Cart::has_options"> +<code class="descname">has_options</code><span class="sig-paren">(</span><em>$row_id = ''</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::has_options" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$row_id</strong> (<em>int</em>) – Row ID to inspect</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE if options exist, FALSE otherwise</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p> +</td> +</tr> +</tbody> +</table> +<p>Returns TRUE (boolean) if a particular row in the cart contains options. +This method is designed to be used in a loop with <code class="docutils literal"><span class="pre">contents()</span></code>, since +you must pass the rowid to this method, as shown in the Displaying +the Cart example above.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Cart::product_options"> +<code class="descname">product_options</code><span class="sig-paren">(</span><span class="optional">[</span><em>$row_id = ''</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::product_options" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$row_id</strong> (<em>int</em>) – Row ID</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Array of product options</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p> +</td> +</tr> +</tbody> +</table> +<p>Returns an array of options for a particular product. This method is +designed to be used in a loop with <code class="docutils literal"><span class="pre">contents()</span></code>, since you +must pass the rowid to this method, as shown in the Displaying the +Cart example above.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Cart::destroy"> +<code class="descname">destroy</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Cart::destroy" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body">void</td> +</tr> +</tbody> +</table> +<p>Permits you to destroy the cart. This method will likely be called +when you are finished processing the customer’s order.</p> +</dd></dl> + +</dd></dl> + +</div> +</div> + + + </div> + <footer> + + <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> + + <a href="config.html" class="btn btn-neutral float-right" title="Config Class">Next <span class="fa fa-arrow-circle-right"></span></a> + + + <a href="calendar.html" class="btn btn-neutral" title="Calendaring Class"><span class="fa fa-arrow-circle-left"></span> Previous</a> + + </div> + + + <hr/> + + <div role="contentinfo"> + <p> + © Copyright 2014 - 2019, British Columbia Institute of Technology. + Last updated on Jan 16, 2019. + </p> + </div> + + Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. + +</footer> + </div> + </div> + + </section> + + </div> + + + + + + <script type="text/javascript"> + var DOCUMENTATION_OPTIONS = { + URL_ROOT:'../', + VERSION:'3.1.10', + COLLAPSE_INDEX:false, + FILE_SUFFIX:'.html', + HAS_SOURCE: false + }; + </script> + <script type="text/javascript" src="../_static/jquery.js"></script> + <script type="text/javascript" src="../_static/underscore.js"></script> + <script type="text/javascript" src="../_static/doctools.js"></script> + + + + + + <script type="text/javascript" src="../_static/js/theme.js"></script> + + + + + <script type="text/javascript"> + jQuery(function () { + SphinxRtdTheme.StickyNav.enable(); + }); + </script> + + +</body> +</html>
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