You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
686 lines
50 KiB
686 lines
50 KiB
|
|
|
|
<!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>Models — CodeIgniter 3.1.4 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="top" title="CodeIgniter 3.1.4 documentation" href="../index.html"/>
|
|
<link rel="up" title="General Topics" href="index.html"/>
|
|
<link rel="next" title="Helper Functions" href="helpers.html"/>
|
|
<link rel="prev" title="Views" href="views.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="welcome.html">Welcome to CodeIgniter</a><ul class="simple">
|
|
</ul>
|
|
</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" href="../installation/index.html">Installation Instructions</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../installation/upgrading.html">Upgrading From a Previous Version</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../installation/troubleshooting.html">Troubleshooting</a></li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="../overview/index.html">CodeIgniter Overview</a><ul>
|
|
<li class="toctree-l2"><a class="reference internal" href="../overview/getting_started.html">Getting Started</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../overview/at_a_glance.html">CodeIgniter at a Glance</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../overview/features.html">Supported Features</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../overview/appflow.html">Application Flow Chart</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../overview/mvc.html">Model-View-Controller</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../overview/goals.html">Architectural Goals</a></li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="../tutorial/index.html">Tutorial</a><ul>
|
|
<li class="toctree-l2"><a class="reference internal" href="../tutorial/static_pages.html">Static pages</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../tutorial/news_section.html">News section</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../tutorial/create_news_items.html">Create news items</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../tutorial/conclusion.html">Conclusion</a></li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="../contributing/index.html">Contributing to CodeIgniter</a><ul>
|
|
<li class="toctree-l2"><a class="reference internal" href="../documentation/index.html">Writing CodeIgniter Documentation</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../DCO.html">Developer’s Certificate of Origin 1.1</a></li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
<ul class="current">
|
|
<li class="toctree-l1 current"><a class="reference internal" href="index.html">General Topics</a><ul class="current">
|
|
<li class="toctree-l2"><a class="reference internal" href="urls.html">CodeIgniter URLs</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="controllers.html">Controllers</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="reserved_names.html">Reserved Names</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="views.html">Views</a></li>
|
|
<li class="toctree-l2 current"><a class="current reference internal" href="">Models</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="helpers.html">Helpers</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="libraries.html">Using CodeIgniter Libraries</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="creating_libraries.html">Creating Libraries</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="drivers.html">Using CodeIgniter Drivers</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="creating_drivers.html">Creating Drivers</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="core_classes.html">Creating Core System Classes</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="ancillary_classes.html">Creating Ancillary Classes</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="hooks.html">Hooks - Extending the Framework Core</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="autoloader.html">Auto-loading Resources</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="common_functions.html">Common Functions</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="compatibility_functions.html">Compatibility Functions</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="routing.html">URI Routing</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="errors.html">Error Handling</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="caching.html">Caching</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="profiling.html">Profiling Your Application</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="cli.html">Running via the CLI</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="managing_apps.html">Managing your Applications</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="environments.html">Handling Multiple Environments</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="alternative_php.html">Alternate PHP Syntax for View Files</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="security.html">Security</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="styleguide.html">PHP Style Guide</a></li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="../libraries/index.html">Libraries</a><ul>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/benchmark.html">Benchmarking Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/caching.html">Caching Driver</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/calendar.html">Calendaring Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/cart.html">Shopping Cart Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/config.html">Config Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/email.html">Email Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/encrypt.html">Encrypt Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/encryption.html">Encryption Library</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/file_uploading.html">File Uploading Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/form_validation.html">Form Validation</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/ftp.html">FTP Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/image_lib.html">Image Manipulation Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/input.html">Input Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/javascript.html">Javascript Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/language.html">Language Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/loader.html">Loader Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/migration.html">Migrations Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/output.html">Output Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/pagination.html">Pagination Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/parser.html">Template Parser Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/security.html">Security Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/sessions.html">Session Library</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/table.html">HTML Table Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/trackback.html">Trackback Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/typography.html">Typography Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/unit_testing.html">Unit Testing Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/uri.html">URI Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/user_agent.html">User Agent Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/xmlrpc.html">XML-RPC and XML-RPC Server Classes</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/zip.html">Zip Encoding Class</a></li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/caching.html">Query Caching</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/forge.html">Database Manipulation with Database Forge</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/db_driver_reference.html">Database Driver Reference</a></li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/captcha_helper.html">CAPTCHA Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/directory_helper.html">Directory Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/download_helper.html">Download Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/email_helper.html">Email Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/file_helper.html">File Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/language_helper.html">Language Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/path_helper.html">Path Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/smiley_helper.html">Smiley Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/string_helper.html">String Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/typography_helper.html">Typography Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
</div>
|
|
<div id="nav2">
|
|
<a href="#" id="openToc">
|
|
<img src="data:image/jpeg;base64,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" title="Toggle Table of Contents" alt="Toggle Table of Contents" />
|
|
</a>
|
|
</div>
|
|
|
|
<div class="wy-grid-for-nav">
|
|
|
|
|
|
<nav data-toggle="wy-nav-shift" class="wy-nav-side">
|
|
<div class="wy-side-nav-search">
|
|
|
|
<a href="../index.html" class="fa fa-home"> CodeIgniter</a>
|
|
|
|
|
|
<div role="search">
|
|
<form id="rtd-search-form" class="wy-form" action="../search.html" method="get">
|
|
<input type="text" name="q" placeholder="Search docs" />
|
|
<input type="hidden" name="check_keywords" value="yes" />
|
|
<input type="hidden" name="area" value="default" />
|
|
</form>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
|
|
|
|
|
|
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="welcome.html">Welcome to CodeIgniter</a><ul class="simple">
|
|
</ul>
|
|
</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" href="../installation/index.html">Installation Instructions</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../installation/upgrading.html">Upgrading From a Previous Version</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../installation/troubleshooting.html">Troubleshooting</a></li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="../overview/index.html">CodeIgniter Overview</a><ul>
|
|
<li class="toctree-l2"><a class="reference internal" href="../overview/getting_started.html">Getting Started</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../overview/at_a_glance.html">CodeIgniter at a Glance</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../overview/features.html">Supported Features</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../overview/appflow.html">Application Flow Chart</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../overview/mvc.html">Model-View-Controller</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../overview/goals.html">Architectural Goals</a></li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="../tutorial/index.html">Tutorial</a><ul>
|
|
<li class="toctree-l2"><a class="reference internal" href="../tutorial/static_pages.html">Static pages</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../tutorial/news_section.html">News section</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../tutorial/create_news_items.html">Create news items</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../tutorial/conclusion.html">Conclusion</a></li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="../contributing/index.html">Contributing to CodeIgniter</a><ul>
|
|
<li class="toctree-l2"><a class="reference internal" href="../documentation/index.html">Writing CodeIgniter Documentation</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../DCO.html">Developer’s Certificate of Origin 1.1</a></li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
<ul class="current">
|
|
<li class="toctree-l1 current"><a class="reference internal" href="index.html">General Topics</a><ul class="current">
|
|
<li class="toctree-l2"><a class="reference internal" href="urls.html">CodeIgniter URLs</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="controllers.html">Controllers</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="reserved_names.html">Reserved Names</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="views.html">Views</a></li>
|
|
<li class="toctree-l2 current"><a class="current reference internal" href="">Models</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="helpers.html">Helpers</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="libraries.html">Using CodeIgniter Libraries</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="creating_libraries.html">Creating Libraries</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="drivers.html">Using CodeIgniter Drivers</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="creating_drivers.html">Creating Drivers</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="core_classes.html">Creating Core System Classes</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="ancillary_classes.html">Creating Ancillary Classes</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="hooks.html">Hooks - Extending the Framework Core</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="autoloader.html">Auto-loading Resources</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="common_functions.html">Common Functions</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="compatibility_functions.html">Compatibility Functions</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="routing.html">URI Routing</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="errors.html">Error Handling</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="caching.html">Caching</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="profiling.html">Profiling Your Application</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="cli.html">Running via the CLI</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="managing_apps.html">Managing your Applications</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="environments.html">Handling Multiple Environments</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="alternative_php.html">Alternate PHP Syntax for View Files</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="security.html">Security</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="styleguide.html">PHP Style Guide</a></li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="../libraries/index.html">Libraries</a><ul>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/benchmark.html">Benchmarking Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/caching.html">Caching Driver</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/calendar.html">Calendaring Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/cart.html">Shopping Cart Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/config.html">Config Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/email.html">Email Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/encrypt.html">Encrypt Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/encryption.html">Encryption Library</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/file_uploading.html">File Uploading Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/form_validation.html">Form Validation</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/ftp.html">FTP Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/image_lib.html">Image Manipulation Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/input.html">Input Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/javascript.html">Javascript Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/language.html">Language Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/loader.html">Loader Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/migration.html">Migrations Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/output.html">Output Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/pagination.html">Pagination Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/parser.html">Template Parser Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/security.html">Security Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/sessions.html">Session Library</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/table.html">HTML Table Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/trackback.html">Trackback Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/typography.html">Typography Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/unit_testing.html">Unit Testing Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/uri.html">URI Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/user_agent.html">User Agent Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/xmlrpc.html">XML-RPC and XML-RPC Server Classes</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../libraries/zip.html">Zip Encoding Class</a></li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/caching.html">Query Caching</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/forge.html">Database Manipulation with Database Forge</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../database/db_driver_reference.html">Database Driver Reference</a></li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/captcha_helper.html">CAPTCHA Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/directory_helper.html">Directory Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/download_helper.html">Download Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/email_helper.html">Email Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/file_helper.html">File Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/language_helper.html">Language Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/path_helper.html">Path Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/smiley_helper.html">Smiley Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/string_helper.html">String Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/typography_helper.html">Typography Helper</a></li>
|
|
<li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li>
|
|
<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">General Topics</a> »</li>
|
|
|
|
<li>Models</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="models">
|
|
<h1><a class="toc-backref" href="#id1">Models</a><a class="headerlink" href="#models" title="Permalink to this headline">¶</a></h1>
|
|
<p>Models are <strong>optionally</strong> available for those who want to use a more
|
|
traditional MVC approach.</p>
|
|
<div class="contents topic" id="page-contents">
|
|
<p class="topic-title first">Page Contents</p>
|
|
<ul class="simple">
|
|
<li><a class="reference internal" href="#models" id="id1">Models</a><ul>
|
|
<li><a class="reference internal" href="#what-is-a-model" id="id2">What is a Model?</a></li>
|
|
<li><a class="reference internal" href="#anatomy-of-a-model" id="id3">Anatomy of a Model</a></li>
|
|
<li><a class="reference internal" href="#loading-a-model" id="id4">Loading a Model</a></li>
|
|
<li><a class="reference internal" href="#auto-loading-models" id="id5">Auto-loading Models</a></li>
|
|
<li><a class="reference internal" href="#connecting-to-your-database" id="id6">Connecting to your Database</a></li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div class="section" id="what-is-a-model">
|
|
<h2><a class="toc-backref" href="#id2">What is a Model?</a><a class="headerlink" href="#what-is-a-model" title="Permalink to this headline">¶</a></h2>
|
|
<p>Models are PHP classes that are designed to work with information in
|
|
your database. For example, let’s say you use CodeIgniter to manage a
|
|
blog. You might have a model class that contains functions to insert,
|
|
update, and retrieve your blog data. Here is an example of what such a
|
|
model class might look like:</p>
|
|
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">class</span> <span class="nc">Blog_model</span> <span class="k">extends</span> <span class="nx">CI_Model</span> <span class="p">{</span>
|
|
|
|
<span class="k">public</span> <span class="nv">$title</span><span class="p">;</span>
|
|
<span class="k">public</span> <span class="nv">$content</span><span class="p">;</span>
|
|
<span class="k">public</span> <span class="nv">$date</span><span class="p">;</span>
|
|
|
|
<span class="k">public</span> <span class="k">function</span> <span class="nf">get_last_ten_entries</span><span class="p">()</span>
|
|
<span class="p">{</span>
|
|
<span class="nv">$query</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'entries'</span><span class="p">,</span> <span class="mi">10</span><span class="p">);</span>
|
|
<span class="k">return</span> <span class="nv">$query</span><span class="o">-></span><span class="na">result</span><span class="p">();</span>
|
|
<span class="p">}</span>
|
|
|
|
<span class="k">public</span> <span class="k">function</span> <span class="nf">insert_entry</span><span class="p">()</span>
|
|
<span class="p">{</span>
|
|
<span class="nv">$this</span><span class="o">-></span><span class="na">title</span> <span class="o">=</span> <span class="nv">$_POST</span><span class="p">[</span><span class="s1">'title'</span><span class="p">];</span> <span class="c1">// please read the below note</span>
|
|
<span class="nv">$this</span><span class="o">-></span><span class="na">content</span> <span class="o">=</span> <span class="nv">$_POST</span><span class="p">[</span><span class="s1">'content'</span><span class="p">];</span>
|
|
<span class="nv">$this</span><span class="o">-></span><span class="na">date</span> <span class="o">=</span> <span class="nb">time</span><span class="p">();</span>
|
|
|
|
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">insert</span><span class="p">(</span><span class="s1">'entries'</span><span class="p">,</span> <span class="nv">$this</span><span class="p">);</span>
|
|
<span class="p">}</span>
|
|
|
|
<span class="k">public</span> <span class="k">function</span> <span class="nf">update_entry</span><span class="p">()</span>
|
|
<span class="p">{</span>
|
|
<span class="nv">$this</span><span class="o">-></span><span class="na">title</span> <span class="o">=</span> <span class="nv">$_POST</span><span class="p">[</span><span class="s1">'title'</span><span class="p">];</span>
|
|
<span class="nv">$this</span><span class="o">-></span><span class="na">content</span> <span class="o">=</span> <span class="nv">$_POST</span><span class="p">[</span><span class="s1">'content'</span><span class="p">];</span>
|
|
<span class="nv">$this</span><span class="o">-></span><span class="na">date</span> <span class="o">=</span> <span class="nb">time</span><span class="p">();</span>
|
|
|
|
<span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">update</span><span class="p">(</span><span class="s1">'entries'</span><span class="p">,</span> <span class="nv">$this</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="nv">$_POST</span><span class="p">[</span><span class="s1">'id'</span><span class="p">]));</span>
|
|
<span class="p">}</span>
|
|
|
|
<span class="p">}</span>
|
|
</pre></div>
|
|
</div>
|
|
<div class="admonition note">
|
|
<p class="first admonition-title">Note</p>
|
|
<p class="last">The methods in the above example use the <a class="reference internal" href="../database/query_builder.html"><em>Query Builder</em></a> database methods.</p>
|
|
</div>
|
|
<div class="admonition note">
|
|
<p class="first admonition-title">Note</p>
|
|
<p class="last">For the sake of simplicity in this example we’re using <tt class="docutils literal"><span class="pre">$_POST</span></tt>
|
|
directly. This is generally bad practice, and a more common approach
|
|
would be to use the <a class="reference internal" href="../libraries/input.html"><em>Input Library</em></a>
|
|
<tt class="docutils literal"><span class="pre">$this->input->post('title')</span></tt>.</p>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="anatomy-of-a-model">
|
|
<h2><a class="toc-backref" href="#id3">Anatomy of a Model</a><a class="headerlink" href="#anatomy-of-a-model" title="Permalink to this headline">¶</a></h2>
|
|
<p>Model classes are stored in your <strong>application/models/</strong> directory.
|
|
They can be nested within sub-directories if you want this type of
|
|
organization.</p>
|
|
<p>The basic prototype for a model class is this:</p>
|
|
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">class</span> <span class="nc">Model_name</span> <span class="k">extends</span> <span class="nx">CI_Model</span> <span class="p">{</span>
|
|
|
|
<span class="k">public</span> <span class="k">function</span> <span class="nf">__construct</span><span class="p">()</span>
|
|
<span class="p">{</span>
|
|
<span class="k">parent</span><span class="o">::</span><span class="na">__construct</span><span class="p">();</span>
|
|
<span class="c1">// Your own constructor code</span>
|
|
<span class="p">}</span>
|
|
|
|
<span class="p">}</span>
|
|
</pre></div>
|
|
</div>
|
|
<p>Where <strong>Model_name</strong> is the name of your class. Class names <strong>must</strong> have
|
|
the first letter capitalized with the rest of the name lowercase. Make
|
|
sure your class extends the base Model class.</p>
|
|
<p>The file name must match the class name. For example, if this is your class:</p>
|
|
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">class</span> <span class="nc">User_model</span> <span class="k">extends</span> <span class="nx">CI_Model</span> <span class="p">{</span>
|
|
|
|
<span class="k">public</span> <span class="k">function</span> <span class="nf">__construct</span><span class="p">()</span>
|
|
<span class="p">{</span>
|
|
<span class="k">parent</span><span class="o">::</span><span class="na">__construct</span><span class="p">();</span>
|
|
<span class="c1">// Your own constructor code</span>
|
|
<span class="p">}</span>
|
|
|
|
<span class="p">}</span>
|
|
</pre></div>
|
|
</div>
|
|
<p>Your file will be this:</p>
|
|
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nx">application</span><span class="o">/</span><span class="nx">models</span><span class="o">/</span><span class="nx">User_model</span><span class="o">.</span><span class="nx">php</span>
|
|
</pre></div>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="loading-a-model">
|
|
<h2><a class="toc-backref" href="#id4">Loading a Model</a><a class="headerlink" href="#loading-a-model" title="Permalink to this headline">¶</a></h2>
|
|
<p>Your models will typically be loaded and called from within your
|
|
<a class="reference internal" href="controllers.html"><em>controller</em></a> methods. To load a model you will use
|
|
the following 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">model</span><span class="p">(</span><span class="s1">'model_name'</span><span class="p">);</span>
|
|
</pre></div>
|
|
</div>
|
|
<p>If your model is located in a sub-directory, include the relative path
|
|
from your models directory. For example, if you have a model located at
|
|
<em>application/models/blog/Queries.php</em> you’ll load it using:</p>
|
|
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">model</span><span class="p">(</span><span class="s1">'blog/queries'</span><span class="p">);</span>
|
|
</pre></div>
|
|
</div>
|
|
<p>Once loaded, you will access your model methods using an object with the
|
|
same name as your class:</p>
|
|
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">model</span><span class="p">(</span><span class="s1">'model_name'</span><span class="p">);</span>
|
|
|
|
<span class="nv">$this</span><span class="o">-></span><span class="na">model_name</span><span class="o">-></span><span class="na">method</span><span class="p">();</span>
|
|
</pre></div>
|
|
</div>
|
|
<p>If you would like your model assigned to a different object name you can
|
|
specify it via the second parameter of the loading method:</p>
|
|
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">model</span><span class="p">(</span><span class="s1">'model_name'</span><span class="p">,</span> <span class="s1">'foobar'</span><span class="p">);</span>
|
|
|
|
<span class="nv">$this</span><span class="o">-></span><span class="na">foobar</span><span class="o">-></span><span class="na">method</span><span class="p">();</span>
|
|
</pre></div>
|
|
</div>
|
|
<p>Here is an example of a controller, that loads a model, then serves a
|
|
view:</p>
|
|
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">class</span> <span class="nc">Blog_controller</span> <span class="k">extends</span> <span class="nx">CI_Controller</span> <span class="p">{</span>
|
|
|
|
<span class="k">public</span> <span class="k">function</span> <span class="nf">blog</span><span class="p">()</span>
|
|
<span class="p">{</span>
|
|
<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">model</span><span class="p">(</span><span class="s1">'blog'</span><span class="p">);</span>
|
|
|
|
<span class="nv">$data</span><span class="p">[</span><span class="s1">'query'</span><span class="p">]</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">blog</span><span class="o">-></span><span class="na">get_last_ten_entries</span><span class="p">();</span>
|
|
|
|
<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'blog'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
|
|
<span class="p">}</span>
|
|
<span class="p">}</span>
|
|
</pre></div>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="auto-loading-models">
|
|
<h2><a class="toc-backref" href="#id5">Auto-loading Models</a><a class="headerlink" href="#auto-loading-models" title="Permalink to this headline">¶</a></h2>
|
|
<p>If you find that you need a particular model globally throughout your
|
|
application, you can tell CodeIgniter to auto-load it during system
|
|
initialization. This is done by opening the
|
|
<strong>application/config/autoload.php</strong> file and adding the model to the
|
|
autoload array.</p>
|
|
</div>
|
|
<div class="section" id="connecting-to-your-database">
|
|
<h2><a class="toc-backref" href="#id6">Connecting to your Database</a><a class="headerlink" href="#connecting-to-your-database" title="Permalink to this headline">¶</a></h2>
|
|
<p>When a model is loaded it does <strong>NOT</strong> connect automatically to your
|
|
database. The following options for connecting are available to you:</p>
|
|
<ul>
|
|
<li><p class="first">You can connect using the standard database methods <a class="reference internal" href="../database/connecting.html"><em>described
|
|
here</em></a>, either from within your
|
|
Controller class or your Model class.</p>
|
|
</li>
|
|
<li><p class="first">You can tell the model loading method to auto-connect by passing
|
|
TRUE (boolean) via the third parameter, and connectivity settings,
|
|
as defined in your database config file will be used:</p>
|
|
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">model</span><span class="p">(</span><span class="s1">'model_name'</span><span class="p">,</span> <span class="s1">''</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span>
|
|
</pre></div>
|
|
</div>
|
|
</li>
|
|
<li><p class="first">You can manually pass database connectivity settings via the third
|
|
parameter:</p>
|
|
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$config</span><span class="p">[</span><span class="s1">'hostname'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'localhost'</span><span class="p">;</span>
|
|
<span class="nv">$config</span><span class="p">[</span><span class="s1">'username'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'myusername'</span><span class="p">;</span>
|
|
<span class="nv">$config</span><span class="p">[</span><span class="s1">'password'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'mypassword'</span><span class="p">;</span>
|
|
<span class="nv">$config</span><span class="p">[</span><span class="s1">'database'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'mydatabase'</span><span class="p">;</span>
|
|
<span class="nv">$config</span><span class="p">[</span><span class="s1">'dbdriver'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'mysqli'</span><span class="p">;</span>
|
|
<span class="nv">$config</span><span class="p">[</span><span class="s1">'dbprefix'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">''</span><span class="p">;</span>
|
|
<span class="nv">$config</span><span class="p">[</span><span class="s1">'pconnect'</span><span class="p">]</span> <span class="o">=</span> <span class="k">FALSE</span><span class="p">;</span>
|
|
<span class="nv">$config</span><span class="p">[</span><span class="s1">'db_debug'</span><span class="p">]</span> <span class="o">=</span> <span class="k">TRUE</span><span class="p">;</span>
|
|
|
|
<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">model</span><span class="p">(</span><span class="s1">'model_name'</span><span class="p">,</span> <span class="s1">''</span><span class="p">,</span> <span class="nv">$config</span><span class="p">);</span>
|
|
</pre></div>
|
|
</div>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
|
|
|
|
</div>
|
|
<footer>
|
|
|
|
<div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
|
|
|
|
<a href="helpers.html" class="btn btn-neutral float-right" title="Helper Functions">Next <span class="fa fa-arrow-circle-right"></span></a>
|
|
|
|
|
|
<a href="views.html" class="btn btn-neutral" title="Views"><span class="fa fa-arrow-circle-left"></span> Previous</a>
|
|
|
|
</div>
|
|
|
|
|
|
<hr/>
|
|
|
|
<div role="contentinfo">
|
|
<p>
|
|
© Copyright 2014 - 2017, British Columbia Institute of Technology.
|
|
Last updated on Mar 20, 2017.
|
|
</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:'3.1.4',
|
|
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> |