diff options
| author | Andrey Andreev <narf@devilix.net> | 2018-03-22 15:48:55 +0100 |
|---|---|---|
| committer | Andrey Andreev <narf@devilix.net> | 2018-03-22 15:48:55 +0100 |
| commit | 71e647782764184e3aab4faffe6d99176758979f (patch) | |
| tree | 74dbdd50a61cd5674915c144aca9ebbc00b235b8 /user_guide/libraries/language.html | |
| parent | b12fbad77bd69ca0c7624a9094c29b7691ea6107 (diff) | |
[ci skip] 3.1.8 release
Diffstat (limited to 'user_guide/libraries/language.html')
| -rw-r--r-- | user_guide/libraries/language.html | 733 |
1 files changed, 733 insertions, 0 deletions
diff --git a/user_guide/libraries/language.html b/user_guide/libraries/language.html new file mode 100644 index 000000000..339d99a11 --- /dev/null +++ b/user_guide/libraries/language.html @@ -0,0 +1,733 @@ + + +<!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>Language Class — CodeIgniter 3.1.8 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 3.1.8 documentation" href="../index.html"/> + <link rel="up" title="Libraries" href="index.html"/> + <link rel="next" title="Loader Class" href="loader.html"/> + <link rel="prev" title="Javascript Class" href="javascript.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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+<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>Language 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="language-class"> +<h1>Language Class<a class="headerlink" href="#language-class" title="Permalink to this headline">¶</a></h1> +<p>The Language Class provides functions to retrieve language files and +lines of text for purposes of internationalization.</p> +<p>In your CodeIgniter <strong>system</strong> folder, you will find a <strong>language</strong> sub-directory +containing a set of language files for the <strong>english</strong> idiom. +The files in this directory (<strong>system/language/english/</strong>) define the regular messages, +error messages, and other generally output terms or expressions, for the different parts +of the CodeIgniter framework.</p> +<p>You can create or incorporate your own language files, as needed, in order to provide +application-specific error and other messages, or to provide translations of the core +messages into other languages. These translations or additional messages would go inside +your <strong>application/language/</strong> directory, with separate sub-directories for each idiom +(for instance, ‘french’ or ‘german’).</p> +<p>The CodeIgniter framework comes with a set of language files for the “english” idiom. +Additional approved translations for different idioms may be found in the +<a class="reference external" href="https://github.com/bcit-ci/codeigniter3-translations">CodeIgniter 3 Translations repositories</a>. +Each repository deals with a single idiom.</p> +<p>When CodeIgniter loads language files, it will load the one in <strong>system/language/</strong> +first and will then look for an override in your <strong>application/language/</strong> directory.</p> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">Each language should be stored in its own folder. For example, +the English files are located at: system/language/english</p> +</div> +<div class="contents local topic" id="contents"> +<ul class="simple"> +<li><a class="reference internal" href="#handling-multiple-languages" id="id1">Handling Multiple Languages</a><ul> +<li><a class="reference internal" href="#sample-language-files" id="id2">Sample Language Files</a></li> +<li><a class="reference internal" href="#example-of-switching-languages" id="id3">Example of switching languages</a></li> +</ul> +</li> +<li><a class="reference internal" href="#internationalization" id="id4">Internationalization</a></li> +<li><a class="reference internal" href="#using-the-language-class" id="id5">Using the Language Class</a><ul> +<li><a class="reference internal" href="#creating-language-files" id="id6">Creating Language Files</a></li> +<li><a class="reference internal" href="#loading-a-language-file" id="id7">Loading A Language File</a></li> +<li><a class="reference internal" href="#fetching-a-line-of-text" id="id8">Fetching a Line of Text</a><ul> +<li><a class="reference internal" href="#using-language-lines-as-form-labels" id="id9">Using language lines as form labels</a></li> +</ul> +</li> +<li><a class="reference internal" href="#auto-loading-languages" id="id10">Auto-loading Languages</a></li> +</ul> +</li> +<li><a class="reference internal" href="#class-reference" id="id11">Class Reference</a></li> +</ul> +</div> +<div class="custom-index container"></div><div class="section" id="handling-multiple-languages"> +<h2><a class="toc-backref" href="#id1">Handling Multiple Languages</a><a class="headerlink" href="#handling-multiple-languages" title="Permalink to this headline">¶</a></h2> +<p>If you want to support multiple languages in your application, you would provide folders inside +your <strong>application/language/</strong> directory for each of them, and you would specify the default +language in your <strong>application/config/config.php</strong>.</p> +<p>The <strong>application/language/english/</strong> directory would contain any additional language files +needed by your application, for instance for error messages.</p> +<p>Each of the other idiom-specific directories would contain the core language files that you +obtained from the translations repositories, or that you translated yourself, as well as +any additional ones needed by your application.</p> +<p>You would store the language you are currently using, for instance in a session variable.</p> +<div class="section" id="sample-language-files"> +<h3><a class="toc-backref" href="#id2">Sample Language Files</a><a class="headerlink" href="#sample-language-files" title="Permalink to this headline">¶</a></h3> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nb">system</span><span class="o">/</span> + <span class="nx">language</span><span class="o">/</span> + <span class="nx">english</span><span class="o">/</span> + <span class="o">...</span> + <span class="nx">email_lang</span><span class="o">.</span><span class="nx">php</span> + <span class="nx">form_validation_lang</span><span class="o">.</span><span class="nx">php</span> + <span class="o">...</span> + +<span class="nx">application</span><span class="o">/</span> + <span class="nx">language</span><span class="o">/</span> + <span class="nx">english</span><span class="o">/</span> + <span class="nx">error_messages_lang</span><span class="o">.</span><span class="nx">php</span> + <span class="nx">french</span><span class="o">/</span> + <span class="o">...</span> + <span class="nx">email_lang</span><span class="o">.</span><span class="nx">php</span> + <span class="nx">error_messages_lang</span><span class="o">.</span><span class="nx">php</span> + <span class="nx">form_validation_lang</span><span class="o">.</span><span class="nx">php</span> + <span class="o">...</span> +</pre></div> +</div> +</div> +<div class="section" id="example-of-switching-languages"> +<h3><a class="toc-backref" href="#id3">Example of switching languages</a><a class="headerlink" href="#example-of-switching-languages" title="Permalink to this headline">¶</a></h3> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$idiom</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">session</span><span class="o">-></span><span class="na">get_userdata</span><span class="p">(</span><span class="s1">'language'</span><span class="p">);</span> +<span class="nv">$this</span><span class="o">-></span><span class="na">lang</span><span class="o">-></span><span class="na">load</span><span class="p">(</span><span class="s1">'error_messages'</span><span class="p">,</span> <span class="nv">$idiom</span><span class="p">);</span> +<span class="nv">$oops</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">lang</span><span class="o">-></span><span class="na">line</span><span class="p">(</span><span class="s1">'message_key'</span><span class="p">);</span> +</pre></div> +</div> +</div> +</div> +<div class="section" id="internationalization"> +<h2><a class="toc-backref" href="#id4">Internationalization</a><a class="headerlink" href="#internationalization" title="Permalink to this headline">¶</a></h2> +<p>The Language class in CodeIgniter is meant to provide an easy and lightweight +way to support multiplelanguages in your application. It is not meant to be a +full implementation of what is commonly called <a class="reference external" href="http://en.wikipedia.org/wiki/Internationalization_and_localization">internationalization and localization</a>.</p> +<p>We use the term “idiom” to refer to a language using its common name, +rather than using any of the international standards, such as “en”, “en-US”, +or “en-CA-x-ca” for English and some of its variants.</p> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">There is nothing to prevent you from using those abbreviations in your application!</p> +</div> +</div> +<div class="section" id="using-the-language-class"> +<h2><a class="toc-backref" href="#id5">Using the Language Class</a><a class="headerlink" href="#using-the-language-class" title="Permalink to this headline">¶</a></h2> +<div class="section" id="creating-language-files"> +<h3><a class="toc-backref" href="#id6">Creating Language Files</a><a class="headerlink" href="#creating-language-files" title="Permalink to this headline">¶</a></h3> +<p>Language files must be named with <strong>_lang.php</strong> as the filename extension. +For example, let’s say you want to create a file containing error messages. +You might name it: error_lang.php</p> +<p>Within the file you will assign each line of text to an array called +<code class="docutils literal"><span class="pre">$lang</span></code> with this prototype:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$lang</span><span class="p">[</span><span class="s1">'language_key'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'The actual message to be shown'</span><span class="p">;</span> +</pre></div> +</div> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">It’s a good practice to use a common prefix for all messages +in a given file to avoid collisions with similarly named items in other +files. For example, if you are creating error messages you might prefix +them with error_</p> +</div> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$lang</span><span class="p">[</span><span class="s1">'error_email_missing'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'You must submit an email address'</span><span class="p">;</span> +<span class="nv">$lang</span><span class="p">[</span><span class="s1">'error_url_missing'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'You must submit a URL'</span><span class="p">;</span> +<span class="nv">$lang</span><span class="p">[</span><span class="s1">'error_username_missing'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'You must submit a username'</span><span class="p">;</span> +</pre></div> +</div> +</div> +<div class="section" id="loading-a-language-file"> +<h3><a class="toc-backref" href="#id7">Loading A Language File</a><a class="headerlink" href="#loading-a-language-file" title="Permalink to this headline">¶</a></h3> +<p>In order to fetch a line from a particular file you must load the file +first. Loading a language file is done with the following code:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">lang</span><span class="o">-></span><span class="na">load</span><span class="p">(</span><span class="s1">'filename'</span><span class="p">,</span> <span class="s1">'language'</span><span class="p">);</span> +</pre></div> +</div> +<p>Where filename is the name of the file you wish to load (without the +file extension), and language is the language set containing it (ie, +english). If the second parameter is missing, the default language set +in your <strong>application/config/config.php</strong> file will be used.</p> +<p>You can also load multiple language files at the same time by passing an array of language files as first parameter.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">lang</span><span class="o">-></span><span class="na">load</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'filename1'</span><span class="p">,</span> <span class="s1">'filename2'</span><span class="p">));</span> +</pre></div> +</div> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">The <em>language</em> parameter can only consist of letters.</p> +</div> +</div> +<div class="section" id="fetching-a-line-of-text"> +<h3><a class="toc-backref" href="#id8">Fetching a Line of Text</a><a class="headerlink" href="#fetching-a-line-of-text" title="Permalink to this headline">¶</a></h3> +<p>Once your desired language file is loaded you can access any line of +text using this function:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">lang</span><span class="o">-></span><span class="na">line</span><span class="p">(</span><span class="s1">'language_key'</span><span class="p">);</span> +</pre></div> +</div> +<p>Where <em>language_key</em> is the array key corresponding to the line you wish +to show.</p> +<p>You can optionally pass FALSE as the second argument of that method to +disable error logging, in case you’re not sure if the line exists:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">lang</span><span class="o">-></span><span class="na">line</span><span class="p">(</span><span class="s1">'misc_key'</span><span class="p">,</span> <span class="k">FALSE</span><span class="p">);</span> +</pre></div> +</div> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">This method simply returns the line. It does not echo it.</p> +</div> +<div class="section" id="using-language-lines-as-form-labels"> +<h4><a class="toc-backref" href="#id9">Using language lines as form labels</a><a class="headerlink" href="#using-language-lines-as-form-labels" title="Permalink to this headline">¶</a></h4> +<p>This feature has been deprecated from the language library and moved to +the <a class="reference internal" href="../helpers/language_helper.html#lang" title="lang"><code class="xref php php-func docutils literal"><span class="pre">lang()</span></code></a> function of the <a class="reference internal" href="../helpers/language_helper.html"><span class="doc">Language Helper</span></a>.</p> +</div> +</div> +<div class="section" id="auto-loading-languages"> +<h3><a class="toc-backref" href="#id10">Auto-loading Languages</a><a class="headerlink" href="#auto-loading-languages" title="Permalink to this headline">¶</a></h3> +<p>If you find that you need a particular language globally throughout your +application, you can tell CodeIgniter to <a class="reference internal" href="../general/autoloader.html"><span class="doc">auto-load</span></a> it during system initialization. This is done +by opening the <strong>application/config/autoload.php</strong> file and adding the +language(s) to the autoload array.</p> +</div> +</div> +<div class="section" id="class-reference"> +<h2><a class="toc-backref" href="#id11">Class Reference</a><a class="headerlink" href="#class-reference" title="Permalink to this headline">¶</a></h2> +<dl class="class"> +<dt id="CI_Lang"> +<em class="property">class </em><code class="descname">CI_Lang</code><a class="headerlink" href="#CI_Lang" title="Permalink to this definition">¶</a></dt> +<dd><dl class="method"> +<dt id="CI_Lang::load"> +<code class="descname">load</code><span class="sig-paren">(</span><em>$langfile</em><span class="optional">[</span>, <em>$idiom = ''</em><span class="optional">[</span>, <em>$return = FALSE</em><span class="optional">[</span>, <em>$add_suffix = TRUE</em><span class="optional">[</span>, <em>$alt_path = ''</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Lang::load" 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>$langfile</strong> (<em>mixed</em>) – Language file to load or array with multiple files</li> +<li><strong>$idiom</strong> (<em>string</em>) – Language name (i.e. ‘english’)</li> +<li><strong>$return</strong> (<em>bool</em>) – Whether to return the loaded array of translations</li> +<li><strong>$add_suffix</strong> (<em>bool</em>) – Whether to add the ‘_lang’ suffix to the language file name</li> +<li><strong>$alt_path</strong> (<em>string</em>) – An alternative path to look in for the language file</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Array of language lines if $return is set to TRUE, otherwise void</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> +</td> +</tr> +</tbody> +</table> +<p>Loads a language file.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Lang::line"> +<code class="descname">line</code><span class="sig-paren">(</span><em>$line</em><span class="optional">[</span>, <em>$log_errors = TRUE</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Lang::line" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$line</strong> (<em>string</em>) – Language line key name</li> +<li><strong>$log_errors</strong> (<em>bool</em>) – Whether to log an error if the line isn’t found</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Language line string or 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">string</p> +</td> +</tr> +</tbody> +</table> +<p>Fetches a single translation line from the already loaded language files, +based on the line’s name.</p> +</dd></dl> + +</dd></dl> + +</div> +</div> + + + </div> + <footer> + + <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> + + <a href="loader.html" class="btn btn-neutral float-right" title="Loader Class">Next <span class="fa fa-arrow-circle-right"></span></a> + + + <a href="javascript.html" class="btn btn-neutral" title="Javascript Class"><span class="fa fa-arrow-circle-left"></span> Previous</a> + + </div> + + + <hr/> + + <div role="contentinfo"> + <p> + © Copyright 2014 - 2018, British Columbia Institute of Technology. + Last updated on Mar 22, 2018. + </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:'3.1.8', + COLLAPSE_INDEX:false, + FILE_SUFFIX:'.html', + HAS_SOURCE: false + }; 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