我想在模块中扩展KOHANA的i18n类，以便在查找默认文件结构之前，我可以首先查找数据库以查找翻译。问题是我想要覆盖的方法是静态的。
原始类有一个方法get()所以我打电话给我的班级：Appointedd_I18n::get('Term goes here...')，该方法调用load()。这是我想要覆盖的方法，但因为它是静态的，所以它不会加载MY方法，而是加载原始方法。
这是我的模块/类：
<?php defined('SYSPATH') or die('No direct script access.');
/**
* Extends the Kohana translation code to include a db lookup.
*
*/
class Appointedd_I18n extends Kohana_I18n {
/**
* Returns the translation table for a given language.
*
* // Get all defined Spanish messages
* $messages = I18n::load('es-es');
*
* @param string $lang language to load
* @return array
*/
public static function load($lang)
{
die('think I\'ll look up the db'); // to test this method is being called
if (isset(I18n::$_cache[$lang]))
{
return I18n::$_cache[$lang];
}
// New translation table
$table = array();
// Split the language: language, region, locale, etc
$parts = explode('-', $lang);
do
{
// Create a path for this set of parts
$path = implode(DIRECTORY_SEPARATOR, $parts);
if ($files = Kohana::find_file('i18n', $path, NULL, TRUE))
{
$t = array();
foreach ($files as $file)
{
// Merge the language strings into the sub table
$t = array_merge($t, Kohana::load($file));
}
// Append the sub table, preventing less specific language
// files from overloading more specific files
$table += $t;
}
// Remove the last part
array_pop($parts);
}
while ($parts);
// Cache the translation table locally
return I18n::$_cache[$lang] = $table;
}
} // END class Appointedd_i18n
以下是KOHANA_I18n课程：
<?php defined('SYSPATH') or die('No direct script access.');
/**
* Internationalization (i18n) class. Provides language loading and translation
* methods without dependencies on [gettext](http://php.net/gettext).
*
* Typically this class would never be used directly, but used via the __()
* function, which loads the message and replaces parameters:
*
* // Display a translated message
* echo __('Hello, world');
*
* // With parameter replacement
* echo __('Hello, :user', array(':user' => $username));
*
* @package Kohana
* @category Base
* @author Kohana Team
* @copyright (c) 2008-2012 Kohana Team
* @license http://kohanaframework.org/license
*/
class Kohana_I18n {
/**
* @var string target language: en-us, es-es, zh-cn, etc
*/
public static $lang = 'en-us';
/**
* @var string source language: en-us, es-es, zh-cn, etc
*/
public static $source = 'en-us';
/**
* @var array cache of loaded languages
*/
protected static $_cache = array();
/**
* Get and set the target language.
*
* // Get the current language
* $lang = I18n::lang();
*
* // Change the current language to Spanish
* I18n::lang('es-es');
*
* @param string $lang new language setting
* @return string
* @since 3.0.2
*/
public static function lang($lang = NULL)
{
if ($lang)
{
// Normalize the language
I18n::$lang = strtolower(str_replace(array(' ', '_'), '-', $lang));
}
return I18n::$lang;
}
/**
* Returns translation of a string. If no translation exists, the original
* string will be returned. No parameters are replaced.
*
* $hello = I18n::get('Hello friends, my name is :name');
*
* @param string $string text to translate
* @param string $lang target language
* @return string
*/
public static function get($string, $lang = NULL)
{
if ( ! $lang)
{
// Use the global target language
$lang = I18n::$lang;
}
// Load the translation table for this language
$table = I18n::load($lang);
// Return the translated string if it exists
return isset($table[$string]) ? $table[$string] : $string;
}
/**
* Returns the translation table for a given language.
*
* // Get all defined Spanish messages
* $messages = I18n::load('es-es');
*
* @param string $lang language to load
* @return array
*/
public static function load($lang)
{
if (isset(I18n::$_cache[$lang]))
{
return I18n::$_cache[$lang];
}
// New translation table
$table = array();
// Split the language: language, region, locale, etc
$parts = explode('-', $lang);
do
{
// Create a path for this set of parts
$path = implode(DIRECTORY_SEPARATOR, $parts);
if ($files = Kohana::find_file('i18n', $path, NULL, TRUE))
{
$t = array();
foreach ($files as $file)
{
// Merge the language strings into the sub table
$t = array_merge($t, Kohana::load($file));
}
// Append the sub table, preventing less specific language
// files from overloading more specific files
$table += $t;
}
// Remove the last part
array_pop($parts);
}
while ($parts);
// Cache the translation table locally
return I18n::$_cache[$lang] = $table;
}
} // End I18n
if ( ! function_exists('__'))
{
/**
* Kohana translation/internationalization function. The PHP function
* [strtr](http://php.net/strtr) is used for replacing parameters.
*
* __('Welcome back, :user', array(':user' => $username));
*
* [!!] The target language is defined by [I18n::$lang].
*
* @uses I18n::get
* @param string $string text to translate
* @param array $values values to replace in the translated text
* @param string $lang source language
* @return string
*/
function __($string, array $values = NULL, $lang = 'en-us')
{
if ($lang !== I18n::$lang)
{
// The message and target languages are different
// Get the translation for this message
$string = I18n::get($string);
}
return empty($values) ? $string : strtr($string, $values);
}
}
有没有办法扩展Kohana_I18n以包含数据库更新而不编辑系统类？
答案 0 :(得分：1)
由于Kohana_I18n :: get（）调用 I18n :: load（），所以你要做的就是覆盖Kohana_I18n :: get（）方法，以便它调用Appointedd_I18n :: load（方法。
class Appointedd_I18n extends Kohana_I18n {
...
public static function get($string, $lang = NULL)
{
if ( ! $lang)
{
// Use the global target language
$lang = I18n::$lang;
}
// Load the translation table for this language
$table = self::load($lang);
// Return the translated string if it exists
return isset($table[$string]) ? $table[$string] : $string;
}
...
}
答案 1 :(得分：1)
“有没有办法扩展Kohana_I18n以包含数据库更新而不编辑系统类？” 是。
听起来你不熟悉Kohana的级联文件系统，你不明白它在这种情况下是如何有用的，或者你不想因为某种原因改变I18n的行为。
如果不是最后一个，那么只需将Appointedd_I18n重命名为I18n并相应地更改文件名。 SYSPATH/classes/I18n.php只包含class I18n extends Kohana_I18n {}的文件。如果您查看SYSPATH/classes/Kohana/I18n.php，您会看到self或Kohana_I18n从未用于调用任何内容。
他们一直在I18n类中使用Kohana_I18n，以便您可以'替换'I18n类并更改其行为。