From 89e3bf1fbd3325a97b1eea3ea1ca07c2e9dc0e07 Mon Sep 17 00:00:00 2001
From: Anahkiasen <ehtnam6@gmail.com>
Date: Fri, 26 Oct 2012 22:32:52 +0100
Subject: [PATCH] Add URL::to_language and HTML::link_to_language localization
 helpers

Signed-off-by: Anahkiasen <ehtnam6@gmail.com>
---
 laravel/documentation/urls.md       | 11 +++++++++++
 laravel/documentation/views/html.md | 13 ++++++++++++-
 laravel/html.php                    | 19 ++++++++++++++++---
 laravel/tests/cases/url.test.php    | 20 ++++++++++++++++++++
 laravel/url.php                     | 25 +++++++++++++++++++++++++
 5 files changed, 84 insertions(+), 4 deletions(-)

diff --git a/laravel/documentation/urls.md b/laravel/documentation/urls.md
index 4263712f..8c03f9b1 100644
--- a/laravel/documentation/urls.md
+++ b/laravel/documentation/urls.md
@@ -59,6 +59,17 @@ #### Generating a URL to an action with wildcard values:
 
 	$url = URL::to_action('user@profile', array($username));
 
+<a name="urls-to-a-different-language"></a>
+## URLs To A Different Language
+
+#### Generating a URL to the same page in another language:
+
+	$url = URL::to_language('fr');
+
+#### Generating a URL to your home page in another language:
+
+	$url = URL::to_language('fr', true);
+
 <a name="urls-to-assets"></a>
 ## URLs To Assets
 
diff --git a/laravel/documentation/views/html.md b/laravel/documentation/views/html.md
index aabe244d..dcdb253f 100644
--- a/laravel/documentation/views/html.md
+++ b/laravel/documentation/views/html.md
@@ -87,6 +87,17 @@ ### Generating a link to a controller action with wildcard values:
 
 	echo HTML::link_to_action('user@profile', 'User Profile', array($username));
 
+<a name="links-to-a-different-language"></a>
+## Links To A Different Language
+
+#### Generating a link to the same page in another language:
+
+	echo HTML::link_to_language('fr');
+
+#### Generating a link to your home page another language
+
+	echo HTML::link_to_language('fr', true);
+
 <a name="mail-to-links"></a>
 ## Mail-To Links
 
@@ -119,7 +130,7 @@ #### Creating lists from an array of items:
 	echo HTML::ol(array('Get Peanut Butter', 'Get Chocolate', 'Feast'));
 
 	echo HTML::ul(array('Ubuntu', 'Snow Leopard', 'Windows'));
-	
+
 	echo HTML::dl(array('Ubuntu' => 'An operating system by Canonical', 'Windows' => 'An operating system by Microsoft'));
 
 <a name="custom-macros"></a>
diff --git a/laravel/html.php b/laravel/html.php
index 211e4022..c53db632 100644
--- a/laravel/html.php
+++ b/laravel/html.php
@@ -238,6 +238,19 @@ public static function link_to_action($action, $title = null, $parameters = arra
 		return static::link(URL::to_action($action, $parameters), $title, $attributes);
 	}
 
+	/**
+	 * Generate an HTML link to a different language
+	 *
+	 * @param  string  $language
+	 * @param  string  $title
+	 * @param  array   $attributes
+	 * @return string
+	 */
+	public static function link_to_language($language, $title = null, $attributes = array())
+	{
+		return static::link(URL::to_language($language), $title, $attributes);
+	}
+
 	/**
 	 * Generate an HTML mailto link.
 	 *
@@ -347,7 +360,7 @@ private static function listing($type, $list, $attributes = array())
 
 		return '<'.$type.static::attributes($attributes).'>'.$html.'</'.$type.'>';
 	}
-	
+
 	/**
 	 * Generate a definition list.
 	 *
@@ -360,13 +373,13 @@ public static function dl($list, $attributes = array())
 		$html = '';
 
 		if (count($list) == 0) return $html;
-		
+
 		foreach ($list as $term => $description)
 		{
 			$html .= '<dt>'.static::entities($term).'</dt>';
 			$html .= '<dd>'.static::entities($description).'</dd>';
 		}
-		
+
 		return '<dl'.static::attributes($attributes).'>'.$html.'</dl>';
 	}
 
diff --git a/laravel/tests/cases/url.test.php b/laravel/tests/cases/url.test.php
index 603265ab..cd0a4223 100644
--- a/laravel/tests/cases/url.test.php
+++ b/laravel/tests/cases/url.test.php
@@ -105,6 +105,26 @@ public function testToRouteMethodGeneratesURLsToRoutes()
 		$this->assertEquals('http://localhost/index.php/url/test/taylor/otwell', URL::to_route('url-test-2', array('taylor', 'otwell')));
 	}
 
+	/**
+	 * Test the URL::to_language method.
+	 *
+	 * @group laravel
+	 */
+	public function testToLanguageMethodGeneratesURLsToDifferentLanguage()
+	{
+		URI::$uri = 'foo/bar';
+		Config::set('application.languages', array('sp', 'fr'));
+		Config::set('application.language', 'sp');
+
+		$this->assertEquals('http://localhost/index.php/fr/foo/bar', URL::to_language('fr'));
+		$this->assertEquals('http://localhost/index.php/fr/', URL::to_language('fr', true));
+
+		Config::set('application.index', '');
+		$this->assertEquals('http://localhost/fr/foo/bar', URL::to_language('fr'));
+
+		$this->assertEquals('http://localhost/sp/foo/bar', URL::to_language('en'));
+	}
+
 
 	/**
 	 * Test language based URL generation.
diff --git a/laravel/url.php b/laravel/url.php
index c87139e4..e0693252 100644
--- a/laravel/url.php
+++ b/laravel/url.php
@@ -294,6 +294,31 @@ public static function to_route($name, $parameters = array())
 		return static::to($uri, $https);
 	}
 
+	/**
+	 * Get the URL to switch language, keeping the current page or not
+	 *
+	 * @param  string  $language  The new language
+	 * @param  boolean $reset     Whether navigation should be reset
+	 * @return string             An URL
+	 */
+	public static function to_language($language, $reset = false)
+	{
+		// Get the url to use as base
+		$url = $reset ? URL::home() : URL::to(URI::current());
+
+		// Validate the language
+		if (!in_array($language, Config::get('application.languages')))
+		{
+			return $url;
+		}
+
+		// Get the language we're switching from and the one we're going to
+		$from = '/'.Config::get('application.language').'/';
+		$to   = '/'.$language.'/';
+
+		return str_replace($from, $to, $url);
+	}
+
 	/**
 	 * Substitute the parameters in a given URI.
 	 *