Merge pull request #1390 from Anahkiasen/feature/url_language

Add URL::to_language and HTML::link_to_language localization helpers

laravel/documentation/urls.md

@@ -59,6 +59,17 @@ Sometimes you may need to generate a URL to a named route, but also need to spec
 
 	$url = URL::to_action('user@profile', array($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
 

laravel/documentation/views/html.md

@@ -87,6 +87,17 @@ For example, the < symbol should be converted to its entity representation. Conv
 
 	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
 

laravel/html.php

@@ -247,6 +247,19 @@ class HTML {
 		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.
 	 *

laravel/tests/cases/url.test.php

@@ -106,6 +106,26 @@ class URLTest extends PHPUnit_Framework_TestCase {
 		$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.

laravel/url.php

@@ -294,6 +294,31 @@ class URL {
 		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.
 	 *