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Allow :alpha in routes for CodeIgniter 2.0.1 Reactor.

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Just save this as MY_Router.php and upload to application/core/ and now you'll be able to use us :alpha along with :num and :any in your routes to signify that you just want to match a-z.

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  1. <?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
  2. /**
  3.  * CodeIgniter
  4.  *
  5.  * An open source application development framework for PHP 5.1.6 or newer
  6.  *
  7.  * @package		CodeIgniter
  8.  * @author		ExpressionEngine Dev Team
  9.  * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  10.  * @license		http://codeigniter.com/user_guide/license.html
  11.  * @link		http://codeigniter.com
  12.  * @since		Version 1.0
  13.  * @filesource
  14.  */
  15.  
  16. // ------------------------------------------------------------------------
  17.  
  18. /**
  19.  * Router Class
  20.  *
  21.  * Parses URIs and determines routing
  22.  *
  23.  * @package		CodeIgniter
  24.  * @subpackage	Libraries
  25.  * @author		ExpressionEngine Dev Team
  26.  * @category	Libraries
  27.  * @link		http://codeigniter.com/user_guide/general/routing.html
  28.  */
  29. class MY_Router extends CI_Router {
  30.  
  31. 	function __construct()
  32. 	{
  33. 		parent::__construct();
  34. 	}
  35.  
  36. 	/**
  37. 	 *  Parse Routes
  38. 	 *
  39. 	 * This function matches any routes that may exist in
  40. 	 * the config/routes.php file against the URI to
  41. 	 * determine if the class/method need to be remapped.
  42. 	 *
  43. 	 * @access	private
  44. 	 * @return	void
  45. 	 */
  46. 	function _parse_routes()
  47. 	{
  48. 		// Turn the segment array into a URI string
  49. 		$uri = implode('/', $this->uri->segments);
  50.  
  51. 		// Is there a literal match?  If so we're done
  52. 		if (isset($this->routes[$uri]))
  53. 		{
  54. 			return $this->_set_request(explode('/', $this->routes[$uri]));
  55. 		}
  56.  
  57. 		// Loop through the route array looking for wild-cards
  58. 		foreach ($this->routes as $key => $val)
  59. 		{
  60. 			/* 
  61. 			// OLD CODEIGNITER WILD-CARD REGEX
  62.  
  63. 			// Convert wild-cards to RegEx
  64. 			$key = str_replace(':any', '.+', str_replace(':num', '[0-9]+', $key));
  65.  
  66. 			*/
  67.  
  68. 			// Convert wild-cards to RegEx
  69. 			// Additionally added :alpha to the wild cards.
  70. 			// @Author Josh Manders
  71. 			// @Website joshmanders.com
  72. 			$wild_cards = array(':any' => '.+', ':num' => '[0-9]+', ':alpha' => '[a-zA-Z]+');
  73. 			foreach ($wild_cards as $wild_card => $regex)
  74. 			{
  75. 				$key = str_replace($wild_card, $regex, $key);
  76. 			}
  77.  
  78. 			// Does the RegEx match?
  79. 			if (preg_match('#^'.$key.'$#', $uri))
  80. 			{
  81. 				// Do we have a back-reference?
  82. 				if (strpos($val, '$') !== FALSE AND strpos($key, '(') !== FALSE)
  83. 				{
  84. 					$val = preg_replace('#^'.$key.'$#', $val, $uri);
  85. 				}
  86.  
  87. 				return $this->_set_request(explode('/', $val));
  88. 			}
  89. 		}
  90.  
  91. 		// If we got this far it means we didn't encounter a
  92. 		// matching route so we'll set the site default route
  93. 		$this->_set_request($this->uri->segments);
  94. 	}
  95. }
  96. // END Router Class
  97.  
  98. /* End of file MY_Router.php */
  99. /* Location: ./app/core/MY_Router.php */

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