adding support for filter patterns.

Signed-off-by: Taylor Otwell <taylorotwell@gmail.com>

laravel/routing/filter.php

@@ -13,6 +13,13 @@ class Filter {
 	 */
 	public static $filters = array();
 
+	/**
+	 * The route filters that are based on pattern.
+	 *
+	 * @var array
+	 */
+	public static $patterns = array();
+
 	/**
 	 * All of the registered filter aliases.
 	 *
@@ -39,7 +46,17 @@ class Filter {
 	{
 		if (isset(static::$aliases[$name])) $name = static::$aliases[$name];
 
-		static::$filters[$name] = $callback;
+		if (starts_with($name, 'pattern: '))
+		{
+			foreach (explode(', ', substr($name, 9)) as $pattern)
+			{
+				static::$patterns[$pattern] = $callback;
+			}
+		}
+		else
+		{
+			static::$filters[$name] = $callback;
+		}
 	}
 
 	/**