Enable HTTP Verb in Routing

system/core/Router.php

@@ -345,15 +345,42 @@ protected function _parse_routes()
 		// Turn the segment array into a URI string
 		$uri = implode('/', $this->uri->segments);
 
+		// Get HTTP verb
+		$http_verb = strtolower($_SERVER['REQUEST_METHOD']);
+
 		// Is there a literal match?  If so we're done
-		if (isset($this->routes[$uri]) && is_string($this->routes[$uri]))
+		if (isset($this->routes[$uri]))
 		{
-			return $this->_set_request(explode('/', $this->routes[$uri]));
+			// Check default routes format
+			if (is_string($this->routes[$uri]))
+			{
+				return $this->_set_request(explode('/', $this->routes[$uri]));
+			}
+			// Is there any matching http verb?
+			elseif (is_array($this->routes[$uri]) && isset($this->routes[$uri][$http_verb]))
+			{
+				return $this->_set_request(explode('/', $this->routes[$uri][$http_verb]));
+			}
 		}
 
 		// Loop through the route array looking for wildcards
 		foreach ($this->routes as $key => $val)
 		{
+			// Check if route format is using http verb
+			if (is_array($val))
+			{
+				// Does the http verb match?
+				if (isset($val[$http_verb]))
+				{
+					$val = $val[$http_verb];
+				}
+				// No match, skip to next rule
+				else
+				{
+					continue;
+				}
+			}
+
 			// Convert wildcards to RegEx
 			$key = str_replace(array(':any', ':num'), array('[^/]+', '[0-9]+'), $key);
 

user_guide_src/source/changelog.rst

@@ -420,6 +420,7 @@ Release Date: Not Released
 
    -  :doc:`URI Routing <general/routing>` changes include:
 
+      -  Added possibility to route requests using HTTP Verb
       -  Added possibility to route requests using callbacks.
       -  Added a new reserved route (*translate_uri_dashes*) to allow usage of dashes in the controller and method URI segments.
       -  Deprecated methods ``fetch_directory()``, ``fetch_class()`` and ``fetch_method()`` in favor of their respective public properties.

user_guide_src/source/general/routing.rst

@@ -142,6 +142,42 @@ routing rules to process the back-references. Example::
 		return 'catalog/product_edit/' . strtolower($product_type) . '/' . $id;
 	};
 
+Using HTTP Verb in Routes
+=========================
+
+If you prefer you can use HTTP Verb (or method) to define your routing rules.
+This is particularly useful when building RESTful application. You can use standard HTTP
+Verb (GET, PUT, POST, DELETE) or custom HTTP Verb (e.g: PURGE). HTTP Verb rule is case 
+insensitive. All you need to do is add array index using HTTP Verb rule. Example::
+
+	$route['products']['put'] = 'product/insert';
+
+In the above example, a PUT request to URI "products" would call the "product" controller
+class and "insert" method
+
+::
+
+	$route['products/(:num)']['DELETE'] = 'product/delete/$1';
+
+A DELETE request to URL with "products" as first segment and a number in the second will be
+remapped to the "product" class and "delete" method passing in the match as a variable to
+the method.
+
+::
+
+	$route['products/([a-z]+)/(\d+)']['get'] = 'product/$1/$2';
+
+A GET request to a URI similar to products/shirts/123 would call the "product" controller
+class and "shirt" method with number as method parameter
+
+Using HTTP Verb is optional, so if you want any HTTP Verb to be handled in one rule
+You could just write your routing rule without HTTP Verb. Example::
+
+	$route['product'] = 'product';
+
+This way, all incoming request using any HTTP method containing the word "product"
+in the first segment will be remapped to "product" class
+
 Reserved Routes
 ===============