Add support for explicit 404s

router.go

@@ -147,6 +147,13 @@ func (r *Route) Match(method string, reqPath string) *RouteMatch {
 		}
 	}
 
+	// Special handling for explicit 404's.
+	if action == "404" {
+		return &RouteMatch{
+			Action: "404",
+		}
+	}
+
 	// Split the action into controller and method
 	actionSplit := strings.Split(action, ".")
 	if len(actionSplit) != 2 {
@@ -236,6 +243,11 @@ func (router *Router) validate(route *Route) *Error {
 		return nil
 	}
 
+	// Skip 404s
+	if route.Action == "404" {
+		return nil
+	}
+
 	// We should be able to load the action.
 	parts := strings.Split(route.Action, ".")
 	if len(parts) != 2 {

router_test.go

@@ -148,7 +148,9 @@ GET  /app/{id}               Application.Show
 POST /app/{id}               Application.Save
 
 GET  /public/                staticDir:www
-*    /{controller}/{action} {controller}.{action}
+*    /{controller}/{action}  {controller}.{action}
+
+GET  /favicon.ico            404
 `
 
 var routeMatchTestCases = map[*http.Request]*RouteMatch{
@@ -201,6 +203,17 @@ var routeMatchTestCases = map[*http.Request]*RouteMatch{
 		Params:         map[string]string{"controller": "Implicit", "action": "Route"},
 		StaticFilename: "",
 	},
+
+	&http.Request{
+		Method: "GET",
+		URL:    &url.URL{Path: "/favicon.ico"},
+	}: &RouteMatch{
+		ControllerName: "",
+		MethodName:     "",
+		Action:         "404",
+		Params:         map[string]string{},
+		StaticFilename: "",
+	},
 }
 
 func TestRouteMatches(t *testing.T) {

server.go

@@ -50,6 +50,12 @@ func handleInternal(w http.ResponseWriter, r *http.Request, ws *websocket.Conn)
 		return
 	}
 
+	// The route may want to explicitly return a 404.
+	if route.Action == "404" {
+		NotFound(req, resp, "(intentionally)")
+		return
+	}
+
 	// Dispatch the static files first.
 	if route.StaticFilename != "" {
 		http.ServeFile(w, r, route.StaticFilename)