Based on the "extension" of the requested path, returns an appropriate content type

notzippy · notzippy · commit 9b346bd2f71e · 2017-05-30T20:57:21.000-07:00
closes revel#963, revel#1045
diff --git a/http.go b/http.go
@@ -13,6 +13,7 @@ import (
 	"strings"
 
 	"golang.org/x/net/websocket"
+	"path/filepath"
 )
 
 // Request Revel's HTTP request object structure
@@ -78,6 +79,18 @@ func ResolveContentType(req *http.Request) string {
 // returning a default of "html" when Accept header cannot be mapped to a
 // value above.
 func ResolveFormat(req *http.Request) string {
+	ext := strings.ToLower(filepath.Ext(req.URL.Path))
+	switch ext {
+	case ".html":
+		return "html"
+	case ".json":
+		return "json"
+	case ".xml":
+		return "xml"
+	case ".txt":
+		return "txt"
+	}
+
 	accept := req.Header.Get("accept")
 
 	switch {
