fix: add error code support

error.go

@@ -28,7 +28,7 @@ import (
 )
 
 const (
-	errorTypeHandler    = iota
+	errorTypeHandler = iota
 	errorTypeController
 )
 
@@ -359,6 +359,19 @@ func gatewayTimeout(rw http.ResponseWriter, r *http.Request) {
 	)
 }
 
+// show 413 Payload Too Large
+func payloadTooLarge(rw http.ResponseWriter, r *http.Request) {
+	responseError(rw, r,
+		413,
+		"<br>The page you have requested is unavailable."+
+			"<br>Perhaps you are here because:"+
+			"<br><br><ul>"+
+			"<br>The request entity is larger than limits defined by server"+
+			"<br>Please change the request entity and try again."+
+			"</ul>",
+	)
+}
+
 func responseError(rw http.ResponseWriter, r *http.Request, errCode int, errContent string) {
 	t, _ := template.New("beegoerrortemp").Parse(errtpl)
 	data := M{

hooks.go

@@ -34,6 +34,7 @@ func registerDefaultErrorHandler() error {
 		"504": gatewayTimeout,
 		"417": invalidxsrf,
 		"422": missingxsrf,
+		"413": payloadTooLarge,
 	}
 	for e, h := range m {
 		if _, ok := ErrorMaps[e]; !ok {