ReadStringsFormValue 추가

server.go

@@ -488,6 +488,13 @@ func ReadStringFormValue(r url.Values, key string) (string, bool) {
 	return strval, len(strval) > 0
 }
 
+func ReadStringsFormValue(r url.Values, key string) ([]string, bool) {
+	if r.Has(key) {
+		return (map[string][]string)(r)[key], true
+	}
+	return nil, false
+}
+
 type encoder interface {
 	Encode(any) error
 }