improvement

models/user.go

@@ -185,7 +185,9 @@ func LoginCheck(username string, password string) (string, error) {
 
 				if err != nil {
 					// No valid group membership
-					return "", err
+					errString := fmt.Sprintf("ldap group membership check unsuccessful : '%s'\n", err)
+					log.Printf("LoginCheck %s\n", errString)
+					return "", errors.New(errString)
 				}
 			}
 		} else {