Fix batch methods like AddUsersInBatch()

object/permission.go

@@ -15,6 +15,7 @@
 package object
 
 import (
+	"fmt"
 	"strings"
 
 	"github.com/casdoor/casdoor/conf"
@@ -217,16 +218,15 @@ func AddPermissionsInBatch(permissions []*Permission) bool {
 	}
 
 	affected := false
-	for i := 0; i < (len(permissions)-1)/batchSize+1; i++ {
-		start := i * batchSize
-		end := (i + 1) * batchSize
+	for i := 0; i < len(permissions); i += batchSize {
+		start := i
+		end := i + batchSize
 		if end > len(permissions) {
 			end = len(permissions)
 		}
 
 		tmp := permissions[start:end]
-		// TODO: save to log instead of standard output
-		// fmt.Printf("Add Permissions: [%d - %d].\n", start, end)
+		fmt.Printf("The syncer adds permissions: [%d - %d]\n", start, end)
 		if AddPermissions(tmp) {
 			affected = true
 		}