Merge branch 'develop' into feature/frontend

@@ -299,7 +299,8 @@ class ItemViewSet(viewsets.ViewSet):
                     return Response({'message': 'item is not existed.'}, status=status.HTTP_204_NO_CONTENT)
                 if child.is_folder == True:
                     return Response({'message': 'item is folder'}, status=status.HTTP_204_NO_CONTENT)
-                copiedName = child.name + "_복사본_" + str(datetime.now().strftime('%Y-%m-%d %H:%M'))
+                name = child.name.split(".")
+                copiedName = name[0]+ "_복사본_" + str(datetime.now().strftime('%Y-%m-%d %H:%M'))+"." + name[-1]
                 copiedItem = Item(is_folder=False, name=copiedName, path=child.path, parent=parent_id,
                                   user_id=child.user_id, size=child.size, status=child.status)
                 copiedItem.save()
@@ -398,6 +399,7 @@ class ItemViewSet(viewsets.ViewSet):
             # 파일 객체 생성
             file_name = request.POST.get('name', '')
             file_size = request.POST.get('size', '')
+            file_id = request.POST.get('item_id', '')
             file_parent = pk
             file_type = mimetypes.guess_type(file_name)[0]
             upload_item = Item(name=file_name, size=file_size, user_id=1, file_type=file_type, parent=file_parent)
@@ -407,7 +409,7 @@ class ItemViewSet(viewsets.ViewSet):
 
             presigned_post = s3.generate_presigned_post(
                 s3_bucket,
-                file_name,
+                file_id,
                 {
                     "acl": "private",
                     "Content-Type": file_type,
@@ -434,7 +436,7 @@ class ItemViewSet(viewsets.ViewSet):
 
             data = {
                 "signed_url": presigned_post,
-                'url': '%s/%s' % (presigned_post["url"], file_name),
+                'url': '%s/%s' % (presigned_post["url"], file_id),
                 'item': res
             }