public JsonResult AddToTags(int documentId, [FromBody] IEnumerable <int> tags) { var document = _documentRepository.GetDocument(documentId); IEnumerable <Tag> foundedTags = tags.Select(t => _tagRepository.GetTag(t)); _documentManager.AddDocumentToTags(document, foundedTags); object data = null; return(new JsonResult(new { data, success = "true" })); }