public GroupMessage PrepareGroupMessage(GroupMessageViewModel model, bool isUpdate, string userName) { var groupMessage = new GroupMessage { IsDeleted = false, IsUpdated = isUpdate, Message = model.Message, CreateDate = DateTime.Now, GroupId = model.GroupId, Groups = _manageGroupRepository.GetGroupById(model.GroupId), User = _userInformationService.GetIdentityByUserName(userName), UserId = _userInformationService.GetIdentityByUserName(userName).Id }; return(groupMessage); }