/// <summary>
/// The post action from add view. Save the operation data
/// </summary>
/// <param name="operationVm">Operation view model object</param>
/// <returns>string "true" or "false + error message"</returns>
public ActionResult AddEditOperation(OperationVm operationVm)
{
int operId;
string isSaved = OperationHelper.AddEditOperation(operationVm, out operId);
return(Json(new { isSaved = isSaved, operId = operId }));
}