public ErrorModel AddDishToMenu(AddDishModel model)
        {
            var errors = new ErrorModel();
            if (model == null)
            {
                errors.Messages.Add("Invalid data.");
                return errors;
            }

            var dish = model.DishToAdd;
            if (dish == null)
            {
                errors.Messages.Add("No dish found to add.");
                return errors;
            }

            var provider = DbContext.GetProviders().SingleOrDefault(p => p.ProviderId == model.ProviderId);
            if (provider == null || provider.ProviderStatus != ProviderStatus.Verified)
            {
                errors.Messages.Add("Cannot add dish for any address not verified provider.");
                return errors;
            }

            var newDish = dish.ToEntity();
            newDish.ProviderId = model.ProviderId;
            newDish.Available = true;

            try
            {
                DbContext.SaveDishes(new List<DishEntity>{newDish});
                return errors;
            }
            catch (Exception ex)
            {
                errors.Messages.Add(ex.Message);
                return errors;
            }
        }
 public ErrorModel AddDishToMenu(AddDishModel addModel)
 {
     return Service.AddDishToMenu(addModel);
 }