public void Save([ARDataBind("Business", AutoLoad = AutoLoadBehavior.NewRootInstanceIfInvalidKey)] UCampus.Core.Models.Business business,
            [ARDataBind("Business.HoursOfOperation", AutoLoad = AutoLoadBehavior.NewInstanceIfInvalidKey)] Hours hoursOfOperation,
            [ARDataBind("Business.DeliveryHours", AutoLoad = AutoLoadBehavior.NewInstanceIfInvalidKey)] Hours deliveryHours,
            [ARDataBind("Business.AdditionalHours", AutoLoad = AutoLoadBehavior.NewInstanceIfInvalidKey)] Hours additionalHours)
        {
            if (business == null)
            {
                PropertyBag["Business"] = null;
                RenderView("InvalidSave.vm");
                return;
            }
            if (!business.UserIsManager(User))
            {
                RenderView("InvalidSave.vm");
                return;
            }
            try
            {
                //save hours if add.
                bool isEditing = business.Id > 0;
                if (!isEditing)
                {
                    HoursRepository.SaveAndFlush(hoursOfOperation);
                    HoursRepository.SaveAndFlush(deliveryHours);
                    HoursRepository.SaveAndFlush(additionalHours);
                }
                //fill fields.
                business.HoursOfOperation = hoursOfOperation;
                business.DeliveryHours = deliveryHours;
                business.AdditionalHours = additionalHours;
                if (!isEditing)
                {
                    business.VerificationCode = new Random().Next(1000, 9999).ToString();
                }
                FillLatitudeLongitude(business);
                FillAmenities(business);
                //save business.
                Core.Repositories.BusinessRepository.Save(business);
                //show success message.
                Flash["Success"] = isEditing ? "Business Updated" : "Business Created";
                //redirect to business profile.
                RedirectTo("Business", "Home", "Index",
                           new System.Collections.Specialized.NameValueCollection() { { "id", business.Id.ToString() } });
            }
            catch (Castle.Components.Validator.ValidationException validationException)
            {
                LogWriter.Write("Error in save business - " + validationException.ToString() + " - " + DateTime.Now.ToString());
                //show error message.
                Flash["ValidationException"] = validationException;
                //add view data.
                AddDataToModels(business);
                RenderView("Form.vm");
            }
        }

        private void FillAmenities(UCampus.Core.Models.Business business)
        {
            //save business amenities.
            var amenities = AmenityRepository.GetByBusinessType(business.BusinessType.Parent.Id);
            foreach (var amenity in amenities)
            {
                //get business amenity value.
                string value = Request.Form["amenity_" + amenity.Id.ToString()];
                if (value == "on") { value = "true"; }
                else if (value == null) { value = "false"; }
                //check if business amenity exists.
                var existingBusinessAmenity = business.BusinessAmenities.Where(ba => ba.Amenity.Id == amenity.Id
                    && ba.Business.Id == business.Id).FirstOrDefault();
                if (existingBusinessAmenity != null)
                {
                    if (value.Length > 0 && value != "false")
                    {//update existing business amenity.
                        existingBusinessAmenity.Value = value;
                    }
                    else
                    {//delete existing business amenity.
                        business.BusinessAmenities.Remove(existingBusinessAmenity);
                    }
                }
                else if (value.Length > 0 && value != "false")
                {//create new business amenity.
                    var businessAmenity = new BusinessAmenity();
                    businessAmenity.Amenity = amenity;
                    businessAmenity.Business = business;
                    businessAmenity.Value = value;
                    business.BusinessAmenities.Add(businessAmenity);
                }
            }
        }

        private void FillLatitudeLongitude(UCampus.Core.Models.Business business)
        {
            //save lat & long.
            string address = business.Address1 + (String.IsNullOrEmpty(business.Address2) ? String.Empty : (" " + business.Address2))
                + ", " + business.City + ", " + business.State + " " + business.Zip;
            var coordinates = GeoHelper.GetCoordinates(address);
            business.Latitude = coordinates.Latitude;
            business.Longitude = coordinates.Longitude;
        }