Custom Products module: Implement the backend service

After you Custom Products module: Implement the view model class of the Products module web service, you need to create the backend service:

1. Expand the ProductsModule project node and navigate to the folder Web » Services folder.
   Open the context menu of the folder and click Add » Class.
2. Name the class file ProductsBackendService.cs and click Add.
3. Open the ProductsBackendService.cs file and add the following using statements:
   using ProductCatalogSample.Data;

   using ProductCatalogSample.Model;

   using ProductCatalogSample.Web.Services.Data;

   using Telerik.Sitefinity.Modules;

   using Telerik.Sitefinity.Modules.GenericContent;

   using Telerik.Sitefinity.Lifecycle;
4. Make the ProductsBackendService class inherit the ContentServiceBase<ProductItem, ProductItemViewModel, and ProductsManager> classes:
   public class ProductsBackendService : ContentServiceBase<ProductItem, ProductItemViewModel, LifecycleDecoratorWrapper<ProductItem, ProductsManager, ProductsDataProvider>>

   {

   }
5. Implement the abstract members of ContentServiceBase in the following way:
   public override IQueryable<ProductItem> GetChildContentItems(Guid parentId, string providerName)

   {

       throw new NotSupportedException();

   }

    

   public override ProductItem GetContentItem(Guid id, string providerName)

   {

       return ProductsManager.GetManager(providerName).GetProduct(id);

   }

    

   public override IQueryable<ProductItem> GetContentItems(string providerName)

   {

       return ProductsManager.GetManager(providerName).GetProducts();

   }

    

   public override ProductItem GetParentContentItem(Guid id, string providerName)

   {

       throw new NotSupportedException();

   }

    

   public override IEnumerable<ProductItemViewModel> GetViewModelList(IEnumerable<ProductItem> contentList, ContentDataProviderBase dataProvider)

   {

       var viewModelList = new List<ProductItemViewModel>();

       foreach (var product in contentList)

           viewModelList.Add(new ProductItemViewModel(product, dataProvider));

       return viewModelList;

   }

    

   public override LifecycleDecoratorWrapper<ProductItem, ProductsManager, ProductsDataProvider> GetManager(string providerName)

   {

       return new LifecycleDecoratorWrapper<ProductItem, ProductsManager, ProductsDataProvider>(providerName);

   }