Relational data in Odata supported web api

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Hi,

I am currently working on (basically researching) on OData. So I am new to open data protocol.

And i want to use this facility with my web api project. As per the requirement i want to fetch the relational data. Basically a data from Parent and Child tables.

Everything seems to be working fine. But as i fetch this relational data it gives me only data from the parent table and not from the child table. (May be because of self referencing. )

Does any one has any idea about how to resolve this issue ?

And if i create a ViewModel and feed data into that than it gives me 406: not acceptable.

Posted 25-Feb-13 19:45pm

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Syed Taha Tariq Ali · Answer 1 · 2013-06-04T12:57:00

You would need to configure a route to your odata endpoint. This is done inside the App_Start\WebApiConfig.cs file in the Register method. Use the following code to add an entity model and a route:

C#

ODataModelBuilder modelBuilder = new ODataConventionModelBuilder();
modelBuilder.EntitySet<product>("ProductSet");

Microsoft.Data.Edm.IEdmModel model = modelBuilder.GetEdmModel();
config.Routes.MapODataRoute("ODataRoute", "odataSuffix", model);
</product>

Note that the name of your controller should match the name of EntitySet. In this example the name of entity set is ProductSet so your controller must be called ProductSetController.

Once this is configured the Product model can be accessed by the following url:

http://hostname:portNumber/odataSuffix/ProductSet