CODEWITHSUNDEEP
asp.net-web-apiodataasp.net-web-api-odata
hyperN
hyperN

Reputation: 2754

asp.net web api odataNo IdLink

I'm using Odata with web api and get this error:

 <m:innererror>
<m:message>
The 'ObjectContent`1' type failed to serialize the response body for content type       'application/json; charset=utf-8'.
</m:message>
<m:type>System.InvalidOperationException</m:type>
 <m:stacktrace/>
<m:internalexception>
 <m:message>
No IdLink factory was found. Try calling HasIdLink on the EntitySetConfiguration for    'Tag'.
</m:message>
 <m:type>System.InvalidOperationException</m:type>

Here is my OData configuration:

  config.Routes.MapODataRoute("ODataRoute", "odata", CreateModel());
   static IEdmModel CreateModel()
    {
        var modelBuilder = new ODataModelBuilder();

        modelBuilder.EntitySet<Tag>("Tag");
        modelBuilder.EntitySet<Post>("Post");

        return modelBuilder.GetEdmModel();
    }

Here is my OData controller

  public class TagController : EntitySetController<Tag, int>
{
    private readonly IUnitOfWork _unitOfWork;

    public TagController(IUnitOfWork unitOfWork)
    {
        _unitOfWork = unitOfWork;
    }


    public override IQueryable<Tag> Get()
    {
        return _unitOfWork.BlogTagQueries.GetAllTags().AsQueryable();
    }

    protected override Tag GetEntityByKey(int key)
    {
        return _unitOfWork.BlogTagQueries.GetTagById(key);
    }
}

Can anyone please tell me, why am I getting this error ?

Upvotes: 0

Views: 787

Answers (1)

Kiran
Kiran

Reputation: 57989

You probably were trying to use ODataConventionModelBuilder instead of ODataModelBuilder. The convention builder would automatically create the link generating factories for you.

So, you can change the code like below:
var modelBuilder = new ODataConventionModelBuilder();

if you are curious as to how to create link factories yourself, you can check the following sample(specifically the file ODataServiceSample/ODataService/ModelBuilder.cs):

http://aspnet.codeplex.com/sourcecontrol/latest#Samples/WebApi/ODataServiceSample/ReadMe.txt

Upvotes: 6

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