Webapi odata expand with entity framework functions

Question

I have a Product odata controller and a Product Category odata controller.
They are both using entity framework entities and have navigation methods used for odata expan

Answer 1

Here is the code I used to fix the problem.
By no means is it "correct" code.
For example: ODataQueryOptions.Top / Skip will be null if used on an Action that contains ODataActionParameters.
ODataActionParameters will contain the Top / Skip as a parameter? Very odd.
So I added both in the hopes that Microsoft or someone else can fix this issue in the future.

Controller:

[HttpPost]
[EnableQuery]
public PageResult SomeFunction(ODataQueryOptions options, ODataActionParameters parameters)
{
    // Get the paging settings from ODataActionParameters since they are not shown on the ODataQueryOptions. Maybe there will be some fix for this in the future.
    int pageSize = (int)parameters["pageSize"];
    int take = (int)parameters["take"];
    int skip = (int)parameters["skip"];
    int page = (int)parameters["page"];

    // Apply page size settings
    ODataQuerySettings settings = new ODataQuerySettings();

    // Create a temp result set to hold the results from the stored procedure
    var tempResults = db.SomeStoredProc().ToList(); // ToList is required to get the "real" total count before paging

    // Apply the query options. For now this is only needed to get the correct count since the options does not seem to contain the TOP / SKIP when using OData parameters.
    IQueryable results = options.ApplyTo(tempResults.AsQueryable(), settings);

    // This was needed for custom paging. EXAMPLE: http://www.asp.net/web-api/overview/odata-support-in-aspnet-web-api/supporting-odata-query-options
    return new PageResult(tempResults.Skip(skip).Take(take),
                            Request.ODataProperties().NextLink,
                            Request.ODataProperties().TotalCount);
}

Then WebApiConfig:

var SomeFunction = builder.Entity().Collection.Action("SomeFunction");
SomeFunction.Parameter("take");
SomeFunction.Parameter("skip");
SomeFunction.Parameter("page");
SomeFunction.Parameter("pageSize");
SomeFunction.ReturnsCollectionFromEntitySet("SomeObjects");