mates showing in part studio not present when in assembly

kyle_altendorf

https://cad.onshape.com/documents/31d9f3436d1f6286f056967a/v/c7ea79f0a01fbb55a00bce3f/e/fd67035c9e5e62f496ede719

I am exploring and learning about both derive and featurescript here. In each of the part studios base_unit and insert_unit I create a mate connector. I use my featurescript with an instantiator to create a configurable grid of those in other part studios base and bin respectively. There I can see all the desired mate connectors.

They are not visible in the assembly.

1. Is there a modeling approach to getting these to pass through? My impression is that they are owned by the part in the 'sub-part-studio' where they are created (such as base_unit) and thus when I assemble base itself they are not made available in the assembly.
2. I have attempted to add to my featurescript an ability to query all the mates that were created in the instantiation of the grid. The plan was to then create new properly owned mate connectors that would end up present and usable in an assembly. But… I haven't yet gotten the code to get me an actual mate object that I could then 'duplicate' or set ownership of (if that's even a thing) etc.

for (var name, query in instanceQueriesByName)
{
    debug(context, "name: " ~ name);
    debug(context, "query: " ~ query);
    var featureId = query["featureId"];
    debug(context, "feature id: " ~ featureId);
    var mate_query = qMateConnectorsOfParts(qCreatedBy(featureId));
    debug(context, "is mate query empty: " ~ isQueryEmpty(context, mate_query));
    debug(context, "a: " ~ evaluateQuery(context, mate_query));
    for (var q in evaluateQuery(context, mate_query))
    {
        debug(context, "  a: " ~ q);
        debug(context, "  a: " ~ evaluateQuery(context, q));
    }
    for (var thing in evaluateQuery(context, mate_query))
    {
        debug(context, "thing:" ~ thing);
    }
}

debug: name: 0x0y
debug: query: Query : { "entityType" : EntityType : "BODY" , "featureId" : Id : [ "FMmzkb7PtMYvtKx_1" , "instantiator" , "Auto0" ] , "queryType" : QueryType : "CREATED_BY" }
debug: feature id: Id : [ "FMmzkb7PtMYvtKx_1" , "instantiator" , "Auto0" ]
debug: is mate query empty: true
debug: a: []

I am interested in learning so would be happy for help in either or both paths to addressing the high level goal. Or some other path too…

Thanks.

Cheers,

-kyle

kyle_altendorf

I eventually managed to get the query, creation, and ownership correct.

https://cad.onshape.com/documents/31d9f3436d1f6286f056967a/v/17cfe86a0094f9ee674dbd9b/e/fd67035c9e5e62f496ede719