How to filter queryset in the ModelService?

[hairypalm]

My understanding is that I should create a ModelService to support a ModelController in fulfilling requests. This is understandable and easy, but I can't figure out how to get to the user object, or request, or controller, from the ModelService. There is discussion about RouterContext, but that is also not available in the ModelService.

If I create the endpoint in the controller then I can do it, but it seems like the architecture encourages me to implement the CRUD in the ModelService, which means I need to filter there (unless I am out to lunch)

My use case is to limit the queryset to instances that belong to the user, for example.

Thanks.