Filter for relations

[aimeos]

We have a nested set tree (kalnoy/nestedset) for pages, which contains relations for navigation like ancestors (breadcrumb), children (sub-navigation) and subtree (global menu).

For the subtree relation, we need to return the page subtree depending on the tree level passed as parameter. We don't want to use the HTTP request in the model due to seperation of concerns to get the parameter there. What's the best option to hand over the parameter to the model relation?

[lindyhopchris]

So, I also don't really understand this question either. Parameters aren't really "handed" to the model relationship. The parameters and what they do is defined by the JSON:API spec, and this package follows that spec.