Hi there,
I’m working with ash now a couple of weeks and I’m quite a big fan but now I’m struggling with a - so it seems - basic usecase.

I’m using the ash framework to manage my resources in the database (postgres).

I would like to store structs which are from a foreign library, namely instances of Ash.Query, to the datasbase. like:

attributes do
    attribute :query, Ash.Query
    ...
end

Of course using Ash.Query directly as type is not possible. My first intention was to solve this with a custom Ash.Type and use…

@impl true
  def storage_type, do: :map

…to tell the data layer I would like to store it as a :map on the data layer. but this did not work.

My question is: how can I define attributes on my ash resources, which are able to store structs of foreign libraries (structs which are NOT part of my code/project) and if it is only possible over custom Ash.Type’s, how can I serialize those structs properly, so I can write and read them like regular attributes?

Thanks for any hints
Claudio