Absinthe computed properties?

Fields can have their own resolve functions so you could try:

  object :person do
    field :full_name, :string do
      resolve fn person, _, _ ->
        {:ok, "#{person.first_name} #{person.last_name}"}
      end
    end
  end

query do
   field :people, type: list_of(:person) do
      resolve &PersonResolver.list/2
   end
end

docs for that:

Absinthe.Schema.Notation — absinthe v1.11.0
3 artity function

Easy to miss, most of the examples I’ve seen use 2 artity resolve

Awesome! Thank you, I’ll give that a go.

I did completely miss that hunting around the docs.

Ah yeah the 3 arity version could be better documented. We have some planned improvements on the guides after the book is out.

Probably the main thing to note is that there’s nothing special about the fields on the query object, they work exactly the same way as fields on any other object. We can add resolvers to top level fields on the query object but we can also add resolvers to any other field on any other object. In fact if you don’t add one there’s one added by default, which is the only reason they return any value at all.