Use Maps with GraphQL
Table of Contents
If you define an
Ash.Type.NewType
that is a subtype of
:map
,
and
you add the
fields
constraint which specifies field names and their types,
AshGraphql
will automatically derive an appropriate GraphQL type for it.
For example:
defmodule MyApp.Types.Metadata do
@moduledoc false
use Ash.Type.NewType, subtype_of: :map, constraints: [
fields: [
title: [
type: :string
],
description: [
type: :string
]
]
]
def graphql_type, do: :metadata
end
Bypassing type generation for an map
Add the
graphql_define_type?/1
callback, like so, to skip Ash’s generation (i.e if you’re defining it yourself)
@impl true
def graphql_define_type?(_), do: false