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33 lines
769 B
Markdown
33 lines
769 B
Markdown
# Use Maps with GraphQL
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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.
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For example:
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```elixir
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defmodule MyApp.Types.Metadata do
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@moduledoc false
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use Ash.Type.NewType, subtype_of: :map, constraints: [
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fields: [
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title: [
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type: :string
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],
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description: [
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type: :string
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]
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]
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]
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def graphql_type, do: :metadata
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end
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```
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## Bypassing type generation for an map
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Add the `graphql_define_type?/1` callback, like so, to skip Ash's generation (i.e if you're defining it yourself)
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```elixir
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@impl true
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def graphql_define_type?(_), do: false
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```
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