Absinthe: how to rename a field in the output

I had to make this change in my types:

object :comment do
  field :description, :string do
    middleware(MapGet, :text)
  end

  # ... more fields
end

A resolver for the field should work.

field :comment, :string do
  resolve fn parent, _, _ ->
    {:ok, Map.get(parent, :description)}
  end
end

I think you should replace :comment with :text to match my case. Thanks for the alternative method, bookmarking it.

How about using an alias?

`name` - The name of the field, usually assigned automatically by the Absinthe.Schema.Notation.field/4
Including this option will bypass the snake_case to camelCase conversion.

field :description, :string, name: :text?

This won’t work because the name option is used for snakecase/camelcase renames. resolve needs to be used if the underlying key is different than the one exposed via GQL.

I like your idea, I wouldn’t have thought to do it that way @dimitarvp

I use this little helper

field(:ingredients_description, :string, resolve: from_parent(& &1.ingredients))

def from_parent(cb) do
  fn parent, _, _ ->
    {:ok, cb.(parent)}
  end
end