I try to use AshGraphql to make my graphql endpoint. But I can’t find a way to make viewer query. Similar to viewer query in github graphql api, I try to return user type which related to token in header. But it seems like I can’t use header when i define graphql DSL. How can I make query which uses header values?
This is my user resource
defmodule Core.Account.User do
use Ash.Resource,
data_layer: AshPostgres.DataLayer,
extensions: [AshAuthentication, AshGraphql.Resource]
attributes do
uuid_primary_key :id
attribute :email, :ci_string, allow_nil?: false
attribute :hashed_password, :string, allow_nil?: false, sensitive?: true
timestamps allow_nil?: false
end
relationships do
has_many :reviews, Core.Review.Review do
api Core.Review
destination_attribute :writer_id
end
end
authentication do
api Core.Account
strategies do
password :password do
identity_field :email
hashed_password_field :hashed_password
end
end
tokens do
enabled? true
token_resource Core.Account.Token
signing_secret fn _, _ ->
Application.fetch_env(:core, :token_signing_secret)
end
end
end
actions do
defaults [:read]
create :sign_up do
reject [:hashed_password]
argument :password, :string, allow_nil?: false, sensitive?: true
change {AshAuthentication.Strategy.Password.HashPasswordChange, strategy_name: :password}
end
end
code_interface do
define_for Core.Account
define :sign_up, action: :sign_up, args: [:email, :password]
end
identities do
identity :unique_email, [:email]
end
postgres do
table "user"
repo Core.Repo
end
end
Thanks 
