class Doorkeeper::TokensController

def token
  @token ||=
    if params[:token_type_hint] == "refresh_token"
      Doorkeeper.config.access_token_model.by_refresh_token(params["token"])
    else
      Doorkeeper.config.access_token_model.by_token(params["token"]) ||
        Doorkeeper.config.access_token_model.by_refresh_token(params["token"])
    end
end