AE
Ash Elixir•3y ago
NDaniil

How to read resource without actions

I'm trying to inspect MyApp.Accounts.Token using iex, but I'm getting NoPrimaryAction error. Is it possible to inspect resources without defining read action? Is there a way to convert it to Ecto.Schema, so I can use Ecto.Query? 
> MyApp.Accounts.read(MyApp.Accounts.Token) 
{:error,
 %Ash.Error.Invalid{
   errors: [
     %Ash.Error.Invalid.NoPrimaryAction{
       resource: MyApp.Accounts.Token,
       type: :read,
       changeset: nil,
       query: nil,
       error_context: [],
       vars: [],
       path: [],
       stacktrace: #Stacktrace<>,
       class: :invalid
     }
   ],
   stacktraces?: true,
   changeset: nil,
   query: nil,
   error_context: [],
   vars: [],
   path: [],
   stacktrace: #Stacktrace<>,
   class: :invalid
 }}
> MyApp.Accounts.read(MyApp.Accounts.Token) 
{:error,
 %Ash.Error.Invalid{
   errors: [
     %Ash.Error.Invalid.NoPrimaryAction{
       resource: MyApp.Accounts.Token,
       type: :read,
       changeset: nil,
       query: nil,
       error_context: [],
       vars: [],
       path: [],
       stacktrace: #Stacktrace<>,
       class: :invalid
     }
   ],
   stacktraces?: true,
   changeset: nil,
   query: nil,
   error_context: [],
   vars: [],
   path: [],
   stacktrace: #Stacktrace<>,
   class: :invalid
 }}
defmodule MyApp.Accounts.Token do
  use Ash.Resource,
    data_layer: AshPostgres.DataLayer,
    extensions: [AshAuthentication.TokenResource]

  token do
    api MyApp.Accounts
  end

  postgres do
    table "tokens"
    repo MyApp.Repo
  end
end
defmodule MyApp.Accounts.Token do
  use Ash.Resource,
    data_layer: AshPostgres.DataLayer,
    extensions: [AshAuthentication.TokenResource]

  token do
    api MyApp.Accounts
  end

  postgres do
    table "tokens"
    repo MyApp.Repo
  end
end
2 Replies
jart
jart•3y ago
Hi there. There are actions generated by AshAuthentication but you can add your own also. Just add 
actions do
  defaults [:read]
end
actions do
  defaults [:read]
end
And you’ll be good to go. In answer to your other question - every Ash resource is an Ecto schema so you can just do MyApp.Repo.all(MyApp.Accounts.Token)
NDaniil
NDaniilOP•3y ago
every Ash resource is an Ecto schema
Awesome, this is what I was looking for. I just found an introspection tool to get a list of actions without reading AshAuthentication source code. 
iex(6)> Ash.Resource.Info.actions(MyApp.Accounts.Token) |> Enum.filter(& &1.type == :read) |> Enum.map(& &1.name)
[:get_token, :get_confirmation_changes, :revoked?, :read_expired]
iex(6)> Ash.Resource.Info.actions(MyApp.Accounts.Token) |> Enum.filter(& &1.type == :read) |> Enum.map(& &1.name)
[:get_token, :get_confirmation_changes, :revoked?, :read_expired]
My problem can also be solved by adding action: :read 
MyApp.Streams.read(MyApp.Streams.Event, action: :read)
MyApp.Streams.read(MyApp.Streams.Event, action: :read)

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