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Update test to demo issue with policy on aggregate

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The issue occurs when an aggregate is loaded, and the aggregated
resource itself has a relates_to_actor_via policy.

The following error is produced at test/aggregate_test.exs:42

  1) test relates to actor via has_many and with an aggregate (AshPostgres.AggregateTest)
     test/aggregate_test.exs:8
     ** (RuntimeError) Could not determined related for `exists/2` expression.

     Context Resource: %{aggregates: %{count_of_comments: #count<comments from #Ash.Query<resource: AshPostgres.Test.Comment>>}, calculations: %{}, data_layer: AshPostgres.DataLayer, public?: false, relationship_path: [], resource: AshPostgres.Test.Post, root_resource: AshPostgres.Test.Post}
     Context Relationship Path: []
     At Path: []
     Path: [:post, :organization, :users]
     Related: nil
     Expression: exists(post.organization.users, [id: "236f08bc-6a3a-4a78-9911-2c24189dafac"])

     code: |> Api.read_one!()
     stacktrace:
       (ash 2.5.12) lib/ash/filter/filter.ex:2121: Ash.Filter.add_expression_part/3
       (ash 2.5.12) lib/ash/filter/filter.ex:2037: anonymous fn/3 in Ash.Filter.parse_expression/2
       (elixir 1.14.2) lib/enum.ex:4751: Enumerable.List.reduce/3
       (elixir 1.14.2) lib/enum.ex:2514: Enum.reduce_while/3
       (ash 2.5.12) lib/ash/filter/filter.ex:295: Ash.Filter.parse/5
       (ash 2.5.12) lib/ash/filter/filter.ex:995: Ash.Filter.add_to_filter/6
       (ash 2.5.12) lib/ash/query/query.ex:1797: Ash.Query.do_filter/2
       (elixir 1.14.2) lib/map.ex:883: Map.update!/3
       (ash 2.5.12) lib/ash/engine/request.ex:650: Ash.Engine.Request.apply_filter/4
       (ash 2.5.12) lib/ash/engine/request.ex:557: Ash.Engine.Request.do_strict_check/3
       (ash 2.5.12) lib/ash/engine/request.ex:518: anonymous fn/2 in Ash.Engine.Request.strict_check/2
       (elixir 1.14.2) lib/enum.ex:4751: Enumerable.List.reduce/3
       (elixir 1.14.2) lib/enum.ex:2514: Enum.reduce_while/3
       (ash 2.5.12) lib/ash/engine/request.ex:255: Ash.Engine.Request.do_next/1
       (ash 2.5.12) lib/ash/engine/request.ex:211: Ash.Engine.Request.next/1
       (ash 2.5.12) lib/ash/engine/engine.ex:650: Ash.Engine.advance_request/2
       (ash 2.5.12) lib/ash/engine/engine.ex:556: Ash.Engine.fully_advance_request/2
       (ash 2.5.12) lib/ash/engine/engine.ex:497: Ash.Engine.do_run_iteration/2
       (elixir 1.14.2) lib/enum.ex:2468: Enum."-reduce/3-lists^foldl/2-0-"/3
       (ash 2.5.12) lib/ash/engine/engine.ex:257: Ash.Engine.run_to_completion/1
       (ash 2.5.12) lib/ash/engine/engine.ex:202: Ash.Engine.do_run/2
       (ash 2.5.12) lib/ash/engine/engine.ex:141: Ash.Engine.run/2
       (ash 2.5.12) lib/ash/actions/read.ex:170: Ash.Actions.Read.do_run/3
       (ash 2.5.12) lib/ash/actions/read.ex:90: Ash.Actions.Read.run/3
       (ash 2.5.12) lib/ash/api/api.ex:1005: Ash.Api.read_one/3
       (ash 2.5.12) lib/ash/api/api.ex:998: Ash.Api.read_one!/3
       test/aggregate_test.exs:43: (test)
This commit is contained in:
Alan Heywood 2023-01-30 16:05:52 +10:00
parent 42ec9cf46a
commit 1dbd7f619d
2 changed files with 11 additions and 4 deletions
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3
test/aggregate_test.exs
View file

@ -32,8 +32,6 @@ defmodule AshPostgres.AggregateTest do
|> Ash.Query.filter(id == ^post.id)
|> Api.read_one!(actor: user)
# The policy works fine in this case and we can read the post,
# since the post and the actor are in the same org
assert read_post.id == post.id
read_post =
@ -42,7 +40,6 @@ defmodule AshPostgres.AggregateTest do
|> Ash.Query.load(:count_of_comments)
|> Api.read_one!(actor: user)
# Loading the :count_of_comments aggregate produces the error
assert read_post.count_of_comments == 1
end

12
test/support/resources/comment.ex
View file

@ -1,7 +1,17 @@
defmodule AshPostgres.Test.Comment do
@moduledoc false
use Ash.Resource,
data_layer: AshPostgres.DataLayer
data_layer: AshPostgres.DataLayer,
authorizers: [
Ash.Policy.Authorizer
]
policies do
bypass action_type(:read) do
# Check that the comment is in the same org (via post) as actor
authorize_if(relates_to_actor_via([:post, :organization, :users]))
end
end
postgres do
table "comments"