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3.27.4
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3.27.1
3.27.0
3.26.0
3.25.2
3.25.1
3.25.0
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3.24.7
3.24.6
3.24.5
3.24.4
3.24.3
3.24.2
3.24.1
3.24.0
3.23.1
3.23.0
3.22.2
3.22.1
3.22.0
3.21.3
3.21.2
3.21.1
3.21.0
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3.19.3
3.19.2
3.19.1
3.19.0
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3.17.1
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3.16.0
3.15.0
3.14.1
3.14.0
retired
3.13.2
3.13.1
3.13.0
3.12.0
3.11.3
3.11.2
3.11.1
3.11.0
3.10.1
3.10.0
3.9.0
3.8.0
3.7.6
3.7.5
3.7.4
3.7.3
3.7.2
3.7.1
3.7.0
retired
3.6.3
retired
3.6.2
3.6.1
3.6.0
3.5.43
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2.21.15
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2.21.12
2.21.11
2.21.10
2.21.9
2.21.8
2.21.7
2.21.6
2.21.5
2.21.4
2.21.3
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2.21.1
2.21.0
2.20.3
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2.20.1
2.20.0
2.19.14
2.19.13
2.19.12
2.19.11
2.19.10
2.19.9
2.19.8
2.19.7
2.19.6
2.19.5
2.19.4
2.19.3
retired
2.19.2
retired
2.19.1
retired
2.19.0
retired
2.18.2
2.18.1
2.18.0
2.17.24
2.17.23
2.17.22
2.17.21
2.17.20
2.17.19
2.17.18
2.17.17
2.17.16
2.17.15
2.17.14
2.17.13
2.17.12
2.17.11
2.17.10
2.17.9
2.17.8
2.17.7
2.17.6
2.17.5
2.17.4
2.17.3
2.17.2
2.17.1
2.17.0
2.16.1
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2.15.20
2.15.19
2.15.18
2.15.17
2.15.16
2.15.15
2.15.14
2.15.13
2.15.12
2.15.11
2.15.10
2.15.9
2.15.8
2.15.7
2.15.6
2.15.5
2.15.4
2.15.2
2.15.1
2.15.0
2.14.21
2.14.20
2.14.19
2.14.18
2.14.17
2.14.16
2.14.15
2.14.14
2.14.13
2.14.12
2.14.11
2.14.10
2.14.9
2.14.8
2.14.7
2.14.6
2.14.5
2.14.4
2.14.3
2.14.2
2.14.1
2.14.0
2.13.4
retired
2.13.3
2.13.2
2.13.1
2.13.0
2.12.1
2.12.0
2.11.11
2.11.10
2.11.9
2.11.8
2.11.7
2.11.6
2.11.5
2.11.4
2.11.3
2.11.2
2.11.1
2.11.0
2.11.0-rc.3
2.11.0-rc.2
2.11.0-rc.1
2.11.0-rc.0
2.10.2
2.10.1
2.10.0
2.9.29
2.9.28
2.9.27
2.9.26
2.9.25
2.9.24
2.9.23
2.9.22
2.9.21
2.9.20
2.9.19
2.9.18
2.9.17
2.9.16
2.9.15
2.9.14
2.9.13
2.9.12
2.9.11
2.9.10
2.9.9
2.9.8
2.9.7
2.9.6
2.9.5
2.9.4
2.9.3
2.9.2
2.9.1
2.9.0
2.8.1
2.8.0
2.7.1
2.7.0
2.6.31
2.6.30
2.6.29
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2.6.27
2.6.26
2.6.25
2.6.24
2.6.23
2.6.22
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1.52.0-rc.22
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1.52.0-rc.19
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1.51.0
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1.48.0-rc.21
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1.48.0-rc.3
1.48.0-rc.2
1.48.0-rc.1
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1.46.10
1.46.9
1.46.8
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1.44.9
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1.44.6
1.44.5
1.44.4
1.44.3
1.44.2
1.44.1
1.44.0
1.43.12
1.43.11
1.43.10
1.43.9
1.43.8
1.43.7
1.43.6
1.43.5
1.43.4
1.43.3
1.43.2
1.43.1
1.43.0
1.42.0
1.41.12
1.41.11
1.41.10
1.41.9
1.41.8
1.41.7
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1.41.5
1.41.4
1.41.3
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1.41.1
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1.40.0
1.39.7
1.39.6
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1.39.2
1.39.1
1.39.0
1.38.0
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1.37.1
1.37.0
1.36.22
1.36.21
1.36.19
1.36.18
1.36.17
1.36.16
1.36.15
1.36.14
1.36.13
1.36.12
1.36.11
1.36.10
1.36.9
1.36.8
1.36.7
1.36.6
1.36.5
1.36.4
1.36.3
1.36.2
1.36.0
1.35.1
1.35.0
1.34.9
1.34.8
1.34.7
1.34.6
1.34.5
1.34.4
1.34.3
1.34.2
1.34.1
1.34.0
1.33.0
1.32.2
1.32.1
1.32.0
1.31.1
1.31.0
1.30.2
1.30.1
1.29.0-rc1
1.29.0-rc0
1.28.1
1.28.0
1.27.1
1.27.0
1.26.13
1.26.12
1.26.11
1.26.10
1.26.9
1.26.8
1.26.7
1.26.6
1.26.5
1.26.4
1.26.2
1.26.1
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1.25.8
1.25.7
1.25.6
1.25.5
1.25.4
1.25.3
1.25.2
1.25.1
1.25.0
1.24.2
1.24.1
1.24.0
1.23.3
1.23.2
1.23.1
1.23.0
1.22.1
1.22.0
1.20.1
1.20.0
1.19.1
1.19.0
1.18.1
1.18.0
1.17.1
1.17.0
1.16.2
1.15.1
1.15.0
1.14.0
1.13.4
1.13.3
1.13.2
1.13.1
1.13.0
1.12.0
1.11.1
1.11.0
1.10.0
1.9.0
1.8.0
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1.6.8
1.6.7
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1.6.5
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1.6.1
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1.5.1
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1.3.1
1.3.0
1.2.1
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1.1.3
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1.0.3
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A declarative, extensible framework for building Elixir applications.
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lib/ash/policy/check/relates_to_actor_via.ex
# SPDX-FileCopyrightText: 2019 ash contributors <https://github.com/ash-project/ash/graphs/contributors>
#
# SPDX-License-Identifier: MIT
defmodule Ash.Policy.Check.RelatesToActorVia do
@moduledoc "This check passes if the data relates to the actor via the specified relationship or path of relationships."
use Ash.Policy.FilterCheck
@impl true
def describe(opts) do
path = Enum.join(opts[:relationship_path], ".")
"record.#{path} == actor"
end
@impl true
def filter(actor, context, opts) do
opts = Keyword.update!(opts, :relationship_path, &List.wrap/1)
actor_field = Keyword.get(opts, :field)
{last_relationship, to_many?} = relationship_info(context.resource, opts[:relationship_path])
pkey =
last_relationship.destination
|> Ash.Resource.Info.primary_key()
if to_many? || opts[:ash_field_policy?] do
expr(
exists(
^opts[:relationship_path],
^Enum.map(pkey, fn pkey_field ->
{pkey_field, {:_actor, resolve_actor_path(actor, actor_field, pkey_field)}}
end)
)
)
else
Enum.reduce(pkey, nil, fn pkey_field, expr ->
actor_path = resolve_actor_path(actor, actor_field, pkey_field)
if expr do
expr(^expr and ^ref(opts[:relationship_path], pkey_field) == ^actor(actor_path))
else
expr(^ref(opts[:relationship_path], pkey_field) == ^actor(actor_path))
end
end)
end
end
defp resolve_actor_path(actor, nil, pkey_field) do
validate_actor_field_loaded!(actor, [pkey_field])
pkey_field
end
defp resolve_actor_path(actor, actor_field, pkey_field) do
cond do
is_nil(actor) ->
[actor_field, pkey_field]
is_struct(actor) and Ash.Resource.Info.resource?(actor.__struct__) ->
case Ash.Resource.Info.relationship(actor.__struct__, actor_field) do
%{type: :belongs_to, source_attribute: source_attr, destination_attribute: dest_attr}
when dest_attr == pkey_field ->
# For belongs_to, prefer the source_attribute, but fall back to relationship path
case Map.get(actor, source_attr) do
%Ash.NotLoaded{} ->
# Source attribute not loaded, try the relationship path
# Hint towards loading the source_attribute as the more optimal choice
validate_actor_field_loaded!(actor, [actor_field, pkey_field], source_attr)
[actor_field, pkey_field]
_ ->
source_attr
end
rel when not is_nil(rel) ->
# Other relationship types - need to traverse the relationship
validate_actor_field_loaded!(actor, [actor_field, pkey_field])
[actor_field, pkey_field]
nil ->
# No relationship found, might be a direct field access
validate_actor_field_loaded!(actor, [actor_field, pkey_field])
[actor_field, pkey_field]
end
true ->
# Not an Ash resource, validate and use path
validate_actor_field_loaded!(actor, [actor_field, pkey_field])
[actor_field, pkey_field]
end
end
defp validate_actor_field_loaded!(actor, path, optimal_field \\ nil) do
case actor_get_path(actor, path) do
%Ash.NotLoaded{} ->
hint =
if optimal_field do
"\n\nHint: Loading `#{inspect(optimal_field)}` is more optimal than loading the full relationship."
else
""
end
raise ArgumentError, """
Actor field is not loaded: #{inspect(path)}
Actor: #{inspect(actor)}
Ensure the field is loaded on the actor before using it in a `relates_to_actor_via` check.#{hint}
"""
_ ->
:ok
end
end
defp actor_get_path(nil, _), do: nil
defp actor_get_path(%Ash.NotLoaded{} = not_loaded, _), do: not_loaded
defp actor_get_path(map, [key]) when is_map(map), do: Map.get(map, key)
defp actor_get_path(map, [key | rest]) when is_map(map),
do: actor_get_path(Map.get(map, key), rest)
defp actor_get_path(_, _), do: nil
@impl true
def reject(actor, context, opts) do
opts = Keyword.update!(opts, :relationship_path, &List.wrap/1)
{last_relationship, to_many?} = relationship_info(context.resource, opts[:relationship_path])
pkey =
last_relationship.destination
|> Ash.Resource.Info.primary_key()
if to_many? do
Ash.Expr.expr(not (^filter(actor, context, opts)))
else
expr =
Enum.reduce(pkey, nil, fn field, expr ->
if expr do
Ash.Expr.expr(^expr and is_nil(^ref(opts[:relationship_path], field)))
else
Ash.Expr.expr(is_nil(^ref(opts[:relationship_path], field)))
end
end)
Ash.Expr.expr(not (^filter(actor, context, opts)) or ^expr)
end
end
defp relationship_info(resource, path, to_many? \\ false)
defp relationship_info(resource, [rel_key], to_many?) do
rel = Ash.Resource.Info.relationship(resource, rel_key)
raise_if_nil(rel, rel_key, resource)
{rel, to_many? || rel.cardinality == :many}
end
defp relationship_info(resource, [rel_key | rest], to_many?) do
rel = Ash.Resource.Info.relationship(resource, rel_key)
raise_if_nil(rel, rel_key, resource)
relationship_info(rel.destination, rest, to_many? || rel.cardinality == :many)
end
defp raise_if_nil(nil, rel_key, resource) do
raise "No such relationship ':#{rel_key}' for #{resource}, required in `relates_to_actor` check"
end
defp raise_if_nil(_, _, _) do
:ok
end
end