Derive can/1 rules from Ash domain resources#4
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Introduces an "Ash spirit" alternative to writing Permit permission rules
by deriving them directly from Ash resource declarations.
New DSL on any resource using the Permit.Ash.Resource extension:
permit do
for_actor %{role: :admin} do
all()
end
for_actor %{id: user_id, role: :owner} do
read()
update(user_id: user_id)
end
end
The Spark transformer generates a __permit_rules__/1 function on each
resource so that Permit.Ash.DomainPermissions can aggregate them:
defmodule MyApp.Permissions do
use Permit.Ash.DomainPermissions,
domain: MyApp.Domain,
actions_module: MyApp.AshActions
end
The generated can/1 iterates all domain resources, calls
__permit_rules__/1 on each, and merges the rules into a
%Permit.Permissions{} struct compatible with Permit.ResolverBase.
The :all sentinel action expands to every group in the actions module.
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dawidsawczuk
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Jun 2, 2026
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Resolves #2.