ash-project
Policies should have an `applicable_action_types` callback
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Is your feature request related to a problem? Please describe.
A lot of policies don't make sense to run on create actions, because they test against the original record. eg. relates_to_actor_via. At the moment this will either raise a runtime error, or silently fail.
Describe the solution you'd like
If each built-in policy could define which action types it worked on, we could emit a compile-time warning if people write policies that don't make a lot of sense or will never pass on a create action.
Describe alternatives you've considered
No response
Additional context
No response
The warning would likely not be able to be compile time, but it could at least be a more intelligent warning. With that said, I'm not confident that we would want to have applicable_action_types? but some kind of more generic validate callback, i.e
def validate(authorizer, opts, context) do
if authorization.action.type == :create do
:ok
else
{:error, "can only work on create actions"}
end
end
