Moritz
95472424b1
UnrelateUserWhenArgumentNil used User :update which only accepts :email. Switch to :update_user with member: nil so manage_relationship clears member_id.
50 lines
1.7 KiB
Elixir
50 lines
1.7 KiB
Elixir
defmodule Mv.Membership.Member.Changes.UnrelateUserWhenArgumentNil do
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@moduledoc """
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When :user argument is present and nil/empty on update_member, unrelate the current user.
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With on_missing: :ignore, manage_relationship does not unrelate when input is nil/[].
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This change handles explicit unlink (user: nil or user: %{}) by updating the linked
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User to set member_id = nil. Only runs when the argument key is present (policy
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ForbidMemberUserLinkUnlessAdmin ensures only admins can pass :user).
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"""
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use Ash.Resource.Change
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@spec change(Ash.Changeset.t(), keyword(), Ash.Resource.Change.context()) :: Ash.Changeset.t()
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def change(changeset, _opts, _context) do
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if unlink_requested?(changeset) do
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unrelate_current_user(changeset)
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else
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changeset
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end
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end
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defp unlink_requested?(changeset) do
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args = changeset.arguments || %{}
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if Map.has_key?(args, :user) or Map.has_key?(args, "user") do
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user_arg = Ash.Changeset.get_argument(changeset, :user)
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user_arg == nil or (is_map(user_arg) and map_size(user_arg) == 0)
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else
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false
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end
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end
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defp unrelate_current_user(changeset) do
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member = changeset.data
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actor = Map.get(changeset.context || %{}, :actor)
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case Ash.load(member, :user, domain: Mv.Membership, authorize?: false) do
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{:ok, %{user: user}} when not is_nil(user) ->
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# User's :update action only accepts [:email]; use :update_user so
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# manage_relationship(:member, ..., on_missing: :unrelate) runs and clears member_id.
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user
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|> Ash.Changeset.for_update(:update_user, %{member: nil}, domain: Mv.Accounts)
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|> Ash.update(domain: Mv.Accounts, actor: actor, authorize?: false)
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changeset
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_ ->
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changeset
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end
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end
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end
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