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42 lines
1.2 KiB
Markdown
42 lines
1.2 KiB
Markdown
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### Un-archiving
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At the moment, there is no way to unarchive an entry with a simple action on that resource. However, if you define a simple resource that uses the same storage under the hood (e.g same database table), but does *not* use the archival extension. You could then fabricate unarchival with something like this (this is not vetted, it is a pseudo-code example):
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```elixir
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# on the archived resource
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# we model it as a create because there is no input record
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create :unarchive do
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manual? true
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argument :id, :uuid do
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allow_nil? false
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end
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change Unarchive
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end
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```
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with an `Unarchive` change like this
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```elixir
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def change(changeset, _, _) do
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# no data yet, so match on result being `nil`
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Ash.Changeset.after_action(changeset, fn changeset, nil ->
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id = Ash.Changeset.get_argument(changeset, :id)
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ResourceWithoutArchival
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|> Ash.Query.filter(id == ^id)
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|> Api.read_one()
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|> case do
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{:ok, nil} ->
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# not found error
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{:ok, found} ->
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# unarchive
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found
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|> Ash.Changeset.for_update(:update, %{archived_at: nil})
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|> Api.update!()
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{:ok, Api.get!(changeset.resource, id)}
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end
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end)
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end
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```
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