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1.2 KiB
1.2 KiB
Un-archiving
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):
# on the archived resource
# we model it as a create because there is no input record
create :unarchive do
manual? true
argument :id, :uuid do
allow_nil? false
end
change Unarchive
end
with an Unarchive
change like this
def change(changeset, _, _) do
# no data yet, so match on result being `nil`
Ash.Changeset.after_action(changeset, fn changeset, nil ->
id = Ash.Changeset.get_argument(changeset, :id)
ResourceWithoutArchival
|> Ash.Query.filter(id == ^id)
|> Ash.read_one()
|> case do
{:ok, nil} ->
# not found error
{:ok, found} ->
# unarchive
found
|> Ash.Changeset.for_update(:update, %{archived_at: nil})
|> Ash.update!()
{:ok, Ash.get!(changeset.resource, id)}
end
end)
end