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20 lines
525 B
Elixir
20 lines
525 B
Elixir
defmodule Ash.Resource.Calculation.Concat do
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@moduledoc false
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use Ash.Calculation, type: :string
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def init(opts) do
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if opts[:keys] && is_list(opts[:keys]) && Enum.all?(opts[:keys], &is_atom/1) do
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{:ok, opts}
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else
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{:error, "Expected a `keys` option for which keys to concat"}
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end
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end
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def calculate(records, opts, _) do
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Enum.map(records, fn record ->
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Enum.map_join(opts[:keys], opts[:separator] || "", fn key ->
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to_string(Map.get(record, key))
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end)
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end)
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end
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end
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