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ash_json_api
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The JSON:API extension for the Ash Framework.
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Files
lib/ash_json_api/includes/parser.ex
defmodule AshJsonApi.Includes.Parser do
@moduledoc false
defstruct [:allowed, :disallowed]
def parse_and_validate_includes(resource, %{"include" => include_string}) do
allowed = allowed_preloads(resource)
include_string
|> String.split(",")
|> Stream.map(&String.split(&1, "."))
|> Stream.map(fn include ->
{include, get_in(allowed, include) || false}
end)
|> Enum.reduce(%__MODULE__{allowed: [], disallowed: []}, fn {include, allowed?}, acc ->
if allowed? do
Map.update!(acc, :allowed, fn list -> [include | list] end)
else
Map.update!(acc, :disallowed, fn list -> [include | list] end)
end
end)
end
def parse_and_validate_includes(_, _), do: %__MODULE__{allowed: [], disallowed: []}
defp allowed_preloads(resource) do
resource
|> AshJsonApi.Resource.Info.includes()
|> to_nested_map()
end
defp to_nested_map(list) when is_list(list) do
list
|> Enum.map(fn
{key, value} -> {to_string(key), to_nested_map(value)}
value -> {to_string(value), to_nested_map(value)}
end)
|> Enum.into(%{})
end
defp to_nested_map(true), do: true
defp to_nested_map(value), do: %{value => true}
end