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ja_serializer

0.6.3
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A serialization library implementing the jsonapi.org 1.0 spec suitable for use building JSON APIs in Phoenix and any other Plug based framework or app.

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ja_serializer lib ja_serializer builder resource_identifier.ex
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lib/ja_serializer/builder/resource_identifier.ex 

defmodule JaSerializer.Builder.ResourceIdentifier do

  @moduledoc false



  defstruct [:id, :type, :meta]



  def build(%{serializer: serializer} = context, type, name) do

    serializer

    |> apply(name, [context.model, context.conn])

    |> case do

      [] -> [:empty_relationship]

      nil -> :empty_relationship

      many when is_list(many) -> Enum.map(many, &do_build(&1, type, context))

      one -> do_build(one, type, context)

    end

  end



  defp do_build(model, type, context) do

    %__MODULE__{

      type: type,

      id: find_id(model, context)

    }

  end



  defp find_id(%{} = model, %{resource_serializer: nil}) do

    Map.get(model, :id)

  end



  defp find_id(%{} = model, context = %{resource_serializer: serializer}) do

    apply(serializer, :id, [model, context.conn])

  end



  defp find_id(id, _), do: id

end