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ja_serializer

0.8.1
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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 attribute.ex
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lib/ja_serializer/builder/attribute.ex 

defmodule JaSerializer.Builder.Attribute do

  @moduledoc false



  defstruct [:key, :value]



  def build(context) do

    context

    |> fields_to_include

    |> Enum.map(&do_build/1)

  end



  def fields_to_include(%{data: data, serializer: serializer, conn: conn} = context) do

    attrs = apply(serializer,:attributes, [data, conn])

    field_map = context[:opts][:fields] || %{}

    attrs_to_include = Map.get(field_map, serializer.type)



    cond do

      attrs_to_include ->

        include_list = String.split(attrs_to_include, ",") |> Enum.map(&String.to_atom/1)

        Enum.filter attrs, fn({key, _value}) -> key in include_list end

      true ->

        attrs

    end

  end



  def do_build({key, value}), do: %__MODULE__{key: key, value: value}

end