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ja_serializer

0.1.0
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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 relationship.ex
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lib/ja_serializer/builder/relationship.ex 

defmodule JaSerializer.Builder.Relationship do

  @moduledoc false



  alias JaSerializer.Builder.Link

  alias JaSerializer.Builder.ResourceIdentifier



  defstruct [:name, :links, :data, :meta]



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

    Enum.map serializer.__relations, &(build(&1, context))

  end



  defp build({_type, name, _opts} = definition, context) do

    %__MODULE__{name: name}

    |> add_links(definition, context)

    |> add_data(definition, context)

  end



  defp add_links(relation, {_type, _name, opts}, context) do

    case opts[:link] do

      nil ->  relation

      path -> Map.put(relation, :links, [Link.build(context, :related, path)])

    end

  end



  defp add_data(relation, {_t, name, opts}, context) do

    opts

    |> type_from_opts

    |> case do

      nil  -> relation

      type ->

        Map.put(relation, :data, ResourceIdentifier.build(context, type, name))

    end

  end



  defp type_from_opts(opts) do

    case {opts[:type], opts[:include]} do

      {nil, nil}        -> nil

      {nil, serializer} -> apply(serializer, :__type_key, [])

      {type, _}         -> type

    end

  end

end