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filterable

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Filtering from incoming params in Elixir/Ecto/Phoenix with easy to use DSL.

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filterable lib filterable utils.ex
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lib/filterable/utils.ex 

defmodule Filterable.Utils do

  def to_atoms_map([]), do: []

  def to_atoms_map(%{__struct__: _} = value), do: value

  def to_atoms_map(value) do

    if is_map(value) || Keyword.keyword?(value) do

      Enum.into value, %{}, fn ({k, v}) ->

        {if(is_bitstring(k), do: String.to_atom(k), else: k), to_atoms_map(v)}

      end

    else

      value

    end

  end



  def presence(value) when value in ["", [], {}, %{}] do

    nil

  end

  def presence(value) do

    value

  end



  def get_indifferent(map, key, default \\ nil)

  def get_indifferent(map, key, default) when is_nil(key) or is_nil(map) do

    default

  end

  def get_indifferent(map, key, default) when is_bitstring(key) do

    Map.get(map, key) || Map.get(map, String.to_atom(key), default)

  end

  def get_indifferent(map, key, default) when is_atom(key) do

    Map.get(map, key) || Map.get(map, Atom.to_string(key), default)

  end

end