Translator returns an empty string if an empty map or nil is passed

README.md

@@ -486,7 +486,7 @@ Add `i18n_helpers` for Elixir as a dependency in your `mix.exs` file:
 ```elixir
 def deps do
  [
- {:i18n_helpers, "~> 0.7.1"}
+ {:i18n_helpers, "~> 0.8.0"}
  ]
 end
 ```

lib/ecto/translator.ex

@@ -19,7 +19,7 @@ defmodule I18nHelpers.Ecto.Translator do
  4. Repeat step 1. for each associated Ecto struct.
  """
  @spec translate(list | struct | map, String.t() | atom, keyword) ::
- list | struct | String.t() | nil
+ list | struct | String.t()
  def translate(data_structure, locale \\ Gettext.get_locale(), opts \\ [])
 
  def translate([], _locale, _opts), do: []
@@ -62,7 +62,9 @@ defmodule I18nHelpers.Ecto.Translator do
  entity
  end
 
- def translate(map, _locale, _opts) when map == %{}, do: nil
+ def translate(nil, _locale, _opts), do: ""
+
+ def translate(map, _locale, _opts) when map == %{}, do: ""
 
  def translate(%{} = translations_map, locale, opts) do
  locale = to_string(locale)

mix.exs

@@ -1,7 +1,7 @@
 defmodule I18nHelpers.MixProject do
  use Mix.Project
 
- @version "0.7.1"
+ @version "0.8.0"
 
  def project do
  [

test/ecto/translator_test.exs

@@ -78,9 +78,10 @@ defmodule I18nHelpers.Ecto.TranslatorTest do
  end
  end
 
- test "get translation from empty map" do
- assert Translator.translate(%{}) == nil
- assert Translator.translate(%{}, "fr") == nil
+ test "get translation from empty map or nil" do
+ assert Translator.translate(%{}) == ""
+ assert Translator.translate(%{}, "fr") == ""
+ assert Translator.translate(nil) == ""
  end
 
  test "get translation from map, given key is present" do