Add long urls for Artikel

lib/outlook/translations/translation.ex

@@ -4,7 +4,7 @@ defmodule Outlook.Translations.Translation do
 
   alias Outlook.Accounts.User
   alias Outlook.Articles.Article
-  alias Outlook.Translations.TranslationUnitsMap
+  alias Outlook.Translations.{TranslationUnitsMap,Translation}
 
   schema "translations" do
     field :content, TranslationUnitsMap
@@ -32,4 +32,30 @@ defmodule Outlook.Translations.Translation do
         name: :article_id_lang_unique_index)
     |> foreign_key_constraint(:article_id)
   end
+
+  def translate_unicode(str) do
+    mapping = %{"Ä" => "Ae",
+                "Ö" => "Oe",
+                "Ü" => "Ue",
+                "ä" => "ae",
+                "ö" => "oe",
+                "ü" => "ue",
+                "ß" => "ss"}
+    {:ok, re} = "[#{Map.keys(mapping) |> Enum.join}]" |> Regex.compile("u")
+    Regex.replace(re, str, fn(c) -> mapping[c] end)
+  end
+
+  def spit_title(title) do
+    title
+    |> translate_unicode()
+    # |> String.replace(~r/[^-0-9A-Za-z ]/u, "_")
+    |> String.replace(~r/[^\w\s-]/u, "")
+    |> String.replace(~r/(\s|-)+/u, "-")
+  end
+
+  defimpl Phoenix.Param, for: Translation do
+    def to_param(%{id: id, title: title}) do
+      "#{Translation.spit_title(title)}--#{Integer.to_string(id, 36) |> String.downcase()}"
+    end
+  end
 end