Add embedded schema for Artikel

lib/outlook/public.ex

@@ -0,0 +1,64 @@
+defmodule Outlook.Public do
+@moduledoc """
+This should replace Outlook.Artikel and Outlook.Autoren for
+both of which embedded schemas should be created, for Artikel the schema should
+implement to_param protocol (no more needed for Outlook.Translations.Translation then).
+"""
+
+  alias Outlook.Translations.Translation
+  alias Outlook.Articles.Article
+  alias Outlook.Authors.Author
+  alias Outlook.Public.Artikel
+
+  import Ecto.Query, warn: false
+  alias Outlook.Repo
+
+  def list_artikel(language \\ "DE") do
+    q = from t in Translation,
+      join: a in Article, on: t.article_id == a.id,
+      join: au in Author, on: a.author_id == au.id,
+      select: [
+        title: t.title,
+        date: t.date,
+        teaser: t.teaser,
+        id: t.id,
+        date_org: a.date,
+        autor_name: au.name,
+      ],
+      where: t.public == true and t.language == ^language,
+      order_by: [desc: t.date]
+    Repo.all(q)
+    |> Enum.map(fn rec -> Enum.into(rec, %{}) end)
+    |> Enum.map(fn map -> struct(Artikel, map) end)
+  end
+
+  def get_artikel!(artikel) when is_struct(artikel), do: get_artikel!(artikel.id)
+  def get_artikel!(id) do
+    q = from t in Translation,
+      join: a in Article, on: t.article_id == a.id,
+      join: au in Author, on: a.author_id == au.id,
+      select: [
+        title: t.title,
+        date: t.date,
+        public_content: t.public_content,
+        title_org: a.title,
+        url_org: a.url,
+        date_org: a.date,
+        author: au.name,
+        author_id: au.id
+      ],
+      where: t.id == ^id and t.public == true
+    case Repo.one(q) do
+      nil     -> {:error, "Artikel does not exist, or isn't public."}
+      artikel -> {:ok, struct(Artikel, artikel |> Enum.into(%{}))}
+    end
+  end
+
+  def get_artikel_by_tid(tid) do
+    tid
+    |> String.split(~r/--(?=[0-9A-Za-z])/)
+    |> List.last()
+    |> String.to_integer(36)
+    |> get_artikel!()
+  end
+end

lib/outlook/public/artikel.ex

@@ -0,0 +1,43 @@
+defmodule Outlook.Public.Artikel do
+  use Ecto.Schema
+
+  alias Outlook.Public.Artikel
+
+  embedded_schema do
+    field :title, :string
+    field :date, :utc_datetime
+    field :public_content, :string
+    field :title_org, :string
+    field :url_org, :string
+    field :date_org, :utc_datetime
+    field :autor_name, :string
+    field :author_id, :integer
+    field :teaser, :string
+    # field :autor, Autor
+  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/[^\w\s-]/u, "")
+    |> String.replace(~r/(\s|-)+/u, "-")
+  end
+
+  defimpl Phoenix.Param, for: Artikel do
+    def to_param(%{id: id, title: title}) do
+      "#{Artikel.spit_title(title)}--#{Integer.to_string(id, 36) |> String.downcase()}"
+    end
+  end
+end

lib/outlook_web/components/public_components.ex

@@ -23,14 +23,14 @@ defmodule OutlookWeb.PublicComponents do
   end
 
   attr :artikel, :any, required: true
-  attr :show_author, :boolean, default: true
+  attr :show_autor, :boolean, default: true
 
   def artikel(assigns) do
     ~H"""
     <.link navigate={~p"/artikel/#{@artikel}"}>
       <div class="my-2 px-2 rounded border-2 border-solid border-gray-300 dark:border-stone-800">
         <h4 class="font-bold  text-stone-800 dark:text-stone-300 py-2"><%= @artikel.title %></h4>
-        <div :if={@show_author}><small><%= @artikel.article.author.name %></small></div>
+        <div :if={@show_autor}><small><%= @artikel.autor_name %></small></div>
         <div><small><%= @artikel.date |> Calendar.strftime("%d.%m.%Y") %></small></div>
         <div><%= @artikel.teaser |> tidy_raw %></div>
       </div>

lib/outlook_web/controllers/artikel_controller.ex

@@ -1,15 +1,15 @@
 defmodule OutlookWeb.ArtikelController do
   use OutlookWeb, :controller
 
-  alias Outlook.Artikel
+  alias Outlook.Public
 
   def index(conn, _params) do
-    artikel = Artikel.list_artikel()
+    artikel = Public.list_artikel()
     render(conn, :index, artikel: artikel, page_title: "Artikel")
   end
 
   def show(conn, %{"tid" => tid} = params) do
-    case Artikel.get_artikel_by_tid(tid) do
+    case Public.get_artikel_by_tid(tid) do
       {:ok, artikel} -> render(conn, :show, artikel: artikel, page_title: artikel.title)
       {:error, message} -> conn
         |> put_status(404)