Redirect on a default language?

Questions & Help Questions
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7

I like zaljir’s approach! I also just finished doing something like this and used Kip’s ex_cldr_plugs | Hex and ex_cldr_routes | Hex.

I wanted to try to get the user’s accept language header first and default to cldr’s default if not found.
Then I wanted to force all users to have a locale in the route.. then only respect the route’s locale after that.

Router looks like:

  scope "/", MyAppWeb do
    pipe_through :browser

    get "/", PageController, :redirect_to_default_lang

    localize do
      get "/#{locale}", PageController, :home

      live "/#{locale}/videos", VideoLive.Index, :index
      live "/#{locale}/videos/new", VideoLive.Index, :new
      live "/#{locale}/videos/:id/edit", VideoLive.Index, :edit
      live "/#{locale}/videos/:id", VideoLive.Show, :show
      live "/#{locale}/videos/:id/show/edit", VideoLive.Show, :edit
    end

with this in the pipeline:

    plug Cldr.Plug.PutLocale,
      apps: [:cldr, :gettext],
      from: [:route, :query, :path, :accept_language, :session],
      gettext: MyAppWeb.Gettext,
      cldr: MyApp.Cldr

So the plug finds the best language for the user based on route/accept language header, etc.
If the user visits the main page, it hits this redirect controller to get the best language and sends them off to the correct route ie. “/fr”. All navigation links after that expect a locale.

defmodule MyAppWeb.PageController do
  use MyAppWeb, :controller

  def redirect_to_default_lang(conn, _params) do
    redirect(conn, to: "/#{MyApp.Cldr.get_locale().cldr_locale_name}")
  end
end

and this puts the locale in the session:

defmodule MyAppWeb.RestoreLocale do
  def on_mount(:default, _, %{"cldr_locale" => cldr_locale}, socket) do
    MyApp.Cldr.put_locale(cldr_locale)

    Gettext.put_locale(
      MyAppWeb.Gettext,
      Atom.to_string(MyApp.Cldr.get_locale().cldr_locale_name)
    )

    {:cont, socket}
  end

  def on_mount(:default, _params, _session, socket), do: {:cont, socket}
end