Sets the Cldr and/or Gettext locales derived from the accept-language header, a query parameter, a url parameter, a body parameter or the session.

Options

• :apps - list of apps for which to set locale. Valid apps are :cldr and :gettext. The default is :cldr.

• :from - where in the request to look for the locale. The default is [:session, :accept_language]. The valid options are:

  • :accept_language will parse the accept-language header and finds the best matched configured locale
  • :path will look for a locale by examining conn.path_params
  • :query will look for a locale by examining conn.query_params
  • :body will look for a locale by examining conn.body_params
  • :session will look for a locale in the session

• :default - the default locale to set if no locale is found by other configured methods. It can be a string like “en” or a Cldr.LanguageTag.t struct. The default is Cldr.default_locale()

• :gettext - the name of the Gettext module upon which the locale should be set

• :session_key - defines the key used to look for the locale in the session. The default is “locale”.

If a locale is found then conn.private[:cldr_locale] is also set. It can be retrieved with Cldr.Plug.SetLocale.get_cldr_locale/1.

Example

plug Cldr.Plug.SetLocale,
  apps:    [:cldr, :gettext],
  from:    [:accept_language, :path, :query, :body],
  param:   "locale",
  default: Cldr.default_locale,
  gettext: GetTextModule,
  session_key: "cldr_locale"