Add site-locale setting

frontend/src/metabase/admin/settings/selectors.js

@@ -51,6 +51,16 @@ const SECTIONS = [
                 note: "Not all databases support timezones, in which case this setting won't take effect.",
                 allowValueCollection: true
             },
+            {
+                key: "site-locale",
+                display_name: "Language",
+                type: "select",
+                options: [
+                    { name: "Default", value: "" },
+                    ...MetabaseSettings.get("available_locales").map(([value, name]) => ({ name, value }))
+                ],
+                placeholder: "Select a language"
+            },
             {
                 key: "anon-tracking-enabled",
                 display_name: "Anonymous Tracking",

src/metabase/core.clj

@@ -21,7 +21,10 @@
              [task :as task]
              [util :as u]]
             [metabase.core.initialization-status :as init-status]
-            [metabase.models.user :refer [User]]
+            [metabase.models
+             [user :refer [User]]
+             [setting :as setting]]
+            [puppetlabs.i18n.core :as i18n :refer [trs trsn tru trun]]
             [ring.adapter.jetty :as ring-jetty]
             [ring.middleware
              [cookies :refer [wrap-cookies]]
@@ -31,7 +34,16 @@
              [params :refer [wrap-params]]
              [session :refer [wrap-session]]]
             [toucan.db :as db])
-  (:import org.eclipse.jetty.server.Server))
+  (:import java.util.Locale
+           org.eclipse.jetty.server.Server))
+
+;; HACK: replace this with setting event listener
+(defn sync-locale []
+  (let [site-locale    (setting/get :site-locale)
+        current-locale (.toLanguageTag (Locale/getDefault))]
+    (log/info (trs "Hello World!"))
+    (if (and site-locale (not= current-locale site-locale))
+      (Locale/setDefault (Locale/forLanguageTag site-locale)))))
 
 ;;; CONFIG
 
@@ -133,6 +145,10 @@
     ;; start the metabot thread
     (metabot/start-metabot!))
 
+  (sync-locale)
+  (future (while true (do (Thread/sleep 1000) (sync-locale))))
+  ; (java.util.Locale/setDefault (new java.util.Locale "de"))
+
   (init-status/set-complete!)
   (log/info "Metabase Initialization COMPLETE"))
 

src/metabase/public_settings.clj

@@ -7,8 +7,10 @@
              [common :as common]
              [setting :as setting :refer [defsetting]]]
             [metabase.util.password :as password]
+            [puppetlabs.i18n.core :refer [available-locales]]
             [toucan.db :as db])
-  (:import java.util.TimeZone))
+  (:import java.util.Locale
+           java.util.TimeZone))
 
 (defsetting check-for-updates
   "Identify when new versions of Metabase are available."
@@ -33,6 +35,10 @@
                                              (cond->> (s/replace new-value #"/$" "")
                                                (not (s/starts-with? new-value "http")) (str "http://"))))))
 
+(defsetting site-locale
+  "The default language for this Metabase instance. This only applies to emails, Pulses, etc. Users' browsers will specify the language used in the user interface."
+  :type :string)
+
 (defsetting admin-email
   "The email address users should be referred to if they encounter a problem.")
 
@@ -142,6 +148,7 @@
    :google_auth_client_id (setting/get :google-auth-client-id)
    :has_sample_dataset    (db/exists? 'Database, :is_sample true)
    :ldap_configured       ((resolve 'metabase.integrations.ldap/ldap-configured?))
+   :available_locales     (vec (map (fn [locale] [locale (.getDisplayName (Locale/forLanguageTag locale))]) (available-locales)))
    :map_tile_server_url   (map-tile-server-url)
    :password_complexity   password/active-password-complexity
    :public_sharing        (enable-public-sharing)