FIX: Enabling verbose localization for session didn't work

app/assets/javascripts/discourse/initializers/localization.js.es6

@@ -4,31 +4,21 @@ export default {
   name: 'localization',
   after: 'inject-objects',
 
-  enableVerboseLocalization() {
-    let counter = 0;
-    let keys = {};
-    let t = I18n.t;
 
-    I18n.noFallbacks = true;
+  isVerboseLocalizationEnabled(container) {
+    const siteSettings = container.lookup('site-settings:main');
+    if (siteSettings.verbose_localization) return true;
 
-    I18n.t = I18n.translate = function(scope, value){
-      let current = keys[scope];
-      if (!current) {
-        current = keys[scope] = ++counter;
-        let message = "Translation #" + current + ": " + scope;
-        if (!_.isEmpty(value)) {
-          message += ", parameters: " + JSON.stringify(value);
-        }
-        Em.Logger.info(message);
-      }
-      return t.apply(I18n, [scope, value]) + " (#" + current + ")";
-    };
+    try {
+      return sessionStorage && sessionStorage.getItem("verbose_localization");
+    } catch (e) {
+      return false;
+    }
   },
 
   initialize(container) {
-    const siteSettings = container.lookup('site-settings:main');
-    if (siteSettings.verbose_localization) {
-      this.enableVerboseLocalization();
+    if (this.isVerboseLocalizationEnabled(container)) {
+      I18n.enableVerboseLocalization();
     }
 
     // Merge any overrides into our object

app/assets/javascripts/locales/i18n.js

@@ -292,5 +292,33 @@ I18n.currentLocale = function() {
   return I18n.locale || I18n.defaultLocale;
 };
 
+I18n.enableVerboseLocalization = function() {
+  var counter = 0;
+  var keys = {};
+  var t = I18n.t;
+
+  I18n.noFallbacks = true;
+
+  I18n.t = I18n.translate = function(scope, value){
+    var current = keys[scope];
+    if (!current) {
+      current = keys[scope] = ++counter;
+      var message = "Translation #" + current + ": " + scope;
+      if (!_.isEmpty(value)) {
+        message += ", parameters: " + JSON.stringify(value);
+      }
+      Em.Logger.info(message);
+    }
+    return t.apply(I18n, [scope, value]) + " (#" + current + ")";
+  };
+};
+
+I18n.enableVerboseLocalizationSession = function() {
+  sessionStorage.setItem("verbose_localization", "true");
+  I18n.enableVerboseLocalization();
+
+  return 'Verbose localization is enabled. Close the browser tab to turn it off. Reload the page to see the translation keys.';
+};
+
 // shortcuts
 I18n.t = I18n.translate;