i18n

resource/locales/en-US/translation.json

@@ -715,6 +715,7 @@
     "current_users": "Current users:",
     "valid_email": "Valid email address is required",
     "existing_email": "The following emails already exist",
+    "give_user_admin": "Give {{username}} admin success",
     "activate_user_success": "Activating {{username}} success",
     "deactivate_user_success": "Deactivating {{username}} success",
     "remove_user_success": "Removing {{username}} success"

resource/locales/ja/translation.json

@@ -699,6 +699,7 @@
     "current_users": "現在のユーザー数：",
     "valid_email": "メールアドレスを入力してください。",
     "existing_email": "以下のEmailはすでに存在しています。",
+    "give_user_admin": "{{username}}を管理者にしました",
     "activate_user_success": "{{username}}を有効化しました",
     "deactivate_user_success": "{{username}}を無効化しました",
     "remove_user_success": "{{username}}を削除しました"

src/client/js/components/Admin/Users/GiveAdminButton.jsx

@@ -15,9 +15,11 @@ class GiveAdminButton extends React.Component {
   }
 
   onClickGiveAdminBtn() {
+    const { t } = this.props;
 
     try {
-      toastSuccess('success!');
+      const username = 'gest';
+      toastSuccess(t('user_management.give_user_admin', { username }));
     }
     catch (err) {
       toastError(err);