FIX: better error message when forum is in read-only mode

app/assets/javascripts/discourse/lib/export-csv.js.es6

@@ -1,4 +1,6 @@
 import { ajax } from "discourse/lib/ajax";
+import { popupAjaxError } from "discourse/lib/ajax-error";
+
 function exportEntityByType(type, entity, args) {
   return ajax("/export_csv/export_entity.json", {
     method: "POST",
@@ -11,9 +13,7 @@ export function exportUserArchive() {
     .then(function() {
       bootbox.alert(I18n.t("user.download_archive.success"));
     })
-    .catch(function() {
-      bootbox.alert(I18n.t("user.download_archive.rate_limit_error"));
-    });
+    .catch(popupAjaxError);
 }
 
 export function exportEntity(entity, args) {

app/controllers/export_csv_controller.rb

@@ -9,6 +9,8 @@ class ExportCsvController < ApplicationController
     Jobs.enqueue(:export_csv_file, entity: export_params[:entity], user_id: current_user.id, args: export_params[:args])
     StaffActionLogger.new(current_user).log_entity_export(export_params[:entity])
     render json: success_json
+  rescue Discourse::InvalidAccess
+    return render_json_error I18n.t("csv_export.rate_limit_error")
   end
 
   private

config/locales/server.en.yml

@@ -575,7 +575,6 @@ en:
           attributes:
             word:
               too_many: "Too many words for that action"
-              
 
   uncategorized_category_name: "Uncategorized"
 
@@ -3760,6 +3759,7 @@ en:
   csv_export:
     boolean_yes: "Yes"
     boolean_no: "No"
+    rate_limit_error: "Posts can be downloaded once per day, please try again tomorrow."
 
   static_topic_first_reply: |
     Edit the first post in this topic to change the contents of the %{page_name} page.