Display expunge errors #2556

app/controllers/moderator/post/posts_controller.rb

@@ -38,6 +38,8 @@ module Moderator
       def expunge
         @post = ::Post.find(params[:id])
         @post.expunge!
+      rescue StandardError => x
+        @error = x
       end
 
       def confirm_ban

app/views/moderator/post/posts/expunge.js.erb

@@ -1 +1,7 @@
-Danbooru.notice("Post was permanently deleted");
+<% if @post.errors.any? %>
+  Danbooru.error("<%= j @post.errors.full_messages.join('; ') %>");
+<% elsif @error %>
+  Danbooru.error("<%= j @error.to_s %>");
+<% else %>
+  Danbooru.notice("Post was permanently deleted");
+<% end %>