Show number of unread entries in single entry views

[mcnesium]

I want to see how many unread items are left while seeing a single entry. The information is already shown next to the header in /unread, /feed/X/entries and /category/X/entries and goes into the template through that total variable e.g. here.

I want to add an equivalent to the template of a single entry, probably here.

The total variable also appears e.g. here and its value is calculated through that builder.CountEntries() function here.

First I tried view.Set("total", h.store.CountUnreadEntries(feed.ID)) but that didn't work and I found that this function only takes user IDs but nothing else I guess.

So I tried to add count, err := builder.CountEntries() and view.Set("total", count) analogously to the list views into unread_entry_feed.go and unread_entry_category.go but it then always returned only 1 - and I figure that is because that builder object there has only one entry item, in contrast to the list views, where it has multiple items obviously.

I also tried to add the builder.CountEntries() before the builder.WithEntryID(entryID) because until then the code in feed_entries.go and unread_entry_feed.go looked quite similar, but I probably did not understand it correctly. The best I came out with was that it showed the number of all known items of that feed, but not just the unread ones.

So here I am asking for help in this mission. What do I need to add to get view.Set("total", count) to get the number of unread items in that feed or category? If there are other/more obvious ways to show the number in a sigle entry view, I am also happy to learn them.