Dataview WHERE won't filter by alias in a propety link

[SquirrelTail]

I have a Dataview query issue relating to link aliases. I’m trying to make an index organised by subheadings, and it’s giving me a bit of a headache.

Explanation of Intended Workflow

So, I have a list property called Categories, which sorts my notes into what subheading I want them under in the main index via alias links to the index note.

This links back to the main index note, but displays in the propeties view as Categories: Topic Name, hence the use of an alias so as to specify but still link back to the note where the index list can be found.

In the main note, I then ideally use Dataview to create an index of pages with that category topic, like so:

(Note: the lack of quotemarks around the link name in the propety list there is because links break if you do that.)

The Problem

…But Dataview doesn’t pay attention to aliases in it’s link filtering, for some reason. When I try to create another category topic…

…It ends up looking like this:

When Dataview is reading the list contents and printing the relevant pages, it’s printing all the pages that have a Categories item linking to the general index page, instead of only the item that links to the specified alias.

Suffice it to say, I don’t want it to work like that.

So. Uh. Help.

[dawni]

Documentation about the Dataview functions for links.

The two queries you were going for:

Historical Eras
```dataview
LIST
WHERE filter(Categories, (c) => meta(c).display = "Historical Era")
```

History by Region
```dataview
LIST
WHERE filter(Categories, (c) => meta(c).display = "History by Region")
```

Those are the parts relevant to the link. BYO FROM and SORT.

Alternatively, you could have Dataview find the categories and group them for you so you don’t have to type out each category:

```dataview
LIST rows.file.link
WHERE contains(Categories, [[History]])
FLATTEN filter(Categories, (c) => meta(c).display) AS c
FLATTEN meta(c).display AS category
GROUP BY category
```

Results using your example notes, where I added one note that has both of the categories: