Filter For Multiple Backlinks In File Property

[23426356587]

I'm leveraging the new file property feature to find all tasks in pages where the "Parent Project" is X. The parent project is a link to a note.

I have a working version below, but it only works when there is one project in the parent project field.

I'm not a programer so I got this far, is there a way to make this work when there are multiple parent projects?

not done
filter by function task.file.property('Test') == '[[Test1]]'

[claremacrae]

Hi, I'm unclear whether the parent project is 'Test' or '[[Test1]]'.

Please provide some realistic example tasks, as markdown lines I can copy, so that I can understand what you are trying to do, and can test any answer given.

[23426356587]

Edit from @claremacrae: To test, copy this whole block in to a new file, with Tasks in Dataview format

---
date created: Wednesday, August 7th 2024, 8:03:23 pm
date modified: Wednesday, August 7th 2024, 8:03:29 pm
Test:
  - "[[File1]]"
  - "[[File2]]"
TestSingle: "[[File1]]"
---

## This Works

```tasks
not done
filter by function task.file.property('TestSingle') == '[[File1]]'
```

## This Does Not Work

```tasks
not done
filter by function task.file.property('Test') == '[[File1]]'
```


## Tasks

- [ ] This is a task  [created:: 2024-08-07]
- [ ] This is another task  [created:: 2024-08-07]

[claremacrae]

Thank you very much for adding the extra info.
I have edited your comments to put ~~~ lines before and after each text block, so that the properties are now clear

[claremacrae]

Ah, now I see I can copy the entire content you pasted, so I have reformatted it again so there is only a single ~~~ line at the start, and another at the end.

[claremacrae]

The problem is that your file is using two different Property Types - List and Text - and the JavaScript code for searching them is different.

I found a way that you can use the same filter for both, though.

The group by function lines are so you can visualise what the following does:

`${task.file.property('TestSingle')}`

Text to copy and try out:

## Alternatives

### This Works: Convert TestSingle property to string, then search

```tasks
not done
filter by function `${task.file.property('TestSingle')}`.includes('[[File1]]')
group by function  'Text being searched: ```' + `${task.file.property('TestSingle')}` + '```'
```

### This Works: Convert Test property to string, then search

```tasks
not done
filter by function `${task.file.property('Test')}`.includes('[[File1]]')
group by function  'Text being searched: ```' + `${task.file.property('Test')}` + '```'
```

It gives this in my test vault: