User Defined Functions

[lmonson]

I really love dataview! I'd love it even more if I could use functions of my own to augment the dataviewjs queries.

LIST from #tag
WHERE my_function(file)

The key here is that my_function is used repeatedly over several dataview codeblocks, so I don't want to recreate that function every time I use dataviewjs. Another variant of the idea is something like this:

const pages = dv.pages("...");

const rows = complex_grouping_of_pages(pages);

dv.table( [..headers..] , rows );

Here, complex_grouping_of_pages is an extensive set of code to do some data science magic on the pages to group them. I definitely don't want to include all that code into dataviewjs blocks.

Would it be possible to add this? Is there an appetite for it?

[blacksmithgu]

Would a mechanism for registering custom functions via dataviewjs be sufficient? They would be usable in both dataviewjs and dataview.

[lmonson]

I think so, yes! I had been thinking along the lines of how Templater does it -- with a directory of scripts, each loaded as module -- but anything that allows me to separate the code to a unique place and re-use it would be great.

[lmonson]

If you have a preferred approach but lack the time to implement it, I'd be happy to submit a potential PR along the lines you might suggest.

[blacksmithgu]

A directory of scripts which get loaded when dataview starts (or when a new file is added) would be perfectly fine! I'll be looking into it at some point (on the scale of a month or two), though feel free to put up a PR if you want to get it faster.

[benhughes]

This would be amazing, right now I use templater to effectively paste in common functions (example: filtering overdue tasks by pulling out a date link from the line), but they can obviously get out of date quite fast.