Kibana Canvas - Markdown date format

[KevSex (Kev)]

Is there a way to use the markdown content to write the previous month?

Just now, I use {date | formatdate "MMMM YYYY"} which produces November 2020 however I'm wondering if there's a way to write the last months date. e.g. October 2020.

Cheers,
Kev

[clintandrewhall]

Good morning, Kev!

This is tough one. Unfortunately, I don't think you're going to be able to do this with date or formatdate alone, because date math is tough to begin with. We don't (currently) expose date manipulation functionality, (though I suppose we could at some point).

One solution would be to subtract 30 days from epoch (but isn't 100% accurate, as months vary in length):

date | math "subtract(value, 2592000000)" | formatdate format="MMMM YYYY"

You can always file an enhancement request for us to expose momentjs date manipulation as a function, or write one yourself and include it as a plugin in Canvas. Otherwise, I'm afraid you're left with trying to perform the date math as part of your query, or other approach.