how to use date and durations in dataviewjs?

[vitaly]

what is dataviewjs equivalent of the following

`= date(today) - this.date `

?

this.date is at dv.current().date, but dv.date('today') does not work, and I have no idea how to get the duration as a diff of dates.

[iwconfig]

Use this.date.diffNow() or this.date.until(otherDate). And since luxon is available from inside dataviewjs, if you need to create new DateTime objects, you can do something like

const { DateTime, Duration } = luxon
const otherDate = DateTime.fromObject({ years: 3000, hours: 13, minutes: 37 })
const thatDuration = Duration.fromISOTime('13:37')
const thatIntervalButActuallyAnotherDuration = this.date.diffNow() // documentation says this returns an Interval but it's actually a Duration. Don't know why.
console.log(thatIntervalButActuallyAnotherDuration.plus(thatDuration).toObject())

[vitaly]

oh. didn't know luxon was there! What other things are available besides dv and input in views?

[blacksmithgu]

You can access anything in the Obsidian API, generally speaking, through dv.app.

[vitaly]

Unfortunately luxon is not available from views. I looked at the code, and I couldn't find the place where it was defined. I only see importing DateTime from it, but never the whole library. weird...

[blacksmithgu]

I've added luxon to dataview directly (dv.luxon), and I've also added dv.date() and dv.duration() for parsing dates/durations from strings.

[wenlzhang]

I've also added dv.date() and dv.duration() for parsing dates/durations from strings.

@blacksmithgu I have updated to version 0.4.21 of Dataview with Obsidian v0.13.4. However, $=dv.date('today') yields - for me.

[wenlzhang]

dv.func.date('today') also gives -, although this is mentioned in #194 (comment).

[blacksmithgu]

Fixed in upcoming 0.5.0 - all date shorthands will also work in dv.date() and date().

[pravin-d]

What a life saver boys.. adding luxon to dv. thank you