Print date/time as text like '3 days ago'

Jacky See

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Sep 30, 2016, 12:28:42 AM9/30/16

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I'm wondering how can I print a date/time as '3 days ago' like this library http://timeago.yarp.com/ ?

What I can think of is to use subscription and Time.every to pass current date time to model for rendering.
Is it possible to update current date to model only when update function is called?

Max Goldstein

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Sep 30, 2016, 2:24:38 AM9/30/16

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I think there are two parts here.

A "time ago in words" library as a pure function of two dates (now and the date in question). This is independent of where the dates come from.

A subscription that provides you the "now" date at a frequency you specify, which gets stored in the model. I don't think there's a way to ask for the date only when update would otherwise be called, and you don't want that (the time should update if the user leaves the computer alone for ten minutes).

Jacky

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Sep 30, 2016, 2:33:06 AM9/30/16

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I can think of two path to update the current time:

- through subscription to Time.every, set duration like 1 min

- through update command like:

update msg mode =

case msg of

OtherAction ->

...

{ model | ... } ! [ Task.perform (\_ -> NoOp) UpdateTime Time.now ]

UpdateTime time ->

{ model | currentTime time } ! []

NoOp ->

model ! []

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