How to use NaiveDateTime.local_now in Elixir - date

Question

I'm using NaiveDateTime.local_now/1 to record time an item is saved in my db and when it is accessed. When I run warnings on my machine with the command mix compile --warnings-as-errors --force it records no errors but when I run it on our gitlab runner the pipeline fails wth the error
warning: function NaiveDateTime.local_now/0 is undefined or private
Here's how I've used it NaiveDateTime.local_now() |> NaiveDateTime.add(900)
Any insights? I'm using image: elixir:1.7.4-alpine as my Elixir image

Answer 1

NaiveDateTime.local_now/1 exists since v1.10.0 as shown in the top right corner of the window in the documentation I linked and which might be seen by navigating to sources of v1.7.4.
There is absolutely no reason to remain on v1.7.4 in production, elixir is perfectly backward-compatible. Upgrade your image, or, if it is impossible, backport the function to your own module and call it instead.
defmodule MyHelpers do
def local_now(Calendar.ISO) do
{{year, month, day}, {hour, minute, second}} =
:erlang.localtime()
{:ok, ndt} =
NaiveDateTime.new(year, month, day, hour, minute, second)
ndt
end
end