sangeethailango

sangeethailango

Hey fellow learners,

I have a field called estimated_hours in one of my Ash resource called tasks. I want the datatype of this field to be Postgres interval. I want to calculate how many hours does user wants to complete a task and i will also calculate the sum of these estimated hours.

I found the documentation below from Hex Docs:

I have also searched for Postgres interval datatype and went through the below tutorial.

However, I couldn’t figure out how to apply it in my Ash resource.

Please help me to find out how I can do it.

Showing Posts 1 to 3

zachdaniel

zachdaniel

Creator of Ash

Hello!

So in Ash, the primary drive for this would be a custom type. Something like:

defmodule MyApp.Interval do
  use Ash.Type

  def storage_type(_), do: :interval # you'll have to experiment with what the appropriate storage_type is here

  # define cast_input, cast_stored, dump_to_native
end

I haven’t wrapped a built in Postgrex type in quite some time, but take a look at the docs for Ash.Type for info on defining a custom type, that may be enough to get it over the line :+1:

sangeethailango

sangeethailango OP

Thank you for replying. I will try to add custom type.

adrian

adrian

Hello @sangeethailango, did you create the custom type? I am trying to achieve the same as you.

Thanks!

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