Implement polymorphic_embeds_one in ash_postgres about ash_postgres HOT 6 CLOSED

So you can achieve it with a custom type, i.e

defmodule MyApp.Types.Report do
  use Ash.Type
  
  def cast_input(%{type: type} = input, _) do
    resource = case type do
       :category -> MyApp.ReportTypes.Category
       ...
    end
    
        resource |> Ash.Changeset.for_create(:create, input) |> MyApp.Api.create()
  end

  def cast_stored(%{"type" => type}, _) do
        resource = case type do
          ...
        end
        
         resource |> Ash.Changeset.for_create(:create, input) |> MyApp.Api.create()
  end
  
 ..
end

Since technically in Ash embeds are really just types under the hood, you can do pretty much anything they do and have a polymorphic result. At some point, union types will likely be added to core to accomplish this.

from ash_postgres.

Realistically, a custom type could be made that abstracts this generically. i.e

attribute :reports, {:array, MyApp.Types.PolymorphicEmbed} do
  constraints [items: [types: [foo: Foo, bar: Bar]]]
end

from ash_postgres.

@zachdaniel thanks for your super quick reply, this will allow us to proceed with prototyping.

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My pleasure :) Let me know if you have any other questions :) Feel free to join the discord as well.

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I tried to sign up to discord but was immediately disabled as a user (without logging in a single time) I'm trying to solve the issue with their support but it's taking longer than expected :(

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oh no :( Well if you're in the elixir discord, you can reach me through the #ash-framework channel. Sorry that happened! Hopefully not happening to others trying to join the discord as well...

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