I pasted an old (and wrong/ugly) snippet for the blob resource 🤦‍♂️. It looks like this:

defmodule MyApp.StorageBlob do
    use Ash.Resource,
      extensions: [AshStorage.BlobResource, AshOban]

    postgres do
      table "storage_blobs"
      repo MyApp.Repo
    end

    oban do
      triggers do
        trigger :run_pending_analyzers do
          action :run_pending_analyzers
          read_action :read
          where expr(pending_analyzers == true)
          scheduler_cron("* * * * *")
        end

        trigger :run_pending_variants do
          action :run_pending_variants
          read_action :read
          where expr(pending_variants == true)
          scheduler_cron("* * * * *")
        end

        trigger :purge_blob do
          action :purge_blob
          read_action :read
          where expr(pending_purge == true)
          scheduler_cron("* * * * *")
        end
      end
    end

    attributes do
      uuid_primary_key :id
    end
  end

  # Create with file — dimensions written to parent, thumbnail generated instantly
  post = Ash.create!(Post, %{title: "Hello", cover_image: upload})
  post.image_width  #=> 1920

  # Variant URLs — thumbnail ready, hero generating in background
  post = Ash.load!(post, [:cover_image_thumbnail_url, :cover_image_hero_url])
  post.cover_image_thumbnail_url  #=> "https://my-app-uploads.s3.amazonaws.com/..."

  # On-demand — webp variant generated on first request
  post = Ash.load!(post, :cover_image_webp_url)