View Source Ash.Reactor.AshStep (ash v3.4.7)

A reactor step which runs a step-module or an anonymous function, and enqueues any returned notifications before returning.

The following return values are supported: {:ok, result}, {:ok, result, notifications}, {:ok, result, notifications, new_steps}

Example:

ash_step :maybe_update_post do
  run fn %{post: post, new_amount_of_likes: new_amount_of_likes}, ctx ->
    opts = Ash.Context.to_opts(ctx, return_notifications?: true)
    if post.amount_of_likes != new_amount_of_likes do
      Post.update(post, %{amount_of_likes: new_amount_of_likes}, opts)
    else
      {:ok, post}
    end
end

Options

• run - a one or two arity function or MFA which will be called as the run function of the step.
• compensate - a one to three arity function or MFA which will be called as the compensate function of the step. Optional.
• undo - a one to three arity function or MFA which will be called as the undo function of this step. Optional.