Pass instance of the interaction to InvalidInteractionError class

[ivdma]

Allows an ActiveInteraction::InvalidInteractionError to behave in a similar way as ActiveRecord::RecordInvalid which exposes the failed #record.

ActiveInteraction::InvalidInteractionError exposes #interaction attribute which includes failing interaction. This feature allows for better inspection of why interaction failed and therefore makes feedback to consumers of interaction errors more flexible.

Take for example a Rails controller action which might need to be rescued and whose error details need to be passed to the frontend.

class FooController < ApplicationController
  rescue_from ActiveInteraction::InvalidInteractionError do |exception|
    render json: { errors: exception.interaction.errors.details }, status: :unprocessable_entity
  end

  def update
    result = Foos::Update.run! permitted_params

    render json: result, serializer: FooSerializer, status: :updated
  end
end

[ivdma]

Hello @AaronLasseigne, anything I can do to help you with this PR?

[AaronLasseigne]

No, I just need to get some time to take a good look at it.

[cokara]

We should probably have made the interaction parameter in the initializer default to nil and only bubble up the errors if the interaction is supplied.
This is a breaking change since calling InvalidInteractionError.new without any parameter now blows up. :-)

[AaronLasseigne]

Thanks for the note. I've put out a fix (3.8.1).

[cokara]

Thanks for the note. I've put out a fix (3.8.1).

You're welcome! I appreciate the quick response too. 👍