endpoint Diagram::Operation::Create do |ctx, **| redirect_to diagram_path(ctx[:diagram].id) end.Or do |ctx, **| render :form end

An operation has two invocation styles. This is the only difference to an Activity.

Operations are often confused as god objects that do “everything”. However, operations are nothing but orchestrators.

Their high degree of encapsulation makes them a replacement for test factories, too.

Operations completely replace the need for leaky factories.

Operations encapsulate business logic and are the heart of a Trailblazer architecture.

The bare bones operation without any Trailblazery is implemented in the trailblazer-operation gem and can be used without our stack.

An operation is not just a monolithic replacement for your business code. It's a simple orchestrator between the form objects, models, your business code and all other layers needed to get the job done.