STI subclasses with lifecycle creators do not work

[stevemadere]

If ParentClass in a STI scheme has a lifecycle, ChildClass cannot define functional lifecycle creators.

If ChildClass attempts to define a lifecycle, it simply end up extending the lifecycle of ParentClass.

This is mostly a problem if the ChildClass tries to define any lifecycle create actions. If ChildClass contains code like this:

lifecycle do
   state :child_specific_state
   create :child_specific_creator, become: child_specific_state
end

Then ParentClass gets a new creator called child_specific_creator.

When the lifecycle create action is executed, on ChildClass the ChildClass::Lifecycle method returns the same value as ParentClass::Lifecycle.

Unfortunately, the lifecycle object itself contains a pointer to the model.

If you have a look at the source code for the Hobo::Models::Lifecycle::Creator#run! method, you will see it call lifecycle.model.new for any creator action and thus only creates instances of ParentClass even if the creator called was child_specific_creator.

[stevemadere]

I am having to work around this by just not using a lifecycle creator when creating an instance of ChildClass. I am using ordinary rails create and the auto-generated hobo controller new/create actions handle my UI.

However, if my use case had involved multiple distinct creators in ChildClass, it would be much uglier.

[stevemadere]

It is even worse than I thought. Auto routes for ChildClass are completely FUBAR by the lifecycle in ParentClass.

Even with a directive like this

  auto_actions except: :lifecycle

in the definition of ChildClassesController, all of the ParentClassController lifecycle actions get a route under /child_classes/ and NONE of the standard CRUD actions get a route:

It does exactly the opposite of what I requested.

Fun.