build method for specific models?

[JasonBarnabe]

In the examples:

store = Store.create
store.products << Pen.create
store.products.first
  # => #<Product: ...>

But this saves the Pen on line 2. What if I want to attach but not yet save it, as I want to add additional attributes? The << method will save whatever you pass to it.

In the normal, non-inheritence world, I would do:

store = Store.create
product = store.products.build
# ...
product.save

But if I'm using inheritence, if I want it to be a Pen, I've found this works:

store = Store.create
product = store.products.build(actable: Pen.new)
# ...
product.save

Maybe there is already a better way. If not, I would propose something like this:

store = Store.create
product = store.products.build_pen
# ...
product.save

[manuelmeurer]

Sure, I'd be open to adding something like that!
Want to work on a PR?

[manuelmeurer]

Closing due to inactivity.