I have a model named Book, and I want to adjust the standard Book#new to show the fields for 10 books, so that 10 can be created at once instead of
The example article you referenced was talking about nested model forms. Railscasts also has a video here: http://railscasts.com/episodes/196-nested-model-form-part-1
Both refer to a single instance of a model with relationships to other models.
What you want to do is multiple instances of the same model, not a nested relationship.
My question is, why? Do they really save time tabbing from one fieldset to another over hitting enter to submit a single record?
If you want to save time in data entry why not just have the create action redirect back to new so they can instantly enter the next record? Or use AJAX to add a new fieldset to the page after each record is submitted?
I think these methods will keep your view and controller nice and RESTful.