Rails: accepts_nested_attributes_for with "strong parameters" requiring identifiers in parameters

Suppose the model Book

, with:

class Book < ActiveRecord::Base
  has_many: pages
  accepts_nested_attributes_for :pages

      

        
        
        
      

    

To UPDATE a record Page

instead of CREATING a new one, Rails requires the nested model ID (here:) Page

to resolve in "strong parameters" (instance Book

):

def update
  @book.update(book_params)
end

private

  def book_params()
    params.require(:book).permit(:title, :author, :published,
      pages_attributes: [:id, :word_count, :line_count]) #  <= this ID in here
  end

      

        
        
        
      

    

But does the inclusion ID

of "strong parameters" mean their goal? (Meaning: The user may submit false ID

, causing an invalid connection.)