Creating a new object inside its parent controller (Rails) - ruby-on-rails

Question

So, for my Rails project I have two models called ButtonOrderDiv and ButtonFinishDiv. They have a has_many/belongs_to relationship where a button_order_div has many button_finish_divs and each button_finish_div belongs to a button_order_div. I am trying to write code so that when the user creates a new button_order_div, the right number of button_finish_divs are automatically created. There is a field for button_order_divs called number_of_parts, which is the number of button_finish_divs to be created. Right now, this is the code that I have inside the ButtonOrderDiv controller:
def create
#button_order_div = ButtonOrderDiv.new(button_order_div_params)
respond_to do |format|
if #button_order_div.save
number = #button_order_div.number_of_parts
for i in number
ButtonFinishDiv.create(button_order_div_id: #button_order_div.id, part: i)
end
format.html { redirect_to #button_order_div, notice: 'Item criado com sucesso.' }
format.json { render :show, status: :created, location: #button_order_div }
else
format.html { render :new }
format.json { render json: #button_order_div.errors, status: :unprocessable_entity }
end
end
end
As you can see, inside the if #button_order_div.save condition, I am trying to create a new ButtonFinishDiv, but it is giving me the "undefined method `each' for 3:Fixnum" error. How do I make this work?

Answer 1

Numbers (Fixnum) don't have the method each (when you do a for x in y, you are trying to iterate through a number), which is specific to the array data structute. What you want is something like this:
1.upto(number) do |i|
ButtonFinishDiv.create(button_order_div_id: #button_order_div.id, part: i)
end