I have the following.
@sales = Sale.find(:all, :include => [:sale_items])
I want totals on the sale items. It works if I code it like this.
@sale_item_total = 0 @sales.each do |sale| @sale_item_total += @ sale.sale_items.to_a.sum(&:price) end @sale_item_total
The problem is my real world project has nested includes on several models and I want totals on all of them so I’m looking for a rails way to access a collection of all the associated sale items in an instance variable like @sale_items without needing to reference each @sale first.
I could pull them out like this but isn’t there a better way?
@sale_items = @sales.each do |sale| sale.sale_items.each do |sale_item| @sale_items << sale_item end
end @sale_item_total = @sale_items.to_a.sum(&:price)