TIYA review of relationships

relationships.rb

class Order
  has_many :line_items
  has_many :cupcakes, through: :line_items

  def total_price

    totals = line_items.map(&:total) # 50, 50, 100
    totals.sum
    totals.inject(:+)

    # total = 0
    #
    # line_items.each do |li|    # 50, 50, 100
    #   total += li.total
    # end
    #
    # total
  end
end



class LineItem
  belongs_to :order
  belongs_to :cupcake
  #quantity
  #price

  def total
    quantity * price
  end
end

class Cupcake
  has_many :line_items
  has_many :orders, through: :line_items
  # name
end

--------

# @order

puts @order.id
puts @order.created_at


"your cupcake selections: #{@order.cupcakes.map(&:name).join(", ")}"

@order.line_items.each do |line_item|
  print line_item.quantity
  print number_to_currency line_item.price
  print line_item.cupcake.name
end

puts "total: #{@order.total_price}"

# sum all line_item totals (price * quantity)