Rails 4 combining output from models - ruby-on-rails

Question

I am a beginner, so this question maybe very elementary. I appreciate any help. I have three models - one Metal that does a query of a database to get a price and another QuoteMetal which is nested through has_many and accepts_nested_attributes_for in Lead. I need the results of the query conducted through the Metal model to be available in the lead collection so I can display the results in the view.
My question: how do I get those query results (specifically the price attribute) to be in the Lead instance variable. Of if not the lead instance variable - what is the best way to display the results. Below is my code.
class LeadsController < ApplicationController
def index
#lead = Lead.new
#quote_metal = #lead.quote_metals.build
#quote_melee = #lead.quote_melees.build
#quote_diamond = #lead.quote_diamonds.build
end
def create
#raise params.inspect
#lead = Lead.new(lead_params)
#qm = #lead.quote_metals.map { |f| Metal.calculate_metal(f).first}
##lead.quote_metals.each do |f|
# f[:price] = #qm[:price].to_i
#end
#lead = Lead.create!(lead_params)
end
def show
end
private
def lead_params
params.require(:lead).permit([:name, :email, :phone, :zip, :note, :method,
quote_metals_attributes: [:id, :metal, :weight, :unit, :price],
quote_melees_attributes: [:shape, :quality, :quantity, :totalweight, :size],
quote_diamonds_attributes: [:shape, :size, :color, :clarity]
])
end
end
Metal Model:
class Metal < ActiveRecord::Base
enum metal: {platinum: 1, palladium: 2, "10_karat_gold": 3, "14_karat_gold": 4,
"18_karat_gold": 5, "22_karat_gold": 6, silver: 7}
enum unit: {pennyweight: 1, grams: 2, ounce: 3, pound: 4}
attr_accessor :weight
#Validations
validates :metal, :unit, :weight, presence: true
scope :calculate_metal, ->(quote_metal) {
where(metal: QuoteMetal.metals[quote_metal.metal],
unit: QuoteMetal.units[quote_metal.unit])
}
scope :multiple, ->(quote_metal){
}
end
Create.html.erb
<pre>
<%= #qm.inspect %>
<br>
<%= #lead.quote_metals.inspect %>
<br>
<%= #qm.inspect %>
<br>
<%= #qm2.inspect %>
</pre>
Output:
[#<Metal id: 11, metal: 2, unit: 2, price: #<BigDecimal:7ff01dac4be8,'0.1367E2',18(18)>, created_at: "2015-05-26 10:36:38", updated_at: nil, weight: nil>, #<Metal id: 11, metal: 2, unit: 2, price: #<BigDecimal:7ff01da96450,'0.1367E2',18(18)>, created_at: "2015-05-26 10:36:38", updated_at: nil, weight: nil>]
#<ActiveRecord::Associations::CollectionProxy [#<QuoteMetal id: 231, lead_id: 176, metal: 2, unit: 2, price: nil, weight: #<BigDecimal:7ff01cc71320,'0.1E1',9(18)>, quote: nil, created_at: "2015-07-14 18:26:46", updated_at: "2015-07-14 18:26:46">, #<QuoteMetal id: 232, lead_id: 176, metal: 2, unit: 2, price: nil, weight: #<BigDecimal:7ff01ca49d90,'0.2E1',9(18)>, quote: nil, created_at: "2015-07-14 18:26:46", updated_at: "2015-07-14 18:26:46">]>
[#<Metal id: 11, metal: 2, unit: 2, price: #<BigDecimal:7ff01dac4be8,'0.1367E2',18(18)>, created_at: "2015-05-26 10:36:38", updated_at: nil, weight: nil>, #<Metal id: 11, metal: 2, unit: 2, price: #<BigDecimal:7ff01da96450,'0.1367E2',18(18)>, created_at: "2015-05-26 10:36:38", updated_at: nil, weight: nil>]
[[#<Lead id: nil, name:..., note: "asdf", created_at: nil, updated_at: nil>, #<Metal id: 11, metal: 2, unit: 2, price: #<BigDecimal:7ff01dac4be8,'0.1367E2',18(18)>, created_at: "2015-05-26 10:36:38", updated_at: nil, weight: nil>]]
Thank you.