I'm using the USDA SR-21 Database for a calorie counting website. To get the calories/quantity I have created some named scopes in the model food.rb

named_scope :by_long_desc, lambda { |long_desc| {:conditions => ["long_desc like ?", "%#{long_desc}%"], :limit => 100 } } named_scope :by_fd_group_id, lambda { |fd_group_id| {:conditions => ["fd_group_id = ?", fd_group_id] } } named_scope :fd_nutrs, :include => :nutrs, :conditions => {'nutrs.nutr_def_id' => 208}

which work and with the controller calling

if params[:search_fd_groups][:id].blank?

      @foods = Food.by_long_desc(params[:search_long_desc]).fd_nutrs
          #raise @foods.to_yaml
    else
      @foods = Food.by_long_desc(params[:search_long_desc]).by_fd_group_id(params[:search_fd_groups][:id]).fd_nutrs
    end
  end

when raise raise @foods.to_yaml

I get

• !ruby/object:Food attributes: n_factor: "6.25" ref_desc: "" updated_at: com_name: "" fat_factor: "9.02" shrt_desc: BEERWURST,BEER SALAMI,PORK & BF fdgrp_cd: "0700" cho_factor: "3.68" pro_factor: "4.27" id: "7002" survey: Y manu_facname: "" refuse: "0" long_desc: Beerwurst, beer salami, pork and beef ndb_no: "07002" created_at: 2009-01-29 18:18:10 sci_name: "" fd_group_id: "700" attributes_cache: {}

nutrs: - !ruby/object:Nutr

attributes:
  cc: 
  updated_at: 
  low_eb: "0.000"
  std_error: "0.000"
  val: "277.000"
  stat_cmt: ""
  df: "0"
  min_val: "0.000"
  add_nutr_mark: ""
  num_studies: "0"
  ref_ndb_no: ""
  nutr_def_id: "208"
  up_eb: "0.000"
  id: "101976"
  deriv_cd: NC
  src_cd: "4"
  num_data_pts: "0"
  nutr_no: "208"
  ndb_no: "07002"
  created_at: 2009-01-29 18:13:08
  max_val: "0.000"
  food_id: "7002"
attributes_cache: {}

which is all good, but how do I access nutrs.val in the view.

Consumption

<%= render :partial => "search_foods" %>

Number of records returned: <%=h @foods.count %>

<% if !@foods.nil? %><% for food in @foods -%> <% for gram in food.grams %><% form_tag 'add_to_cart' do %> <% end %><% end %> <% end %><% end %>

<%=h food.long_desc %>

<%= text_field_tag 'quantity' %><%=h gram.amount %>-<%=h gram.msre_desc %> <%= hidden_field_tag :food_id, gram.food_id %> <%= hidden_field_tag 'gram_id', gram.id %> <%= submit_tag "Add" %>

I need to calculate quantity.to_f*gram.gm_wgt*nutr.val/100 to show calories pre item.

I'm so close.............thanks