_form.html.haml

= form_for @bottles do |f|
  - if @bottles.errors.any?
    #error_explanation
      %h2= "#{pluralize(@bottles.errors.count, "error")} prohibited this wine from being saved:"
      %ul
        - @bottles.errors.full_messages.each do |msg|
          %li= msg

  .field
    = f.label :name, autofocus: true
    = f.collection_select :wine_id, Wine.all, :id, :name, class: "form-control input-lg"
  OR
  .field
    = f.label :name
    = f.text_field :name, class: "form-control input-lg"
  .field
    = f.label :vintage
    = f.number_field :vintage, class: "form-control input-lg"
  .field
    = f.label :quantity
    = f.number_field :quantity, class: "form-control input-lg"
  .field
    = f.label :location
    = f.number_field :location, class: "form-control input-lg"
  .field
    = f.label :winery
    = f.collection_select :winery_id, Winery.all, :id, :name, class: "form-control input-lg"
  .actions
    = f.submit 'Save'

schema.rb

ActiveRecord::Schema.define(version: 20140222010849) do

  # These are extensions that must be enabled in order to support this database
  enable_extension "plpgsql"

  create_table "bottles", force: true do |t|
    t.datetime "created_at"
    t.datetime "updated_at"
    t.integer  "wine_location_id"
  end

  create_table "locations", force: true do |t|
    t.string   "name"
    t.datetime "created_at"
    t.datetime "updated_at"
  end

  create_table "users", force: true do |t|
    t.datetime "created_at"
    t.datetime "updated_at"
    t.string   "email",                  default: "",     null: false
    t.string   "encrypted_password",     default: "",     null: false
    t.string   "reset_password_token"
    t.datetime "reset_password_sent_at"
    t.datetime "remember_created_at"
    t.integer  "sign_in_count",          default: 0,      null: false
    t.datetime "current_sign_in_at"
    t.datetime "last_sign_in_at"
    t.string   "current_sign_in_ip"
    t.string   "last_sign_in_ip"
    t.string   "role",                   default: "user", null: false
  end

  add_index "users", ["email"], name: "index_users_on_email", unique: true, using: :btree
  add_index "users", ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true, using: :btree

  create_table "wine_locations", force: true do |t|
    t.integer  "wine_id"
    t.integer  "location_id"
    t.datetime "created_at"
    t.datetime "updated_at"
    t.integer  "user_id"
  end

  create_table "wineries", force: true do |t|
    t.string   "name"
    t.datetime "created_at"
    t.datetime "updated_at"
  end

  create_table "wines", force: true do |t|
    t.string   "name"
    t.integer  "vintage"
    t.integer  "winery_id"
    t.datetime "created_at"
    t.datetime "updated_at"
  end

end

show.html.haml

%h3
  = "#{@user.email}'s Cellar"

%a.dropdown.js-activate-form{href: "#"} Add Wines
.js-form.hide
  = render partial: 'wines/form'

%table.table
  %tr
    %th Location
    %th Vintage
    %th Wine
    %th Winery
    %th Quantity
  - @wine_locations.each do |wine_loc|
    %tr{class: cycle('list_line_odd', 'list_line_even')}
      %td= wine_loc.location.name
      %td= wine_loc.wine.vintage
      %td= wine_loc.wine.name
      %td= wine_loc.wine.winery.name
      %td= wine_loc.bottles.count

user.rb

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
  :recoverable, :rememberable, :trackable, :validatable

  has_many :wine_locations

  def add_bottle(location, wine)
    wl = WineLocation.find_or_create_by_wine_id_and_location_id_and_user_id(wine.id, location.id, self.id)
    wl.bottles.create()
  end
end

users_controller.rb

class UsersController < ApplicationController
  before_action :set_user, :only => [:show, :add_wine]

  def index
    @users = User.all
  end

  def show
    @wine_locations = @user.wine_locations.all
    @quantity = params[:quantity]
    @location = params[:location]
    @vintage = params[:vintage]
    @wine_name = params[:name]
    @wine = Wine.find_by_name_and_vintage(@wine_name, @vintage)
    @bottles = @user.add_bottle(@location, @wine)
  end

  def new   
  end

  def create
    @quantity.times {@user.add_bottle(@location, @wine)}
      
  end
  
  def add_wine
    raise params.inspect
  end

  private

  def set_user
    @user = User.find(params[:id])
  end
end