contacts.rb

# == Schema Information
#
# Table name: contacts
#
#  id         :integer          not null, primary key
#  first_name :text
#  last_name  :text
#  email      :text
#  bcard      :text
#  linked_in  :text
#  background :text
#  company_id :integer
#  user_id    :integer
#  created_at :datetime         not null
#  updated_at :datetime         not null
#

class Contact < ActiveRecord::Base
  attr_accessible :background, :bcard, :company_id, :email, :first_name, :last_name, :linked_in, :user_id, :phone_numbers_attributes
  belongs_to :company
  belongs_to :user
  accepts_nested_attributes_for :company
  has_many :phone_numbers
  accepts_nested_attributes_for :phone_numbers
  mount_uploader :bcard, FileUploader

end

contacts_controller.rb

class ContactsController < ApplicationController
  def index

  end
 def show
    @contact = Contact.find(params[:id])
  end

  def new
    @contact = Contact.new
    @contact.phone_numbers.build
  end

  def create
    @company = Company.find(params[:company_id])
    @contact = @company.contacts.create(params[:contact])
    
    if @contact.save
      redirect_to "/contacts"
    else 
      render 'new'
    end
  end

  def edit
  end
end

file_uploader.rb

# encoding: utf-8

class FileUploader < CarrierWave::Uploader::Base

  # Include RMagick or MiniMagick support:
  # include CarrierWave::RMagick
  # include CarrierWave::MiniMagick

  # Choose what kind of storage to use for this uploader:
  storage :file
  # storage :fog

  # Override the directory where uploaded files will be stored.
  # This is a sensible default for uploaders that are meant to be mounted:
  def store_dir
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  end

  # Provide a default URL as a default if there hasn't been a file uploaded:
  # def default_url
  #   # For Rails 3.1+ asset pipeline compatibility:
  #   # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
  #
  #   "/images/fallback/" + [version_name, "default.png"].compact.join('_')
  # end

  # Process files as they are uploaded:
  # process :scale => [200, 300]
  #
  # def scale(width, height)
  #   # do something
  # end

  # Create different versions of your uploaded files:
  # version :thumb do
  #   process :scale => [50, 50]
  # end

  # Add a white list of extensions which are allowed to be uploaded.
  # For images you might use something like this:
  # def extension_white_list
  #   %w(jpg jpeg gif png)
  # end

  # Override the filename of the uploaded files:
  # Avoid using model.id or version_name here, see uploader/store.rb for details.
  # def filename
  #   "something.jpg" if original_filename
  # end

end

new.html.erb

<div class="bg-color">

<div class="container well">

<h1>Add New Contact</h1>


 <%= form_for(@contact,:url => {:action => "create"}, :html => {:multipart => true},) do |f| %>
 <%= f.label :first_name %>
 <%= f.text_field :first_name, :class => "input-width bottom-border" %>
 <%= f.label :last_name %>
 <%= f.text_field :last_name, :class => "input-width bottom-border" %>
 <div class="items">
   <a href="#" class="add">add phone</a>
<%= f.nested_fields_for :phone_numbers do |f|
      render 'companies/phone', f: f

end %> 
 
   
</div>
 <%= f.label :email %>
 <%= f.text_field :email, :class => "input-width bottom-border" %>
 <%= f.label :bcard %>
 <%= f.file_field :bcard, :class => "input-width bottom-border" %>
 <%= f.label :linked_in %>
 <%= f.text_field :linked_in, :class => "input-width bottom-border" %>



 <%= f.label :background %>
 <%= f.text_area :background, :class => "bg-width text-area-height" %>


 <%= f.submit "Add Contact", class: "btn btn-large btn-info" %>

</div>
 <% end %>
</div>