Replace file_columns on Ruby On Rails to Carrierwave

Let's use CarrierWave

Add to Gemfile

gem 'carrierwave'
gem 'mini_magick'

Run this

$> bundle install

In your model add

class SellerProduct < ActiveRecord::Base
  mount_uploader :image, ImageUploader

Then launch your server

$> rails server

Replace in the View

Assuming @myProduct is defined

<%= file_column_field("myProduct", "photo") %>

By

<%= form.file_field :photo %>

And replace

<%= image_tag url_for_file_column("temp", "photo", "thumb"), :border=>"0" %>

with

<%= image_tag @temp.photo.thumb %>

In the controller

Use params[:photo]