Paperclip with amazon s3

How to setup s3 with paperclip

gem 'paperclip'
gem 'aws-sdk'

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If you are using heroku server the do the following things

$ heroku config:set AWS_BUCKET=your_bucket_name
$ heroku config:set AWS_ACCESS_KEY_ID=your_access_key_id
$ heroku config:set AWS_SECRET_ACCESS_KEY=your_secret_access_key

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your model video.rb file look like this.

class Video < ActiveRecord::Base
  attr_accessible :source, :video_type_id,:title 
  has_attached_file :source,
  :path => ":rails_root/public/system/:attachment/:id/:style/:filename",
  :url => "/system/:attachment/:id/:style/:filename",
  :storage => :s3,
  :s3_permissions => :public_read,
  :s3_protocol => "http",
  :s3_credentials => "#{Rails.root}/config/s3.yml"

  # :s3_credentials => {:bucket => ENV['bucket name'],
  # :access_key_id => ENV['key_id'],
  # :secret_access_key => ENV['access_key']}

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Add s3.yml in your config file.
production:
  access_key_id: AKIAJHFJC43NJO4H7U6A
  secret_access_key: BTrvTOQ27oENb452+h+U+hHeEbjS8YeAV1mxixdF
  bucket: koresol

development:
  access_key_id: AKIAJHFJC43NJO4H7U6A
  secret_access_key: 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
  bucket: koresol


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Then login to amazon s3 server and go to console page

1 .https://console.aws.amazon.com/s3/home?region=us-west-2
2. Create one bucket
3. Then click on user name on to of this page.
4. click on "security credential" link
5. Click on "access keys" 
6. create new root key. 
It will generate "secret key" and "access key"