画像をアップロードするシップファイルからペーパークリップ宝石を使用して

Question

私は画像の保存とリンクのために、レール上でRubyを使用しています。それは素晴らしいです。私はデータベースに画像を追加して種を投げたい。 Rbだから、そのための正しい構文は何ですか？

seed.rb

#add 2 Collection 
Collection.create(title: 'Beauty, Health', Description: '<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit</p>') 
Collection.create(title: 'Mobiles, Computers', Description: '<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit</p>') 


#ADD 3 PRODUCT IN EACH COLLECTION 

Product.create(name:'Make-up', title: 'Make-up', description: '<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit</p>', 
       price: '29', stars: '4', review: '<p>Love this.. always use Lakme compact for the quality purpose.. works well for me everytime..</p>', 
       collection_id: '3', product_image: File.new("images/seed3.jpg")) 

(/home/aspireedge/Aspiree/TestShop/app/assets/images) <== image_location

エラー：

***@***-H81M-S:~/***/***$ rake db:seed 
rake aborted! 
Errno::ENOENT: No such file or directory @ rb_sysopen - images/seed3.jpg 
/home/***/***/***/db/seeds.rb:18:in `initialize' 
/home/***/***/***/db/seeds.rb:18:in `new' 
/home/***/***/***/db/seeds.rb:18:in `<top (required)>' 
/home/***/.rvm/gems/ruby-2.1.2@subscription/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:268:in `load' 
/home/aspireedge/.rvm/gems/ruby-2.1.2@subscription/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:268:in `block in load' 
/home/aspireedge/.rvm/gems/ruby-2.1.2@subscription/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:240:in `load_dependency' 
/home/aspireedge/.rvm/gems/ruby-2.1.2@subscription/gems/activesupport-4.2.9/lib/active_support/dependencies.rb:268:in `load' 
/home/aspireedge/.rvm/gems/ruby-2.1.2@subscription/gems/railties-4.2.9/lib/rails/engine.rb:547:in `load_seed' 
/home/aspireedge/.rvm/gems/ruby-2.1.2@subscription/gems/activerecord-4.2.9/lib/active_record/tasks/database_tasks.rb:253:in `load_seed' 
/home/aspireedge/.rvm/gems/ruby-2.1.2@subscription/gems/activerecord-4.2.9/lib/active_record/railties/databases.rake:173:in `block (2 levels) in <top (required)>' 
/home/aspireedge/.rvm/gems/ruby-2.1.2@subscription/gems/rake-12.0.0/exe/rake:27:in `<top (required)>' 
/home/aspireedge/.rvm/gems/ruby-2.1.2@subscription/bin/ruby_executable_hooks:15:in `eval' 
/home/aspireedge/.rvm/gems/ruby-2.1.2@subscription/bin/ruby_executable_hooks:15:in `<main>' 
Tasks: TOP => db:seed 
(See full trace by running task with --trace) 

Product.rb（モデル）

class Product < ActiveRecord::Base 

    belongs_to :collection 

    has_attached_file :product_image, styles: { product:"253x144", medium: "300x300>", thumb: "100x100>" }, default_url: "/images/:style/missing.png" 
    validates_attachment :product_image, content_type: { content_type: ["image/jpg", "image/jpeg",  "image/png"] } 
end 

Answer 1

を私はあなたがあなたのディレクトリ内の画像フォルダを作成

1. エラーを解決します。
2. あなたはシードファイルへの画像のためのroot_pathを割り当てる

product_image: File.new("#{Rails.root}/images/seed3.jpg"))

Answer 2

これは動作するはずです：

product = Product.new(name:'Make-up', title: 'Make-up', description: '<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit</p>', 
       price: '29', stars: '4', review: '<p>Love this.. always use Lakme compact for the quality purpose.. works well for me everytime..</p>', 
       collection_id: '3') 
product.product_image = File.open("images/seed3.jpg") 
product.save