如何在rails中播种照片

我正在使用回形针，但不知道如何使用/不使用它。

我有一个占位符，在我的本地路径（OSX）中为/Users/me/dev/APP/doc/seeding/300x220.jpg

我的种子文件是：

 p = Photo.new({:description => 'one', :created_at => "Sun, 1 Jan 2012 01:01:01 -0500".to_datetime, :updated_at => "Sun, 1 Jan 2012 01:01:01 -0500".to_datetime }) p.image_file_name = File.open(Rails.root.join('doc', 'seeding', '300x220.jpg')) p.save! 

我的错误是返回：

 No such file or directory - /Users/me/dev/APP/doc/seeding/300x220.jpg /Users/me/dev/APP/db/seeds.rb:20:in `initialize' /Users/me/dev/APP/db/seeds.rb:20:in `open' /Users/me/dev/APP/db/seeds.rb:20:in `' /Users/me/.rvm/gems/ruby-1.9.3-p362/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:245:in `load' /Users/me/.rvm/gems/ruby-1.9.3-p362/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:245:in `block in load' /Users/me/.rvm/gems/ruby-1.9.3-p362/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:236:in `load_dependency' /Users/me/.rvm/gems/ruby-1.9.3-p362/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:245:in `load' /Users/me/.rvm/gems/ruby-1.9.3-p362/gems/railties-3.2.11/lib/rails/engine.rb:520:in `load_seed' /Users/me/.rvm/gems/ruby-1.9.3-p362/gems/activerecord-3.2.11/lib/active_record/railties/databases.rake:333:in `block (2 levels) in ' /Users/me/.rvm/gems/ruby-1.9.3-p362/bin/ruby_noexec_wrapper:14:in `eval' /Users/me/.rvm/gems/ruby-1.9.3-p362/bin/ruby_noexec_wrapper:14:in `' Tasks: TOP => db:setup => db:seed => db:seed:common => db:seed:original 

在rdoc中搜索回形针 ，不返回任何内容。

其他可能有帮助的文件：

照片架构：

 create_table "photos", :force => true do |t| t.string "description" t.datetime "created_at", :null => false t.datetime "updated_at", :null => false t.string "image_file_name" t.string "image_content_type" t.integer "image_file_size" t.datetime "image_updated_at" end 

Answer 1

 photo.image = File.open(file_path) photo.save!