纸夹+Heroku+S3问题

Question

我按照这个教程在heroku上设置了Paperclip和s3，它工作正常！但现在我移动到一个新项目，尝试重复我在第一个项目上的步骤来使图像上传正常工作，但我做不到，这让我非常疯狂！请帮我解决这个问题...我已经浪费了无数个小时。:-/

这是发生的情况： 我选择一张照片创建活动，我认为上传甚至没有开始（太快了！）。没有错误被调用，我的活动“photo”属性是/photos/original/missing.png 这是我的模型文件：

class Activity < ActiveRecord::Base

  has_many :infos, :dependent => :destroy
  has_many :links, :dependent => :destroy
  has_many :events, :dependent => :destroy

  accepts_nested_attributes_for :infos

  has_attached_file :photo,
    :styles =>{
      :thumb  => "80x60#",
      :medium => "160x120#",
      :large => "320x240#",
      :home => "320x370#"
    },
    :storage => :s3,
    :s3_credentials => "#{RAILS_ROOT}/config/s3.yml",
    :path => ":attachment/activities/:id/:style.:extension",
    :bucket => 'andrea'

end

我的Gemfile：

source 'http://rubygems.org'

gem 'rails', '3.0.5'
gem "paperclip", "~> 2.3"
gem 'aws-s3'

# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'

gem 'sqlite3'

# Use unicorn as the web server
# gem 'unicorn'

# Deploy with Capistrano
# gem 'capistrano'

# To use debugger (ruby-debug for Ruby 1.8.7+, ruby-debug19 for Ruby 1.9.2+)
# gem 'ruby-debug'
# gem 'ruby-debug19', :require => 'ruby-debug'

# Bundle the extra gems:
# gem 'bj'
# gem 'nokogiri'
# gem 'sqlite3-ruby', :require => 'sqlite3'
# gem 'aws-s3', :require => 'aws/s3'

# Bundle gems for the local environment. Make sure to
# put test-only gems in this group so their generators
# and rake tasks are available in development mode:
# group :development, :test do
#   gem 'webrat'
# end

以下是我的s3.yml文件（完整的密钥替换掉“...”）：

development:
  bucket: andrea
  access_key_id: AKIAII...
  secret_access_key: vM977oy6W2TIbArCG9...

test:
  bucket: andrea
  access_key_id: AKIAII...
  secret_access_key: vM977oy6W2TIbArCG9...

production:
  bucket: andrea
  access_key_id: AKIAII...
  secret_access_key: vM977oy6W2TIbArCG9...

这是日志记录：

WARNING: Can't mass-assign protected attributes: infos_attributes
  [1m[36mAREL (0.3ms)[0m  [1mINSERT INTO "activities" ("photo", "created_at", "updated_at", "home", "photo_file_name", "photo_content_type", "photo_file_size", "photo_updated_at", "name") VALUES (NULL, '2011-04-20 13:27:57.428869', '2011-04-20 13:27:57.428869', NULL, NULL, NULL, NULL, NULL, NULL)[0m
[paperclip] Saving attachments.
Redirected to http://localhost:3000/activities/15
Completed 302 Found in 45ms


Started GET "/activities/15" for 127.0.0.1 at 2011-04-20 15:27:57 +0200
  Processing by ActivitiesController#show as HTML
  Parameters: {"id"=>"15"}
  [1m[35mActivity Load (0.9ms)[0m  SELECT "activities".* FROM "activities" WHERE "activities"."id" = 15 LIMIT 1
Rendered activities/show.html.erb within layouts/application (13.5ms)
Completed 200 OK in 39ms (Views: 17.2ms | ActiveRecord: 1.2ms)


Started GET "/photos/large/missing.png" for 127.0.0.1 at 2011-04-20 15:27:57 +0200

ActionController::RoutingError (No route matches "/photos/large/missing.png"):

如果你需要更多信息，请让我知道！

哦，我已经尝试过heroku restart，但是没有任何变化。

- Abramodj

---

你运行了纸夹生成器还是手动添加了附件所需的字段？ - Patrick Connor

我手动添加了它们。有什么命令可以自动执行此操作吗？ - Abramodj

这是 rails g paperclip activity photo，但手动添加也可以，只需确保它们存在即可。 - Patrick Connor

Answer 1

噢耶！！

终于抓住了：我需要修改我的_form.html.erb，从

<%= form_for @activity do |f| %>
...
<% end %>

为了

<%= form_for @activity, :html => { :multipart => true } do |f| %>
...
<% end %>

- Abramodj

---

在下一个版本的Rails（3.1）中，如果有任何文件字段，多部分将自动添加。 :) - Aditya Sanghi