為S3配置回形針的存儲桶選項的正確方法

Question

我正在嘗試將S3存儲桶中的圖像上傳並顯示到heroku上的rails 4應用程序中。 我要在創建“設計器”對象時添加圖像

我正在使用回形針。 在config/environments/production.rb ：

config.paperclip_defaults = {
  :storage => :s3,
  :s3_credentials => {
    :bucket => ENV['AWS_BUCKET'],
    :access_key_id => ENV['AWS_ACCESS_KEY_ID'],
    :secret_access_key => ENV['AWS_SECRET_ACCESS_KEY']
    }
  }

我設置配置變量

$ heroku config
AWS_ACCESS_KEY_ID:            AKIAI...HVWD2YQ
AWS_BUCKET:                   myafricastyle
AWS_SECRET_ACCESS_KEY:        VFgFVF4.....gKnT5AMFtP4

這是我要向其中添加圖像的模型：

class Designer < ActiveRecord::Base
    has_many :items, dependent: :destroy 

    has_attached_file :avatar, styles: {
        thumb: '100x100>',
        square: '200x200#',
        medium: '300x300>'
    }                       
end

我進行了遷移，將圖像添加到Designer表中。

class AddAttachmentAvatarToDesigners < ActiveRecord::Migration
  def self.up
    change_table :designers do |t|
      t.attachment :avatar
    end
  end

  def self.down
    drop_attached_file :designers, :avatar
  end
end

當我嘗試使用上載的照片添加Designer時，我得到：

$ heroku logs

[paperclip] saving /designers/avatars/000/000/016/original/moto_ninjas87.jpg
[paperclip] saving /designers/avatars/000/000/016/original/moto_ninjas87.jpg
Completed 500 Internal Server Error in 2622ms
Completed 500 Internal Server Error in 2622ms
app/controllers/designers_controller.rb:33:in `block in create'
app/controllers/designers_controller.rb:33:in `block in create'
app/controllers/designers_controller.rb:32:in `create'

ArgumentError (missing required :bucket option):
ArgumentError (missing required :bucket option):
app/controllers/designers_controller.rb:32:in `create'

我的存儲桶選項配置有什么問題？

另外：我的controllers/designers_controller.rb顯示：

  def create
    @designer = Designer.new(designer_params)

    respond_to do |format|
      if @designer.save
        format.html { redirect_to @designer, notice: 'Designer was successfully created.' }
        format.json { render action: 'show', status: :created, location: @designer }
      else
        format.html { render action: 'new' }
        format.json { render json: @designer.errors, status: :unprocessable_entity }
      end
    end
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_designer
      @designer = Designer.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def designer_params
      params.require(:designer).permit(:name, :country, :about, :avatar)
    end

我同時安裝了aws-sdk和paperclip寶石

Answer 1

您在傳遞給s3_credentials的哈希中缺少存儲桶。 另外，您應該考慮將config移到yml文件並從那里加載它。

:storage => :s3, 
:path => "/archive/:style/:id/:filename", 
:s3_credentials => File.join(Rails.root, 'config', 's3.yml')

s3.yml文件

production:
   bucket:  <%= ENV['S3_BUCKET'] %>
   access_key_id:   <%= ENV['S3_ACCESS_KEY_ID'] %>
   secret_access_key: <%= ENV['S3_SECRET_ACCESS_KEY'] %>  

Answer 2

發生以下情況是因為您正在create方法中調用@ designer.save，而paperclip向您的設計器類添加了一個創建后的鈎子。

ArgumentError (missing required :bucket option):
app/controllers/designers_controller.rb:32:in `create'

要解決它，我認為

:bucket => ENV['AWS_BUCKET']

在哈希中屬於上一級。 所以：

config.paperclip_defaults = {
   :storage => :s3,
   :bucket => ENV['AWS_BUCKET'],
   :s3_credentials => {
       :access_key_id => ENV['AWS_ACCESS_KEY_ID'],
       :secret_access_key => ENV['AWS_SECRET_ACCESS_KEY']
   }
}

有關更多信息，請參見： http : //rubydoc.info/gems/paperclip/Paperclip/Storage/S3