Heroku CarrierWave S3 - 不知道如何保存圖片

Question

我需要使用「aws.amazon.s3」服務保存圖片。 在寶石文件我有：

gem 'carrierwave' 
gem 'rmagick' 
gem 'fog' 
gem 'sprockets-rails' 

我想用色器件登記控制器添加頭像到我的用戶。 我這樣做了：

1）rails g migration add_avatar_to_users avatar：string;
耙分貝：遷移

2）加入該行：

class User < ActiveRecord::Base 
    mount_uploader :avatar, AvatarUploader 
end 

3）創建應用程序/上傳/ avatar_uploader

# encoding: utf-8 

class AvatarUploader < CarrierWave::Uploader::Base 

include CarrierWave::RMagick 

# Choose what kind of storage to use for this uploader: 
#storage :file 
storage :fog 

# Override the directory where uploaded files will be stored. 
# This is a sensible default for uploaders that are meant to be mounted: 
def store_dir 
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}" 
end 

# Create different versions of your uploaded files: 
version :thumb do 
process resize_to_fill: [140, 140] 
process convert: 'jpeg' 
# process :resize_to_fit => [140, 140] 
end 
# For images you might use something like this: 
def extension_white_list 
    %w(jpg jpeg gif png) 
end 
end 

4）創建的應用程序/配置/ INIT/carrierwawe.rb

CarrierWave.configure do |config| 

config.storage = :fog 
config.fog_directory = "app.#{Rails.env}" # required, 
if Rails.env.production? 
    config.fog_credentials = { 
    :provider    => 'AWS',            # required 
    :aws_access_key_id  => ENV["AWS_ACCESS_KEY"],      # required 
    :aws_secret_access_key => ENV["AWS_SECRET_KEY"],      # required 
    :region     => 'eu-west-1' 
} 
config.cache_dir = "#{Rails.root}/tmp/uploads" 
config.fog_directory = ENV["AWS_BUCKET"]         # required 
config.fog_public  = false 


config.fog_attributes = {'Cache-Control'=>'max-age=60'} 
config.fog_public  = false    # (optional) public readability,  defaults to true 
config.cache_dir = Rails.root.join('tmp','uploads') 
config.root = Rails.root.join('tmp') 
else 
config.fog_credentials = { 
    :provider    => 'AWS', 
    :aws_access_key_id  => '', 
    :aws_secret_access_key => '', 
    :region     => 'eu-west-1' 
} 
config.cache_dir = '/home/vagrant/uploads_tmp/tmp/uploads' 
config.root = '/home/vagrant/uploads_tmp/tmp' 
end 
end 

5）我的application_controller（加 - ：username和：avatar，：avat ar_cache）：

def configure_permitted_parameters 
devise_parameter_sanitizer.for(:sign_up) { |u| u.permit(:username, :email, :password, 
                 :password_confirmation, :remember_me , :avatar, :avatar_cache) } 
devise_parameter_sanitizer.for(:account_update) {|u| u.permit(:username, :email, :password, 
                   :password_confirmation, :current_password , :avatar, :avatar_cache) } 
end 

6）查看：視圖/設計/註冊/ new.html.haml

= simple_form_for(resource, :as => resource_name, :url => registration_path(resource_name),html: { role: "form" , :multipart => true }) do |f| 
     .form-group 
    = f.label :avatar do 
     = f.file_field :avatar , class: "form-control" 
     = f.hidden_field :avatar_cache 

7）查看：視圖/設計/註冊/ edit.html.haml

 .form-group 
    - if current_user.avatar.url.present? 
     = image_tag(current_user.avatar.url) 
     -#= f.label :remove_avatar do 
     -# = f.check_box :remove_avatar 
    = f.file_field :avatar, class: "form-control" 
    = f.hidden_field :avatar_cache 

8）路線

devise_for :users 
resources :dashboard 
resources :users 
root to: "users#show" 

當我去到http://127.0.0.1:3000/users/sign_in

並填寫此推送提交後的所有字段。控制檯告訴我，...

Answer 1

我弄清楚它應該如何在Heroky和S3 文件工作：u_proj \設置\初始化\ carrierwave.rb

CarrierWave.configure do |config| 

if Rails.env.production? 
    config.fog_credentials = { 
     # Configuration for Amazon S3 
     :provider    => 'AWS', 
     :aws_access_key_id  => ENV['AWS_ACCESS_KEY'], 
     :aws_secret_access_key => ENV['AWS_SECRET_KEY'] 
    } 
    config.fog_directory  = ENV['S3_BUCKET_NAME'] 
    config.storage   = :fog 
else 
    config.fog_credentials = { 
     :provider    => 'AWS', 
     :aws_access_key_id  => '', 
     :aws_secret_access_key => '', 
     :region     => 'eu-west-1' 
    } 
    config.storage = :file 
    config.cache_dir = "#{Rails.root}/public/tmp" 
end 
end 

使用此：

heroku config:set AWS_ACCESS_KEY_ID= add a-key 
heroku config:set AWS_SECRET_ACCESS_KEY= add s-a-key 
heroku config:set S3_BUCKET_NAME= add b-name 

然後 提交和推送到Heroku的 就是這樣