CarrierWave\u306f\u3001Ruby\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3051\u308b\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6a5f\u80fd\u3092\u7c21\u5358\u304b\u3064\u67d4\u8edf\u306b\u5b9f\u88c5\u3067\u304d\u308b\u5f37\u529b\u306aGem\u3067\u3059\u3002
\u672c\u8a18\u4e8b\u3067\u306f\u3001CarrierWave\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u304b\u3089\u9ad8\u5ea6\u306a\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af\u3001\u3055\u3089\u306b\u306f\u5b9f\u8df5\u7684\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u4f8b\u307e\u3067\u3001\u5305\u62ec\u7684\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\u76ee\u6b21 <\/p>\n
CarrierWave\u306f\u3001Ruby\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306b\u304a\u3051\u308b\u753b\u671f\u7684\u306a\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3067\u3059\u3002
\u3053\u306eGem\u306f\u3001\u30b7\u30f3\u30d7\u30eb\u3055\u3068\u67d4\u8edf\u6027\u3092\u517c\u306d\u5099\u3048\u3001Ruby\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\u4e0d\u53ef\u6b20\u306a\u5b58\u5728\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
CarrierWave\u306e\u6700\u5927\u306e\u7279\u5fb4\u306f\u3001\u305d\u306e\u4f7f\u3044\u3084\u3059\u3055\u3068\u9ad8\u5ea6\u306a\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u6027\u306e\u4e21\u7acb\u3067\u3059\u3002<\/p>\n\n\n\n
\u3053\u308c\u3089\u306e\u7279\u5fb4\u306b\u3088\u308a\u3001\u958b\u767a\u8005\u306f\u77ed\u6642\u9593\u3067\u57fa\u672c\u7684\u306a\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6a5f\u80fd\u3092\u5b9f\u88c5\u3057\u3064\u3064\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u9ad8\u5ea6\u306a\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
CarrierWave\u306e\u3082\u3046\u4e00\u3064\u306e\u5f37\u307f\u306f\u3001ActiveRecord\u3068\u306e\u512a\u308c\u305f\u7d71\u5408\u6027\u3067\u3059\u3002<\/p>\n\n\n\n
class User < ApplicationRecord\n mount_uploader :avatar, AvatarUploader\nend\n\n# \u4f7f\u7528\u4f8b\nuser = User.new\nuser.avatar = params[:file] # \u30d5\u30a1\u30a4\u30eb\u3092\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\nuser.save!\nuser.avatar.url # => '\/uploads\/user\/avatar\/1\/file.jpg'\nuser.avatar.current_path # => 'path\/to\/file.jpg'\nuser.avatar? # => true<\/pre>\n\n\n\n\u3053\u306e\u3088\u3046\u306b\u3001\u30e2\u30c7\u30eb\u306b\u76f4\u63a5\u30a2\u30c3\u30d7\u30ed\u30fc\u30c0\u30fc\u3092\u30de\u30a6\u30f3\u30c8\u3067\u304d\u3001ActiveRecord\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3084\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u3068\u9023\u643a\u304c\u53ef\u80fd\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u51e6\u7406\u3092\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u306b\u81ea\u7136\u306b\u7d44\u307f\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
CarrierWave\u306f\u3001\u4ed6\u306e\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u6bd4\u8f03\u3057\u3066\u3082\u3001\u591a\u304f\u306e\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u3002
\u4f8b\u3048\u3070\u3001\u304b\u3064\u3066\u4eba\u6c17\u3060\u3063\u305fPaperclip\u306f\u3059\u3067\u306b\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u304c\u7d42\u4e86\u3057\u3066\u3044\u307e\u3059\u304c\u3001CarrierWave\u306f\u6d3b\u767a\u306b\u958b\u767a\u304c\u7d9a\u3051\u3089\u308c\u3066\u3044\u307e\u3059\u3002
\u307e\u305f\u3001\u3088\u308a\u65b0\u3057\u3044Shrine\u3068\u6bd4\u3079\u308b\u3068\u3001CarrierWave\u306f\u8a2d\u5b9a\u304c\u7c21\u5358\u3067\u3001\u591a\u304f\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u4f7f\u7528\u5b9f\u7e3e\u304c\u3042\u308b\u3068\u3044\u3046\u5f37\u307f\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\nCarrierWave\u306f\u3001\u305d\u306e\u9769\u65b0\u7684\u306a\u6a5f\u80fd\u3068\u4f7f\u3044\u3084\u3059\u3055\u306b\u3088\u308a\u3001Ruby\u3067\u306e\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u51e6\u7406\u306b\u9769\u547d\u3092\u3082\u305f\u3089\u3057\u307e\u3057\u305f\u3002
\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u306e\u30d1\u30ef\u30d5\u30eb\u306aGem\u306e\u5177\u4f53\u7684\u306a\u4f7f\u3044\u65b9\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<\/i>CarrierWave\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3068\u57fa\u672c\u8a2d\u5b9a<\/span><\/span><\/h2>\n\n\n\n
CarrierWave\u3092\u4f7f\u3044\u59cb\u3081\u308b\u306e\u306f\u975e\u5e38\u306b\u7c21\u5358\u3067\u3059\u3002
\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001CarrierWave\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u304b\u3089\u57fa\u672c\u7684\u306a\u8a2d\u5b9a\u307e\u3067\u3001\u30b9\u30c6\u30c3\u30d7\u30d0\u30a4\u30b9\u30c6\u30c3\u30d7\u3067\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\nGemfile\u3078\u306e\u8ffd\u52a0\u3068\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u624b\u9806<\/h3>\n\n\n\n
\u307e\u305a\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306eGemfile\u306bCarrierWave\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
gem 'carrierwave', '~> 2.0'<\/pre>\n\n\n\n\u6b21\u306b\u3001\u30bf\u30fc\u30df\u30ca\u30eb\u3067\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
bundle install<\/pre>\n\n\n\n\u753b\u50cf\u51e6\u7406\u3092\u884c\u3046\u5834\u5408\u306f\u3001\u8ffd\u52a0\u3067MiniMagick\u306a\u3069\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3082\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n
gem 'mini_magick'<\/pre>\n\n\n\n\u30a2\u30c3\u30d7\u30ed\u30fc\u30c0\u30fc\u30af\u30e9\u30b9\u306e\u4f5c\u6210\u3068\u8a2d\u5b9a<\/h3>\n\n\n\n
CarrierWave\u306e\u4e2d\u5fc3\u3068\u306a\u308b\u306e\u304c\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c0\u30fc\u30af\u30e9\u30b9\u3067\u3059\u3002\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3067\u751f\u6210\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
rails generate uploader Avatar<\/pre>\n\n\n\n\u751f\u6210\u3055\u308c\u305f\u30a2\u30c3\u30d7\u30ed\u30fc\u30c0\u30fc\u30af\u30e9\u30b9\uff08app\/uploaders\/avatar_uploader.rb\uff09\u306b\u3001\u57fa\u672c\u7684\u306a\u8a2d\u5b9a\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
class AvatarUploader < CarrierWave::Uploader::Base\n # \u30b9\u30c8\u30ec\u30fc\u30b8\u306e\u9078\u629e\uff08:file\u306f\u30ed\u30fc\u30ab\u30eb\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u3001:fog\u306f\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8\uff09\n storage :file\n\n # \u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u30d5\u30a1\u30a4\u30eb\u306e\u4fdd\u5b58\u5148\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\n def store_dir\n \"uploads\/#{model.class.to_s.underscore}\/#{mounted_as}\/#{model.id}\"\n end\n\n # \u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u53ef\u80fd\u306a\u62e1\u5f35\u5b50\u306e\u30ea\u30b9\u30c8\n def extension_allowlist\n %w(jpg jpeg gif png)\n end\n\n # \u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u306e\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u5909\u66f4\n def filename\n \"something.jpg\" if original_filename\n end\nend<\/pre>\n\n\n\n\u3053\u308c\u3089\u306e\u8a2d\u5b9a\u306b\u3088\u308a\u3001\u57fa\u672c\u7684\u306a\u30d5\u30a1\u30a4\u30eb\u306e\u4fdd\u5b58\u5834\u6240\u3084\u8a31\u53ef\u3059\u308b\u62e1\u5f35\u5b50\u306a\u3069\u3092\u5236\u5fa1\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\u30e2\u30c7\u30eb\u3068\u306e\u95a2\u9023\u4ed8\u3051\u65b9\u6cd5<\/h3>\n\n\n\n
\u30a2\u30c3\u30d7\u30ed\u30fc\u30c0\u30fc\u3092\u4f5c\u6210\u3057\u305f\u3089\u3001\u305d\u308c\u3092\u30e2\u30c7\u30eb\u3068\u95a2\u9023\u4ed8\u3051\u307e\u3059\u3002<\/p>\n\n\n\n
class User < ApplicationRecord\n mount_uploader :avatar, AvatarUploader\nend<\/pre>\n\n\n\n\u3053\u306e\u95a2\u9023\u4ed8\u3051\u306b\u3088\u308a\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
CarrierWave\u306e3\u3064\u306e\u5229\u70b9<\/div>\n\n
- ActiveRecord\u3068\u306e\u81ea\u7136\u306a\u7d71\u5408<\/li>\n\n\n\n
- \u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u306e\u9069\u7528\u304c\u5bb9\u6613\uff08\u4f8b\uff1a\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3084\u5f62\u5f0f\u306e\u5236\u9650\uff09<\/li>\n\n\n\n
- \u30d5\u30a1\u30a4\u30eb\u306e\u7ba1\u7406\u304c\u7c21\u5358\uff08\u4fdd\u5b58\u3001\u66f4\u65b0\u3001\u524a\u9664\u304c\u81ea\u52d5\u7684\u306b\u51e6\u7406\u3055\u308c\u308b\uff09<\/li>\n<\/ol>\n<\/div><\/div>\n\n\n\n
\u4f7f\u7528\u4f8b\u3092\u4ee5\u4e0b\u306b\u8a18\u8f09\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
user = User.new\nuser.avatar = params[:file] # \u30d5\u30a1\u30a4\u30eb\u3092\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\nuser.save!\nuser.avatar.url # => '\/uploads\/user\/avatar\/1\/file.jpg'<\/pre>\n\n\n\n\u3088\u304f\u4f7f\u7528\u3055\u308c\u308b\u521d\u671f\u8a2d\u5b9a\u30aa\u30d7\u30b7\u30e7\u30f3<\/h3>\n\n\n\n
CarrierWave\u306b\u306f\u591a\u304f\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u3042\u308a\u307e\u3059\u3002
\u4ee5\u4e0b\u306f\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b\u8a2d\u5b9a\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u4fdd\u5b58\u5148\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u5909\u66f4<\/h4>\n\n\n\n
def store_dir\n \"custom\/upload\/path\/#{model.id}\"\n end<\/pre>\n\n\n\n\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u53ef\u80fd\u306a\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u306e\u5236\u9650<\/h4>\n\n\n\n
def size_range\n 1.byte..5.megabytes\n end<\/pre>\n\n\n\n\u753b\u50cf\u306e\u30ea\u30b5\u30a4\u30ba\u8a2d\u5b9a\uff08MiniMagick\u3092\u4f7f\u7528\uff09<\/h4>\n\n\n\n
include CarrierWave::MiniMagick\n\n process resize_to_fit: [800, 800]<\/pre>\n\n\n\n\u30d5\u30a1\u30a4\u30eb\u540d\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba<\/h4>\n\n\n\n
def filename\n \"#{secure_token}.#{file.extension}\" if original_filename.present?\n end\n\n protected\n def secure_token\n var = :\"@#{mounted_as}_secure_token\"\n model.instance_variable_get(var) or model.instance_variable_set(var, SecureRandom.uuid)\n end<\/pre>\n\n\n\n\u3053\u308c\u3089\u306e\u8a2d\u5b9a\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u8981\u4ef6\u306b\u5408\u308f\u305b\u305f\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6a5f\u80fd\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
CarrierWave\u306e\u57fa\u672c\u7684\u306a\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3068\u8a2d\u5b9a\u306f\u4ee5\u4e0a\u3067\u3059\u3002
\u3053\u308c\u3089\u306e\u624b\u9806\u3092\u8e0f\u3080\u3053\u3068\u3067\u3001Ruby\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u5805\u7262\u3067\u67d4\u8edf\u306a\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6a5f\u80fd\u3092\u7c21\u5358\u306b\u8ffd\u52a0\u3067\u304d\u307e\u3059\u3002
\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3088\u308a\u5177\u4f53\u7684\u306a\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u306e\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<\/i>\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u306e\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af<\/span><\/span><\/h2>\n\n\n\n
CarrierWave\u3092\u4f7f\u7528\u3057\u305f\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u306e\u5b9f\u88c5\u306b\u306f\u3001\u69d8\u3005\u306a\u30c6\u30af\u30cb\u30c3\u30af\u304c\u3042\u308a\u307e\u3059\u3002
\u3053\u3053\u3067\u306f\u3001\u5358\u4e00\u30d5\u30a1\u30a4\u30eb\u306e\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3001\u8907\u6570\u30d5\u30a1\u30a4\u30eb\u306e\u540c\u6642\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3001\u305d\u3057\u3066\u30c9\u30e9\u30c3\u30b0\uff06\u30c9\u30ed\u30c3\u30d7\u306b\u3088\u308b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u306e\u5b9f\u88c5\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n\u5358\u4e00\u30d5\u30a1\u30a4\u30eb\u306e\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u51e6\u7406<\/h3>\n\n\n\n
\u5358\u4e00\u30d5\u30a1\u30a4\u30eb\u306e\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u306f\u3001CarrierWave\u306e\u57fa\u672c\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u3067\u3059\u3002
\u4ee5\u4e0b\u306e\u624b\u9806\u3067\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n\u30d3\u30e5\u30fc\u306b\u30d5\u30a1\u30a4\u30eb\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u8ffd\u52a0<\/h4>\n\n\n\n
<%= form_with(model: @user, local: true) do |form| %>\n <%= form.file_field :avatar %>\n <%= form.submit '\u4fdd\u5b58' %>\n<% end %><\/pre>\n\n\n\n\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u3067\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u53d7\u3051\u53d6\u308a<\/h4>\n\n\n\n
def create\n @user = User.new(user_params)\n if @user.save\n redirect_to @user, notice: '\u30e6\u30fc\u30b6\u30fc\u304c\u4f5c\u6210\u3055\u308c\u307e\u3057\u305f\u3002'\n else\n render :new\n end\nend\n\nprivate\n\ndef user_params\n params.require(:user).permit(:name, :email, :avatar)\nend<\/pre>\n\n\n\n\u30e2\u30c7\u30eb\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c0\u30fc\u3092\u95a2\u9023\u4ed8\u3051<\/h4>\n\n\n\n
class User < ApplicationRecord\n mount_uploader :avatar, AvatarUploader\nend<\/pre>\n\n\n\n\u3053\u306e\u5b9f\u88c5\u306b\u3088\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u753b\u50cf\u306a\u3069\u306e\u5358\u4e00\u30d5\u30a1\u30a4\u30eb\u3092\u7c21\u5358\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\u8907\u6570\u30d5\u30a1\u30a4\u30eb\u306e\u540c\u6642\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u5bfe\u5fdc<\/h3>\n\n\n\n
\u8907\u6570\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u540c\u6642\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3059\u308b\u5834\u5408\u3001\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\u30d3\u30e5\u30fc\u3067\u8907\u6570\u30d5\u30a1\u30a4\u30eb\u306e\u9078\u629e\u3092\u53ef\u80fd\u306b\u3059\u308b<\/h4>\n\n\n\n
<%= form_with(model: @product, local: true) do |form| %>\n <%= form.file_field :images, multiple: true %>\n <%= form.submit '\u4fdd\u5b58' %>\n<% end %><\/pre>\n\n\n\n\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u3067\u8907\u6570\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u51e6\u7406<\/h4>\n\n\n\n
def create\n @product = Product.new(product_params)\n if @product.save\n params[:images]&.each { |image| @product.images.create(file: image) }\n redirect_to @product, notice: '\u88fd\u54c1\u304c\u4f5c\u6210\u3055\u308c\u307e\u3057\u305f\u3002'\n else\n render :new\n end\nend\n\nprivate\n\ndef product_params\n params.require(:product).permit(:name, :description)\nend<\/pre>\n\n\n\n\u30e2\u30c7\u30eb\u306b\u8907\u6570\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u95a2\u9023\u4ed8\u3051\u308b<\/h4>\n\n\n\n
class Product < ApplicationRecord\n has_many :images\nend\n\nclass Image < ApplicationRecord\n belongs_to :product\n mount_uploader :file, ImageUploader\nend<\/pre>\n\n\n\n\u3053\u306e\u65b9\u6cd5\u306b\u3088\u308a\u3001\u4f8b\u3048\u3070\u88fd\u54c1\u30ab\u30bf\u30ed\u30b0\u30b5\u30a4\u30c8\u3067\u8907\u6570\u306e\u5546\u54c1\u753b\u50cf\u3092\u4e00\u5ea6\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\u30c9\u30e9\u30c3\u30b0\uff06\u30c9\u30ed\u30c3\u30d7\u306b\u3088\u308b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9UX\u306e\u5411\u4e0a<\/h3>\n\n\n\n
\u30c9\u30e9\u30c3\u30b0\uff06\u30c9\u30ed\u30c3\u30d7\u306b\u3088\u308b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u4f53\u9a13\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002
\u4ee5\u4e0b\u306e\u624b\u9806\u3067\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\nJavaScript\u30e9\u30a4\u30d6\u30e9\u30ea\uff08\u4f8b\uff1aDropzone.js\uff09\u3092\u5c0e\u5165<\/h4>\n\n\n\n
<script src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/dropzone\/5.7.2\/min\/dropzone.min.js\"><\/script>\n<link rel=\"stylesheet\" href=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/dropzone\/5.7.2\/dropzone.min.css\"><\/pre>\n\n\n\n\u30c9\u30e9\u30c3\u30b0\uff06\u30c9\u30ed\u30c3\u30d7\u30a8\u30ea\u30a2\u306e\u8a2d\u5b9a<\/h4>\n\n\n\n
<%= form_with(model: @product, local: true, html: { class: 'dropzone', id: 'product-images' }) do |form| %>\n <div class=\"fallback\">\n <%= form.file_field :images, multiple: true %>\n <\/div>\n<% end %><\/pre>\n\n\n\nJavaScript\u3067Dropzone\u306e\u8a2d\u5b9a<\/h4>\n\n\n\n
Dropzone.options.productImages = {\n paramName: \"images\",\n maxFilesize: 2, \/\/ MB\n acceptedFiles: \"image\/*\",\n addRemoveLinks: true,\n dictDefaultMessage: \"\u3053\u3053\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u30c9\u30e9\u30c3\u30b0\uff06\u30c9\u30ed\u30c3\u30d7\u3057\u3066\u304f\u3060\u3055\u3044\",\n init: function() {\n this.on(\"success\", function(file, response) {\n \/\/ \u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6210\u529f\u6642\u306e\u51e6\u7406\n });\n }\n};<\/pre>\n\n\n\n\u3053\u306e\u5b9f\u88c5\u306b\u3088\u308a\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\n
- \u30e6\u30fc\u30b6\u30fc\u4f53\u9a13\u306e\u5927\u5e45\u306a\u5411\u4e0a<\/li>\n\n\n\n
- \u8907\u6570\u30d5\u30a1\u30a4\u30eb\u306e\u52b9\u7387\u7684\u306a\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9<\/li>\n\n\n\n
- \u30d7\u30ed\u30b0\u30ec\u30b9\u30d0\u30fc\u306b\u3088\u308b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u72b6\u6cc1\u306e\u53ef\u8996\u5316<\/li>\n\n\n\n
- \u30d5\u30a1\u30a4\u30eb\u306e\u8ffd\u52a0\u30fb\u524a\u9664\u304c\u5bb9\u6613<\/li>\n<\/ul>\n\n\n\n
\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u69d8\u3005\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306b\u5bfe\u5fdc\u3057\u305f\u67d4\u8edf\u306a\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6a5f\u80fd\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
<\/i><\/span>\u4f8b\u3048\u3070\u2026\uff1f<\/div><\/div>\n\u30e6\u30fc\u30b6\u30fc\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u30da\u30fc\u30b8\u3067\u306f\u5358\u4e00\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3001\u30d5\u30a9\u30c8\u30ae\u30e3\u30e9\u30ea\u30fc\u30a2\u30d7\u30ea\u3067\u306f\u8907\u6570\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3001\u305d\u3057\u3066\u5927\u5bb9\u91cf\u30d5\u30a1\u30a4\u30eb\u5171\u6709\u30b5\u30fc\u30d3\u30b9\u3067\u306f\u30c9\u30e9\u30c3\u30b0\uff06\u30c9\u30ed\u30c3\u30d7\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3092\u4f7f\u7528\u3059\u308b\u306a\u3069\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8981\u4ef6\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u65b9\u6cd5\u3092\u9078\u629e\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div><\/div><\/div>\n\n\n\n
\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3055\u308c\u305f\u753b\u50cf\u306e\u51e6\u7406\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
<\/i>\u753b\u50cf\u51e6\u7406\u6a5f\u80fd\u306e\u6d3b\u7528\u6cd5<\/span><\/span><\/h2>\n\n\n\n
CarrierWave\u306e\u5f37\u529b\u306a\u6a5f\u80fd\u306e\u4e00\u3064\u306b\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3055\u308c\u305f\u753b\u50cf\u306e\u81ea\u52d5\u51e6\u7406\u304c\u3042\u308a\u307e\u3059\u3002
RMagick\u3084MiniMagick\u306a\u3069\u306e\u753b\u50cf\u51e6\u7406\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u9023\u643a\u3059\u308b\u3053\u3068\u3067\u3001\u30b5\u30e0\u30cd\u30a4\u30eb\u751f\u6210\u3001\u30ea\u30b5\u30a4\u30ba\u3001\u5f62\u5f0f\u5909\u63db\u3001\u54c1\u8cea\u8abf\u6574\u306a\u3069\u3092\u7c21\u5358\u306b\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
\u3053\u3053\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u6a5f\u80fd\u306e\u6d3b\u7528\u6cd5\u3092\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n\u30b5\u30e0\u30cd\u30a4\u30eb\u751f\u6210\u306b\u3088\u308b\u8868\u793a\u306e\u6700\u9069\u5316<\/h3>\n\n\n\n
\u30b5\u30e0\u30cd\u30a4\u30eb\u306f\u3001\u753b\u50cf\u4e00\u89a7\u8868\u793a\u3084\u30d7\u30ec\u30d3\u30e5\u30fc\u306b\u6b20\u304b\u305b\u307e\u305b\u3093\u3002
CarrierWave\u3067\u306f\u3001version<\/code>\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u7c21\u5358\u306b\u30b5\u30e0\u30cd\u30a4\u30eb\u3092\u751f\u6210\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\nclass ImageUploader < CarrierWave::Uploader::Base\n include CarrierWave::MiniMagick\n\n version :thumb do\n process resize_to_fit: [50, 50]\n end\nend<\/pre>\n\n\n\n\u3053\u306e\u8a2d\u5b9a\u306b\u3088\u308a\u3001\u30aa\u30ea\u30b8\u30ca\u30eb\u753b\u50cf\u3068\u306f\u5225\u306b50\u00d750\u30d4\u30af\u30bb\u30eb\u306e\u30b5\u30e0\u30cd\u30a4\u30eb\u304c\u81ea\u52d5\u751f\u6210\u3055\u308c\u307e\u3059\u3002
\u4f7f\u7528\u6642\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<%= image_tag @image.file.thumb.url %><\/pre>\n\n\n\n\u3053\u308c\u306b\u3088\u308a\u3001\u4e00\u89a7\u8868\u793a\u306e\u9ad8\u901f\u5316\u3084\u30e2\u30d0\u30a4\u30eb\u30c7\u30d0\u30a4\u30b9\u3067\u306e\u8868\u793a\u6700\u9069\u5316\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u753b\u50cf\u30ea\u30b5\u30a4\u30ba\u3068\u5f62\u5f0f\u5909\u63db\u306e\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n
CarrierWave\u3067\u306f\u3001\u69d8\u3005\u306a\u753b\u50cf\u30ea\u30b5\u30a4\u30ba\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
resize_to_fit<\/code>: \u30a2\u30b9\u30da\u30af\u30c8\u6bd4\u3092\u7dad\u6301\u3057\u306a\u304c\u3089\u3001\u6307\u5b9a\u30b5\u30a4\u30ba\u306b\u53ce\u3081\u307e\u3059\u3002<\/h4>\n\n\n\nprocess resize_to_fit: [800, 600]<\/pre>\n\n\n\n
resize_to_fill<\/code>: \u6307\u5b9a\u30b5\u30a4\u30ba\u306b\u3074\u3063\u305f\u308a\u5408\u308f\u305b\u3066\u5207\u308a\u629c\u304d\u307e\u3059\u3002<\/h4>\n\n\n\nprocess resize_to_fill: [400, 400]<\/pre>\n\n\n\n
resize_and_pad<\/code>: \u6307\u5b9a\u30b5\u30a4\u30ba\u306b\u53ce\u3081\u3001\u4f59\u767d\u3092\u57cb\u3081\u307e\u3059\u3002<\/h4>\n\n\n\nprocess resize_and_pad: [500, 500, background: :transparent]<\/pre>\n\n\n\n\u753b\u50cf\u5f62\u5f0f\u306e\u5909\u63db\u3082\u7c21\u5358\u306b\u884c\u3048\u307e\u3059\u3002<\/p>\n\n\n\n
process convert: 'png'<\/pre>\n\n\n\n\u3053\u308c\u306b\u3088\u308a\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3055\u308c\u305f\u753b\u50cf\u3092\u81ea\u52d5\u7684\u306bPNG\u5f62\u5f0f\u306b\u5909\u63db\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\u753b\u50cf\u306e\u54c1\u8cea\u8abf\u6574\u3068\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u6700\u9069\u5316<\/h3>\n\n\n\n
\u753b\u50cf\u306e\u54c1\u8cea\u8abf\u6574\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u306e\u6700\u9069\u5316\u306b\u91cd\u8981\u3067\u3059\u3002
JPEG\u753b\u50cf\u306e\u5834\u5408\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u54c1\u8cea\u3092\u8abf\u6574\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\nprocess quality: 85<\/pre>\n\n\n\nPNG\u753b\u50cf\u306e\u6700\u9069\u5316\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
process :optimize<\/pre>\n\n\n\n\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u306e\u6700\u9069\u5316\u306f\u3001\u753b\u50cf\u306e\u30ea\u30b5\u30a4\u30ba\u3068\u54c1\u8cea\u8abf\u6574\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u52b9\u679c\u7684\u306b\u884c\u3048\u307e\u3059\u3002<\/p>\n\n\n\n
process resize_to_limit: [1920, 1080]\nprocess quality: 85<\/pre>\n\n\n\n\u3053\u308c\u306b\u3088\u308a\u3001\u5927\u304d\u3059\u304e\u308b\u753b\u50cf\u3092\u9069\u5207\u306a\u30b5\u30a4\u30ba\u306b\u7e2e\u5c0f\u3057\u3001\u3055\u3089\u306b\u54c1\u8cea\u3092\u8abf\u6574\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3092\u524a\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\u753b\u50cf\u51e6\u7406\u306e3\u3064\u306e\u5229\u70b9<\/div>\n\n
- \u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a<\/strong>\uff1a\u6700\u9069\u5316\u3055\u308c\u305f\u753b\u50cf\u306f\u30ed\u30fc\u30c9\u6642\u9593\u3092\u77ed\u7e2e\u3057\u307e\u3059\u3002<\/li>\n\n\n\n
- \u30b9\u30c8\u30ec\u30fc\u30b8\u4f7f\u7528\u91cf\u306e\u524a\u6e1b<\/strong>\uff1a\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u306e\u6700\u9069\u5316\u306b\u3088\u308a\u3001\u30b9\u30c8\u30ec\u30fc\u30b8\u30b3\u30b9\u30c8\u3092\u6291\u3048\u3089\u308c\u307e\u3059\u3002<\/li>\n\n\n\n
- \u30e6\u30fc\u30b6\u30fc\u4f53\u9a13\u306e\u5411\u4e0a<\/strong>\uff1a\u9069\u5207\u306b\u30ea\u30b5\u30a4\u30ba\u3055\u308c\u305f\u753b\u50cf\u306f\u3001\u69d8\u3005\u306a\u30c7\u30d0\u30a4\u30b9\u3067\u898b\u3084\u3059\u304f\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n<\/div><\/div>\n\n\n\n
\u305f\u3060\u3057\u3001\u753b\u50cf\u51e6\u7406\u306b\u306f\u30b5\u30fc\u30d0\u30fc\u30ea\u30bd\u30fc\u30b9\u3092\u6d88\u8cbb\u3059\u308b\u305f\u3081\u3001\u5927\u91cf\u306e\u753b\u50cf\u3092\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3059\u308b\u5834\u5408\u306f\u3001\u975e\u540c\u671f\u51e6\u7406\u3092\u691c\u8a0e\u3059\u308b\u306a\u3069\u306e\u5bfe\u7b56\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n
\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001CarrierWave\u306e\u3088\u308a\u9ad8\u5ea6\u306a\u8a2d\u5b9a\u3068\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u65b9\u6cd5\u306b\u3064\u3044\u3066\u6df1\u6398\u308a\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
<\/i>\u9ad8\u5ea6\u306a\u8a2d\u5b9a\u3068\u30ab\u30b9\u30bf\u30de\u30a4\u30ba<\/span><\/span><\/h2>\n\n\n\n
CarrierWave\u306f\u3001\u57fa\u672c\u7684\u306a\u6a5f\u80fd\u306b\u52a0\u3048\u3066\u3001\u9ad8\u5ea6\u306a\u8a2d\u5b9a\u3084\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u304c\u53ef\u80fd\u3067\u3059\u3002
\u3053\u308c\u306b\u3088\u308a\u3001\u7279\u5b9a\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u8981\u4ef6\u306b\u5408\u308f\u305b\u3066\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6a5f\u80fd\u3092\u7d30\u304b\u304f\u8abf\u6574\u3067\u304d\u307e\u3059\u3002
\u3053\u3053\u3067\u306f\u3001\u30b9\u30c8\u30ec\u30fc\u30b8\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306e\u9078\u629e\u3001\u30d5\u30c3\u30af\u51e6\u7406\u3001\u30ab\u30b9\u30bf\u30e0\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u306a\u3069\u306e\u9ad8\u5ea6\u306a\u8a2d\u5b9a\u65b9\u6cd5\u3092\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n\u30b9\u30c8\u30ec\u30fc\u30b8\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306e\u9078\u629e\u3068\u8a2d\u5b9a<\/h3>\n\n\n\n
CarrierWave\u306f\u8907\u6570\u306e\u30b9\u30c8\u30ec\u30fc\u30b8\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002
\u4e3b\u306a\u9078\u629e\u80a2\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n\n
- \u30ed\u30fc\u30ab\u30eb\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\uff09<\/li>\n\n\n\n
- Amazon S3<\/li>\n\n\n\n
- Google Cloud Storage<\/li>\n<\/ol>\n\n\n\n
\u30ed\u30fc\u30ab\u30eb\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
class MyUploader < CarrierWave::Uploader::Base\n storage :file\nend<\/pre>\n\n\n\n\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8\uff08\u4f8b\uff1aAmazon S3\uff09\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f\u3001fog gem\u3092\u5229\u7528\u3057\u3066\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
CarrierWave.configure do |config|\n config.fog_credentials = {\n provider: 'AWS',\n aws_access_key_id: 'YOUR_ACCESS_KEY',\n aws_secret_access_key: 'YOUR_SECRET_KEY',\n region: 'us-east-1'\n }\n config.fog_directory = 'your-bucket-name'\n config.fog_public = false\n config.fog_attributes = { cache_control: \"public, max-age=#{365.days.to_i}\" }\nend\n\nclass MyUploader < CarrierWave::Uploader::Base\n storage :fog\nend<\/pre>\n\n\n\n\u3053\u306e\u8a2d\u5b9a\u306b\u3088\u308a\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u304c\u81ea\u52d5\u7684\u306bAmazon S3\u306b\u4fdd\u5b58\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u524d\u5f8c\u306e\u51e6\u7406\u3092\u30d5\u30c3\u30af\u3067\u5236\u5fa1<\/h3>\n\n\n\n
CarrierWave\u3067\u306f\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u306e\u524d\u5f8c\u306b\u7279\u5b9a\u306e\u51e6\u7406\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306e\u30d5\u30c3\u30af\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002
\u3053\u308c\u3089\u306e\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30d5\u30a1\u30a4\u30eb\u51e6\u7406\u306e\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n\u4f8b\u3048\u3070\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u524d\u306b\u30ad\u30e3\u30c3\u30b7\u30e5ID\u3092\u8a18\u61b6\u3057\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u5f8c\u306b\u53e4\u3044\u4e00\u6642\u30d5\u30a1\u30a4\u30eb\u3092\u524a\u9664\u3059\u308b\u51e6\u7406\u3092\u8ffd\u52a0\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
class MyUploader < CarrierWave::Uploader::Base\n before :store, :remember_cache_id\n after :store, :delete_old_tmp_file\n\n def remember_cache_id(new_file)\n @cache_id_was = cache_id\n end\n\n def delete_old_tmp_file(new_file)\n if @cache_id_was.present? && @cache_id_was != cache_id\n if @cache_id_was =~ \/\\A[\\d]{8}\\-[\\d]{4}\\-[\\d]+\\-[\\d]{4}\\z\/\n FileUtils.rm_rf(File.join(root, cache_dir, @cache_id_was))\n end\n end\n end\nend<\/pre>\n\n\n\n\u3053\u308c\u3089\u306e\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u30d7\u30ed\u30bb\u30b9\u3092\u3088\u308a\u7d30\u304b\u304f\u5236\u5fa1\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\u72ec\u81ea\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u30eb\u30fc\u30eb\u306e\u5b9f\u88c5\u65b9\u6cd5<\/h3>\n\n\n\n
CarrierWave\u3067\u306f\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3055\u308c\u308b\u30d5\u30a1\u30a4\u30eb\u306b\u5bfe\u3057\u3066\u72ec\u81ea\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u30eb\u30fc\u30eb\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002
\u4ee5\u4e0b\u306f\u3044\u304f\u3064\u304b\u306e\u4e00\u822c\u7684\u306a\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u306e\u5236\u9650<\/h4>\n\n\n\n
def size_range\n 1.byte..5.megabytes\nend<\/pre>\n\n\n\n\u8a31\u53ef\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u5f62\u5f0f\u306e\u6307\u5b9a<\/h4>\n\n\n\n
def extension_allowlist\n %w(jpg jpeg gif png)\nend<\/pre>\n\n\n\n\u753b\u50cf\u30b5\u30a4\u30ba\u306e\u30c1\u30a7\u30c3\u30af<\/h4>\n\n\n\n
def check_dimensions\n if file && model.avatar?\n if file.width != 100 || file.height != 100\n errors.add(:file, \"must be 100x100px\")\n end\n end\nend<\/pre>\n\n\n\n\u3053\u308c\u3089\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3055\u308c\u308b\u30d5\u30a1\u30a4\u30eb\u304c\u7279\u5b9a\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\u305d\u306e\u4ed6\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u4f8b<\/h3>\n\n\n\n
\u30d5\u30a1\u30a4\u30eb\u540d\u306e\u751f\u6210<\/h4>\n\n\n\n
def filename\n \"#{secure_token}.#{file.extension}\" if original_filename.present?\nend\n\nprotected\ndef secure_token\n var = :\"@#{mounted_as}_secure_token\"\n model.instance_variable_get(var) or model.instance_variable_set(var, SecureRandom.uuid)\nend<\/pre>\n\n\n\n\u4fdd\u5b58\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba<\/h4>\n\n\n\n
def store_dir\n \"uploads\/#{model.class.to_s.underscore}\/#{mounted_as}\/#{model.id}\"\nend<\/pre>\n\n\n\n\u3053\u308c\u3089\u306e\u9ad8\u5ea6\u306a\u8a2d\u5b9a\u3068\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u306b\u3088\u308a\u3001CarrierWave\u3092\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u7279\u5b9a\u306e\u8981\u4ef6\u306b\u5408\u308f\u305b\u3066\u8abf\u6574\u3067\u304d\u307e\u3059\u3002
\u305f\u3060\u3057\u3001\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3092\u884c\u3046\u969b\u306f\u4ee5\u4e0b\u306e\u70b9\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\ncarrierwave<\/code>\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u6642\u306e3\u3064\u306e\u6ce8\u610f\u70b9<\/div>\n\n
- \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/strong>\uff1a\u7279\u306b\u30d5\u30a1\u30a4\u30eb\u540d\u306e\u751f\u6210\u3084\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u3092\u8003\u616e\u3059\u308b\u3002<\/li>\n\n\n\n
- \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/strong>\uff1a\u8907\u96d1\u306a\u51e6\u7406\u3092\u8ffd\u52a0\u3059\u308b\u5834\u5408\u306f\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u901f\u5ea6\u3078\u306e\u5f71\u97ff\u3092\u8003\u616e\u3059\u308b\u3002<\/li>\n\n\n\n
- \u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027<\/strong>\uff1a\u904e\u5ea6\u306b\u8907\u96d1\u306a\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u306f\u3001\u5c06\u6765\u306e\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3092\u96e3\u3057\u304f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n
\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001CarrierWave\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n