CarrierWave、MiniMagick、ImageMagickを導入したのですが、画像投稿ができなくなってしまいました。

Question

起きている現象

CarrierWave、MiniMagick、ImageMagickを導入しましたが、導入後から画像投稿ができなくなってしまいました。正確にはアップローダーファイルに「process resize_to_fill: [300, 300, "Center"]」の記述をすると投稿ができなくなります。
この一文を消すと画像投稿自体はできるようになるので、リサイズする過程でなにかうまくいっていないのではないかと思います。
また、投稿してエラーは発生せず、もともと設定していた「投稿できませんでした」の文字が表示されます。
もし解決方法わかる方いらっしゃいましたらお力お借りしたいです。

image_uploader.rb

class ImageUploader < CarrierWave::Uploader::Base
  include CarrierWave::MiniMagick
  # Include RMagick or MiniMagick support:
  # include CarrierWave::RMagick
  if Rails.env.production?
    include Cloudinary::CarrierWave
  else
    storage :file
  end

  # 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
  # def default_url(*args)
   # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
  # end
 #この部分がアップロードした写真を設定できるようにする記述とデフォルトの写真を設定している記述

  # Provide a default URL as a default if there hasn't been a file uploaded:
  # def default_url(*args)
  #   # For Rails 3.1+ asset pipeline compatibility:
  #   # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
  #
  #   "/images/fallback/" + [version_name, "default.png"].compact.join('_')
  # end

  # Process files as they are uploaded:
  # process scale: [200, 300]
  #
  # def scale(width, height)
  #   # do something
  # end

  # Create different versions of your uploaded files:
  # version :thumb do
  #   process resize_to_fit: [50, 50]
  # end

  # Add a white list of extensions which are allowed to be uploaded.
  # For images you might use something like this:
  def extension_whitelist
     %w(jpg jpeg gif png)
  end

  # Override the filename of the uploaded files:
  # Avoid using model.id or version_name here, see uploader/store.rb for details.
  # def filename
  #   "something.jpg" if original_filename
  # end
  process resize_to_fill: [300, 300, "Center"]

end

micro posts_controller

class MicropostsController < ApplicationController
  before_action :require_user_logged_in
  before_action :correct_user, only: [:destroy, :edit]

  def index
    @microposts = Micropost.all.order(created_at: :desc)
  end

  def show
    @micropost = Micropost.find(params[:id])
  end

  def new
    @micropost = Micropost.new
  end

  def create
    @micropost = current_user.microposts.build(micropost_params)
    if @micropost.save
      flash[:success] = '投稿完了'
      redirect_to microposts_url
    else
      @microposts = Micropost.all.order(created_at: :desc)
      flash.now[:danger] = '投稿できませんでした。'
      render 'microposts/index'
    end
  end

  def destroy
    @micropost.destroy
    flash[:success] = 'メッセージ削除'
    redirect_back(fallback_location: root_path)
  end

  def update
  end

  def edit
  end


 private

 def micropost_params
   params.require(:micropost).permit(:title, :day, :content, :place, :number, :image)
 end

 def correct_user
   @micropost = current_user.microposts.find_by(id: params[:id])
   unless @micropost
     redirect_to root_url
   end
 end
end

micropost.rb

class Micropost < ApplicationRecord
  belongs_to :user
  validates :content, presence: true, length: { maximum: 1000 }
  has_many :likes, dependent: :destroy
  has_many :liked, through: :likes, source: :user
  has_many :joins
  has_many :joined, through: :joins, source: :user

  THUMBNAIL_SIZE = [300, 300]
  mount_uploader :image, ImageUploader
end

Gemfile

source 'https://rubygems.org'
git_source(:github) { |repo| "https://github.com/#{repo}.git" }

ruby '2.7.1'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.2.2'
# Use mysql as the database for Active Record
gem 'mysql2', '>= 0.4.4', '< 0.6.0'
# Use Puma as the app server
gem 'puma', '~> 3.11'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# See https://github.com/rails/execjs#readme for more supported runtimes
# gem 'mini_racer', platforms: :ruby

# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.2'
# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
gem 'turbolinks', '~> 5'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.5'
# Use Redis adapter to run Action Cable in production
# gem 'redis', '~> 4.0'
# Use ActiveModel has_secure_password
gem 'bcrypt', '~> 3.1.7'

# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development

# Reduces boot times through caching; required in config/boot.rb
gem 'bootsnap', '>= 1.1.0', require: false

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
end

group :development do
  # Access an interactive console on exception pages or by calling 'console' anywhere in the code.
  gem 'web-console', '>= 3.3.0'
  gem 'listen', '>= 3.0.5', '< 3.2'
  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  gem 'spring'
  gem 'spring-watcher-listen', '~> 2.0.0'
end


# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

#ページネーション
gem 'kaminari'

# Fontawsome
# gem 'font-awesome-sass', '~> 5.4.1'

# 画像用
gem 'carrierwave', '~> 1.3', '>= 1.3.1'
gem 'mini_magick'
gem 'cloudinary'
gem 'rmagick'

# JQUERY導入
gem 'jquery-rails'

Answer 1

version :thumb do
  process resize_to_fill: [300, 300, "Center"]
end

参考記事:https://qiita.com/ryo-ichikawa/items/6fbb66b8ecfdd0f1f9c4

Comments

[amby]

uploaderにrequire 'mini_magick'を記述していなかったことが原因のようでした。投稿できるようになりました。親切にご教示いただきありがとうございました。