Thor::Group:Class 的未定义方法“find_each”

Question

我编写了一个 Thor 任务，该任务应该遍历所有利用 find_each 的用户。但我收到此错误消息： Thor::Group:Class`

的未定义方法 find_each

为什么这里 find_each 不可用？运行 User.find_each { |u| puts u.name } 在 rails 控制台中工作。

class CloudImages < Thor
  require "./config/environment.rb"

  desc "save_user_avatar_urls", "Save existing AWS user avatars"
  def save_user_avatar_urls
    User.find_each do |user|
      next if user.avatar_url.blank?

      path      = URI(user.avatar_url).path
      image_url = $DOMAIN + path

      user.update_attribute(:aws_avatar_url, image_url)
    end
  end

end

Answer 1

将User更改为::User

class CloudImages < Thor
  require "./config/environment.rb"

  desc "save_user_avatar_urls", "Save existing AWS user avatars"
  def save_user_avatar_urls
    ::User.find_each do |user|
      next if user.avatar_url.blank?

      # ...
    end
  end
end

Thor::Group:Class 的未定义方法“find_each”

undefined method `find_each' for Thor::Group:Class

ruby-on-rails

thor