ruby-on-rails-6 - 无法使用 ActiveStorage 在循环中创建或更新记录

Question

红宝石 2.6.3 轨道 6.0.3

我不知道为什么，当我尝试在循环中创建或更新记录，添加一个或多个附件时，只能更新一两个记录。我还仅使用一个附件测试了此行为，并且仅用于创建。但是行为是一样的。在下面的代码中，我正在尝试使用活动存储在 aws 上重新加载附件。但只有 1 条记录被更新。

namespace :uploads do
  task migrate_to_active_storage: :environment do
    Upload.where.not(csv_file_name: nil).find_each do |upload|
      %w[csv log].map do |attachment_type|
        attach_url = [
          'https://',
          ENV['AWS_BUCKET'],
          ".s3-#{ENV['AWS_REGION']}.amazonaws.com/",
          upload.business.normalized_name,
          '/upload/',
          upload.id.to_s,
          "/#{attachment_type}/",
          upload.csv_file_name
        ].join

        upload.send(attachment_type).attach(
          io: open(attach_url),
          filename: upload["#{attachment_type}_file_name"],
          content_type: upload["#{attachment_type}_content_type"]
        )
      end
    end
    ap 'DONe WITH SUCCESS' # never appears
  end
end

我已经设法解决了这个问题，使用 threds。但我不知道为什么它在上面的代码中不起作用。此解决方案工作正常。

 namespace :uploads do
  task migrate_to_active_storage: :environment do
    uploads = Thread.new { Upload.ids }.value

    uploads.each do |id|
      Thread.new do
        sleep 2
        upload = Upload.find id

        upload.update csv: get_attachment(upload, 'csv'),
                      log: get_attachment(upload, 'log')
      end.join
    end
  end
end

def get_attachment(upload, attachment_type)
  attachment_url = [
    'https://',
    ENV['AWS_BUCKET'],
    ".s3-#{ENV['AWS_REGION']}.amazonaws.com/",
    upload.business.normalized_name,
    '/upload/',
    upload.id.to_s,
    "/#{attachment_type}/",
    upload["#{attachment_type}_file_name"]
  ].join

  {
    io: open(attachment_url),
    filename: "#{upload.id}_#{upload["#{attachment_type}_file_name"]}",
    content_type: upload["#{attachment_type}_content_type"]
  }
end

什么是真正的神秘主义者。例如，当我尝试调用不同的模型时，例如 User。即使它什么都不做，上面的代码也不起作用。只有 1 条记录将被更新。

标签： ruby-on-rails-6rails-activestorage