需要使用 Attachment_fu 重新处理图像的想法

发布于 2024-09-01 11:14:19 字数 198 浏览 4 评论 0原文

由于 Rails 应用程序和 gems 升级以及以前的开发人员未记录的代码，我在我的 Rails 应用程序中发现了一个错误。我有很多已经处理过的图像，但使用attachment_fu 的尺寸不正确。自升级以来上传的所有图像都需要正确调整大小。

有谁有任何想法来重新处理文件夹中的所有图像并将其调整为正确的尺寸？我不想手动完成这些工作。

谢谢！！辛迪

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卖梦商人 2024-09-08 11:14:19

我也遇到过同样的问题。这是我编写的一个小方法，用于重新生成全部内容，包括调整新缩略图的大小，以及纠正其他问题，例如损坏的父图像大小。

希望有帮助！
萨姆，
@samotage

def self.rebuild_thumbnails
    images = UserUpload.find(:all)
    processed = 0
    not_processed = 0
    puts "---------------------------------"
    puts "rebuilding thumbnails"
    puts " "
    images.each do |image|
      this_type = image.type.to_s
      puts "processing upload: #{image.id} of type: #{this_type}"
      if image.thumbnailable?
        puts "bingo! It's thumbnailable, now rebuilding."
        image.thumbnails.each { |thumbnail| thumbnail.destroy }
        puts "Re-generating main image witdh and height"
        image.save
        puts "Regenerating thumbnails..."
        image.attachment_options[:thumbnails].each { |suffix, size| image.create_or_update_thumbnail(image.create_temp_file, suffix, *size) }
        processed += 1
        puts "Now processed #{processed} images"
        puts ""
      else
        not_processed += 1
      end
    end
    return processed
  end

I've had the same problem. This is a little method I wrote to go and re-generate the whole lot, including resizing to new thumbnails, and correcting other issues like corrupt parent image sizes.

Hope it helps!
Sam,
@samotage

def self.rebuild_thumbnails
    images = UserUpload.find(:all)
    processed = 0
    not_processed = 0
    puts "---------------------------------"
    puts "rebuilding thumbnails"
    puts " "
    images.each do |image|
      this_type = image.type.to_s
      puts "processing upload: #{image.id} of type: #{this_type}"
      if image.thumbnailable?
        puts "bingo! It's thumbnailable, now rebuilding."
        image.thumbnails.each { |thumbnail| thumbnail.destroy }
        puts "Re-generating main image witdh and height"
        image.save
        puts "Regenerating thumbnails..."
        image.attachment_options[:thumbnails].each { |suffix, size| image.create_or_update_thumbnail(image.create_temp_file, suffix, *size) }
        processed += 1
        puts "Now processed #{processed} images"
        puts ""
      else
        not_processed += 1
      end
    end
    return processed
  end

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