Carrierwave为处理后的图像添加水印

发布于 2025-01-03 19:00:06 字数 577 浏览 3 评论 0原文

我尝试使用从多个资源获得的以下代码向处理后的图像添加水印：

def watermark
  manipulate! do |img|
    logo = Magick::Image.read("#{Rails.root}/assets/images/watermarks/watermark.png").first
    img = img.composite(logo, Magick::SouthEastGravity, Magick::OverCompositeOp)
  end
end

唯一的问题是，你猜对了，不起作用。我在日志/控制台中没有收到任何错误

这是我上传并调用的方法，例如：

def function
  version :thumb do
    process :resize_to_fill => [96, 96]
    process :watermark
  end
end

关于获取一些日志以了解为什么这不起作用的任何想法？我的系统（OSX）上安装了 Rmagick gems 和 Imagemagick，并且调整图像大小确实可以正常工作。

原文

Im trying to add a watermark to processed images with below code I got from several resources:

def watermark
  manipulate! do |img|
    logo = Magick::Image.read("#{Rails.root}/assets/images/watermarks/watermark.png").first
    img = img.composite(logo, Magick::SouthEastGravity, Magick::OverCompositeOp)
  end
end

Only problem is, you guess it, does not work.
I get no errors in log/console whatsoever

This is my method inside my uploaded and called like:

def function
  version :thumb do
    process :resize_to_fill => [96, 96]
    process :watermark
  end
end

Any thoughts on getting some logs on why this doesn't work? I have the Rmagick gems and Imagemagick installed on my system (OSX) And resizing of images does work correct.

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束缚ｍ 2025-01-10 19:00:06

我就是这样做的，效果很好：

# Process files as they are uploaded:
process :resize_to_fill => [850, 315]
process :convert => 'png'
process :watermark

def watermark
  manipulate! do |img|
    logo = Magick::Image.read("#{Rails.root}/app/assets/images/watermark.png").first
    img = img.composite(logo, Magick::NorthWestGravity, 15, 0, Magick::OverCompositeOp)
  end
end

I just do it this way and it works very fine:

# Process files as they are uploaded:
process :resize_to_fill => [850, 315]
process :convert => 'png'
process :watermark

def watermark
  manipulate! do |img|
    logo = Magick::Image.read("#{Rails.root}/app/assets/images/watermark.png").first
    img = img.composite(logo, Magick::NorthWestGravity, 15, 0, Magick::OverCompositeOp)
  end
end

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