在Carrierwave中重新处理不同版本的图像 [英] Reprocessing images of different versions in Carrierwave

问题描述

使用Carrierwave，我使用以下几行创建了3个版本的化身-原始图像，small_thumb和large_thumb:

Using Carrierwave, I created 3 versions of an avatar - an original, a small_thumb and a large_thumb using the following lines:

process :resize_to_limit => [400, 400]  

   version :big_thumb do
     process :resize_to_limit => [80, 80]
   end

   version :small_thumb do
     process :resize_to_limit => [50, 50]
   end

我在AvatarUploader类中添加了一个附加方法:

I added an additional method in my AvatarUploader class:

def reprocess(x,y,w,h)
        manipulate! do |img|
            img.crop(x.to_i, y.to_i, w.to_i, h.to_i, true) 

            end
resize_to_limit(180,180)  
end

在执行更新后在我的模型中调用:

which is called in my model after an update is performed:

attr_accessor :crop_x, :crop_y, :crop_w, :crop_h
after_update :reprocess_image, :if => :cropping?

def cropping?
    !crop_x.blank? && !crop_y.blank? && !crop_w.blank? && !crop_h.blank?
end

private

def reprocess_image
image.reprocess(crop_x,crop_y,crop_w,crop_h)

end

我设法裁剪并调整了原始版本的大小，但似乎无法同时更新2个缩略图.我尝试了几种不同的方法，都无济于事.

I have managed to crop and resize the original version, but I can't seem to update the 2 thumbnails along with it. I tried a few different techniques to no avail.

有什么建议吗?

推荐答案

尝试

image.recreate_versions!

对不起，在公共汽车上.我无法解释这一点.

Sorry, on the bus. I can't expound on that.

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