Question

我无法弄清楚如何进行连锁转型。

给定一张图片，我想将它应用于垫片作物中。（example / doc）如下所示：

cloudinary_transformation transformation: [{ width: 450, height: 450, crop: :pad }]

然后，用户将crop the padded image with JCrop or whatever，因此我会存储crop_x，crop_y和crop_width，然后，我希望此裁剪图片具有多种尺寸，例如200x200 :thumb。

我有什么：

# Image version used for cropping
version :large do
  cloudinary_transformation transformation: [{  width: 450, height: 450, crop: :pad }]
end

# A 200x200 version of the cropped image
version :thumb do
  cloudinary_transformation transformation: [{  width: 200, height: 200, crop: :pad }]
  process :crop_thumb
end

def crop_thumb
  return { x:      model.crop_x,
           y:      model.crop_y,
           width:  model.crop_width,
           height: model.crop_width,
           crop:   :pad }
end

但结果图像的宽度为crop_width而不是200，当然......

Answer 1

以下是我最终的表现：

version :thumb do
  process :crop_thumb
end

def crop_thumb
  transformations = []
  transformations << { x: model.crop_x, y: model.crop_y, width: model.crop_width, height: model.crop_width, crop: :crop }
  transformations << { width: 200, height: 200, crop: :fill }
  { transformation: transformations }
end

CarrierWave + Cloudinary：chain transformation / crop＆amp;规模

1 个答案: