如何获取图像变体的高度和宽度？

Question

我需要将图片 url 返回到特定的变体，并返回这个变体图像的高度和宽度

variant = image.variant(resize: '1000x1000')
json.image_url(rails_representation_url(variant))
json.image_width # TODO: best way to receive width of variant
json.image_height # TODO: best way to receive height of variant

Answer 1

我下一个方法

variant = image.variant(resize: '1000x1000').processed
path = variant.service.path_for(variant.key)
width, height = MiniMagick::Image.new(path)[:dimensions]

json.image_url(rails_representation_url(variant))
json.image_width(width)
json.image_height(height)