CarrierWave - Set width and max height of images

Question

I use CarrierWave and I want to resize the images to a width of 220px and a max-height of 220px. If I use process :resize_to_fit => [220,220] it could be that the width is not 220px. What can I do?

Answer 1

An improvment of Andy H's answer:

process :resize => [220, 220]

protected

def resize(width, height, gravity = 'Center')
  manipulate! do |img|
    img.combine_options do |cmd|
      cmd.resize "#{width}"
      if img[:width] < img[:height]
        cmd.gravity gravity
        cmd.background "rgba(255,255,255,0.0)"
        cmd.extent "#{width}x#{height}"
      end
    end
    img = yield(img) if block_given?
    img
  end
end