Last Updated: February 25, 2016

Resize image to fill or to fit depending on orientation with CarrierWave and RMagick

If you have an slider maybe you want to do a resize_to_fit when the picture's orientation is landscape and a resize_to_fillwhen is portrait. This is what Airbnb do for their pictures slider.

To do that use this in your CarrierWave Uploader (works with RMagick, it could be adapted for MiniMagick)

version :slider do
  process :create_slider_version
end

def create_slider_version
  img = Magick::Image.read(current_path)
  width = img[0].columns
  height = img[0].rows
  if width > height
    # original is landscape
    resize_to_fill(738, 492)
  else
    # original is portrait
    resize_to_fit(738, 492)
  end
end

The context for the create_slider_version method is CarrierWave::Uploader::Base (that's where the method current_path comes from).

Written by Javier Cuevas

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1 Response

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pabuisson

Thanks a lot, it helped me much for a project I'm currently working on. Here's what I came up with, using MiniMagick, in case it can help anyone.

protected
    def process_original_version
        image = ::MiniMagick::Image::read(File.binread(@file.file))

        if image[:width] > image[:height]
            resize_to_fill 1600, 1200
        else
            resize_to_fill 1200, 1600
        end
    end

over 1 year ago ·