Rails + Carrierwave + RMagick: crop only if the image is large

Question

I use a carrier wave to upload images. When loading, I create thumbnails for the image, which is performed using the Rmagick method, resize_to_fill, as shown below.

version :thumb do process :resize_to_fill=> [150, 150] end 

It displays all the methods RMagick carrierwave supports (none of which I want):

• :resize_to_fill => [150,150]

This works great on large images, but my smaller images are enlarged to 150 x 150.

2. :resize_to_fit => [150,150]

It has changed again, I want him to be alone!

3. :resize_to_limit => [150,150]

This leaves it as it is, but large images are not cropped. They are modified to maintain aspect ratio.

Here is the result I want and how my small and large images should look.

How to do it? I want smaller images to stay alone and crop only large images to 150 x 150. Is there any other way or parameters that I can pass to resize_to_fill?

Answer 1

I solved it by changing the method :resize_to_fill carrierwave, as described in their code here .

I just made a new method with the same validation code to reduce the loaded image. Here is a new method:

 def resize_to_fill_modfied(width, height, gravity=::Magick::CenterGravity) manipulate! do |img| img.crop_resized!(width, height, gravity) unless (img.columns <= width && img.rows <= height) img = yield(img) if block_given? img end end 

Exactly what I want now.