Carrierwave: how to crop and resize so that the final picture has exactly the same width and height? - ruby-on-rails-3

Question

I'm using Rails 3 with carrierwave and Rmagick.
I want the picture to be resized exactly to 192 x 135
This seamed simple at first but nothing I tried worked until now.
Anyone found a solution for this? Here is my code for the uploader.
class AvatarUploader < CarrierWave::Uploader::Base
#Include RMagick or MiniMagick support:
include CarrierWave::RMagick
include CarrierWave::MiniMagick
# Choose what kind of storage to use for this uploader:
storage :file
# storage :fog
def store_dir
"uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
end
# Provide a default URL as a default if there hasn't been a file uploaded:
def default_url
# # For Rails 3.1+ asset pipeline compatibility:
ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
#
# "/images/fallback/" + [version_name, "default.png"].compact.join('_')
end
process :resize_to_fit => [250, 250]
# Process files as they are uploaded:
# process :scale => [200, 300]
#
# def scale(width, height)
# # do something
# end
# Create different versions of your uploaded files:
version :thumb do
process :resize_to_fit => [200, 200]
end
version :medium do
process :resize_to_fit => [250, 250]
end
version :mini do
process :resize_to_fit => [100, nil]
process crop: '100x100+0+0'
end
version :grid do
process :resize_to_fit => [192, 135]
process crop: '192x135+0+0'
end
# Add a white list of extensions which are allowed to be uploaded.
# For images you might use something like this:
# def extension_white_list
# %w(jpg jpeg gif png)
# end
# Override the filename of the uploaded files:
# Avoid using model.id or version_name here, see uploader/store.rb for details.
# def filename
# "something.jpg" if original_filename
# end
private
# Simplest way
def crop(geometry)
manipulate! do |img|
img.crop(geometry)
img
end
end
# Resize and crop square from Center
def resize_and_crop(size)
manipulate! do |image|
if image[:width] < image[:height]
remove = ((image[:height] - image[:width])/2).round
image.shave("0x#{remove}")
elsif image[:width] > image[:height]
remove = ((image[:width] - image[:height])/2).round
image.shave("#{remove}x0")
end
image.resize("#{size}x#{size}")
image
end
end
end

Answer 1

Change your line
process :resize_to_fit => [250, 250]
To
process :resize_to_fill => [192, 135]
I asked a similar question about a month ago. Hope this helps! :)