gistfile1.rb

class ImageUploader < CarrierWave::Uploader::Base
  # include MiniMagick support for resizing images
  include CarrierWave::MiniMagick
  
  # Choose what kind of storage to use for this uploader:
  # (handled in the initializer file)
  # storage :file
  # storage :fog

  # Override the directory where uploaded files will be stored.
  def store_dir
    "images/#{model.id}"
  end
  
  # Create different versions of your uploaded files:
  version :large_profile do
    # returns a 100x100 image
    process :resize_to_fill => [100, 100]
  end
  version :medium_profile do
    # returns a 50x50 image
    process :resize_to_fill => [50, 50]
  end
  version :small_profile do
    # returns a 35x35 image
    process :resize_to_fill => [35, 35]
  end

  # Set the filename for versioned files
  def filename
    "#{model.id}.jpg" if original_filename
  end

end