Module: CarrierWave::Uploader::Versions::ClassMethods

Defined in:
lib/carrierwave/uploader/versions.rb

Instance Method Summary collapse

Instance Method Details

#version(name, options = {}, &block) ⇒ Object

Adds a new version to this uploader

Parameters

name (#to_sym)

name of the version

options (Hash)

optional options hash

&block (Proc)

a block to eval on this version of the uploader

Examples

class MyUploader < CarrierWave::Uploader::Base

  version :thumb do
    process :scale => [200, 200]
  end

  version :preview, :if => :image? do
    process :scale => [200, 200]
  end

  version :square, :unless => :invalid_image_type? do
    process :scale => [100, 100]
  end

end



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# File 'lib/carrierwave/uploader/versions.rb', line 142

def version(name, options = {}, &block)
  name = name.to_sym
  versions[name] ||= Builder.new(name)
  versions[name].configure(options, &block)

  class_eval <<-RUBY, __FILE__, __LINE__ + 1
    def #{name}
      versions[:#{name}]
    end
  RUBY

  versions[name]
end