module CarrierWave::Uploader::Processing::ClassMethods

Adds a processor callback which applies operations as a file is uploaded. The argument may be the name of any method of the uploader, expressed as a symbol, or a list of such methods, or a hash where the key is a method and the value is an array of arguments to call the method with

Parameters

args (*Symbol, Hash{Symbol => Array[]})

Examples

class MyUploader < CarrierWave::Uploader::Base

  process :sepiatone, :vignette
  process :scale => [200, 200]

  def sepiatone
    ...
  end

  def vignette
    ...
  end

  def scale(height, width)
    ...
  end
end

# File lib/carrierwave/uploader/processing.rb, line 56
def process(*args)
  args.each do |arg|
    if arg.is_a?(Hash)
      arg.each do |method, args|
        processors.push([method, args])
      end
    else
      processors.push([arg, []])
    end
  end
end

Lists processor callbacks declared

Returns

Array[Array[Symbol, Array]]

a list of processor callbacks which have been declared for this uploader

# File lib/carrierwave/uploader/processing.rb, line 22
def processors
  @processors ||= []
end